| 1 | !> @file boundary_conds.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of PALM. |
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| 4 | ! |
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| 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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| 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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| 17 | ! Copyright 1997-2017 Leibniz Universitaet Hannover |
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| 18 | !------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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| 22 | ! |
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| 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: boundary_conds.f90 2101 2017-01-05 16:42:31Z maronga $ |
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| 27 | ! |
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| 28 | ! 2000 2016-08-20 18:09:15Z knoop |
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| 29 | ! Forced header and separation lines into 80 columns |
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| 30 | ! |
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| 31 | ! 1992 2016-08-12 15:14:59Z suehring |
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| 32 | ! Adjustments for top boundary condition for passive scalar |
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| 33 | ! |
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| 34 | ! 1960 2016-07-12 16:34:24Z suehring |
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| 35 | ! Treat humidity and passive scalar separately |
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| 36 | ! |
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| 37 | ! 1823 2016-04-07 08:57:52Z hoffmann |
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| 38 | ! Initial version of purely vertical nesting introduced. |
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| 39 | ! |
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| 40 | ! 1822 2016-04-07 07:49:42Z hoffmann |
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| 41 | ! icloud_scheme removed. microphyisics_seifert added. |
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| 42 | ! |
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| 43 | ! 1764 2016-02-28 12:45:19Z raasch |
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| 44 | ! index bug for u_p at left outflow removed |
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| 45 | ! |
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| 46 | ! 1762 2016-02-25 12:31:13Z hellstea |
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| 47 | ! Introduction of nested domain feature |
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| 48 | ! |
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| 49 | ! 1742 2016-01-13 09:50:06Z raasch |
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| 50 | ! bugfix for outflow Neumann boundary conditions at bottom and top |
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| 51 | ! |
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| 52 | ! 1717 2015-11-11 15:09:47Z raasch |
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| 53 | ! Bugfix: index error in outflow conditions for left boundary |
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| 54 | ! |
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| 55 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 56 | ! Code annotations made doxygen readable |
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| 57 | ! |
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| 58 | ! 1410 2014-05-23 12:16:18Z suehring |
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| 59 | ! Bugfix: set dirichlet boundary condition for passive_scalar at model domain |
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| 60 | ! top |
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| 61 | ! |
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| 62 | ! 1399 2014-05-07 11:16:25Z heinze |
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| 63 | ! Bugfix: set inflow boundary conditions also if no humidity or passive_scalar |
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| 64 | ! is used. |
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| 65 | ! |
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| 66 | ! 1398 2014-05-07 11:15:00Z heinze |
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| 67 | ! Dirichlet-condition at the top for u and v changed to u_init and v_init also |
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| 68 | ! for large_scale_forcing |
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| 69 | ! |
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| 70 | ! 1380 2014-04-28 12:40:45Z heinze |
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| 71 | ! Adjust Dirichlet-condition at the top for pt in case of nudging |
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| 72 | ! |
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| 73 | ! 1361 2014-04-16 15:17:48Z hoffmann |
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| 74 | ! Bottom and top boundary conditions of rain water content (qr) and |
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| 75 | ! rain drop concentration (nr) changed to Dirichlet |
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| 76 | ! |
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| 77 | ! 1353 2014-04-08 15:21:23Z heinze |
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| 78 | ! REAL constants provided with KIND-attribute |
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| 79 | ! |
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| 80 | ! 1320 2014-03-20 08:40:49Z raasch |
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| 81 | ! ONLY-attribute added to USE-statements, |
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| 82 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 83 | ! kinds are defined in new module kinds, |
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| 84 | ! revision history before 2012 removed, |
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| 85 | ! comment fields (!:) to be used for variable explanations added to |
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| 86 | ! all variable declaration statements |
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| 87 | ! |
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| 88 | ! 1257 2013-11-08 15:18:40Z raasch |
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| 89 | ! loop independent clauses added |
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| 90 | ! |
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| 91 | ! 1241 2013-10-30 11:36:58Z heinze |
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| 92 | ! Adjust ug and vg at each timestep in case of large_scale_forcing |
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| 93 | ! |
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| 94 | ! 1159 2013-05-21 11:58:22Z fricke |
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| 95 | ! Bugfix: Neumann boundary conditions for the velocity components at the |
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| 96 | ! outflow are in fact radiation boundary conditions using the maximum phase |
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| 97 | ! velocity that ensures numerical stability (CFL-condition). |
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| 98 | ! Hence, logical operator use_cmax is now used instead of bc_lr_dirneu/_neudir. |
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| 99 | ! Bugfix: In case of use_cmax at the outflow, u, v, w are replaced by |
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| 100 | ! u_p, v_p, w_p |
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| 101 | ! |
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| 102 | ! 1115 2013-03-26 18:16:16Z hoffmann |
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| 103 | ! boundary conditions of two-moment cloud scheme are restricted to Neumann- |
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| 104 | ! boundary-conditions |
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| 105 | ! |
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| 106 | ! 1113 2013-03-10 02:48:14Z raasch |
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| 107 | ! GPU-porting |
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| 108 | ! dummy argument "range" removed |
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| 109 | ! Bugfix: wrong index in loops of radiation boundary condition |
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| 110 | ! |
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| 111 | ! 1053 2012-11-13 17:11:03Z hoffmann |
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| 112 | ! boundary conditions for the two new prognostic equations (nr, qr) of the |
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| 113 | ! two-moment cloud scheme |
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| 114 | ! |
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| 115 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 116 | ! code put under GPL (PALM 3.9) |
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| 117 | ! |
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| 118 | ! 996 2012-09-07 10:41:47Z raasch |
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| 119 | ! little reformatting |
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| 120 | ! |
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| 121 | ! 978 2012-08-09 08:28:32Z fricke |
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| 122 | ! Neumann boudnary conditions are added at the inflow boundary for the SGS-TKE. |
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| 123 | ! Outflow boundary conditions for the velocity components can be set to Neumann |
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| 124 | ! conditions or to radiation conditions with a horizontal averaged phase |
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| 125 | ! velocity. |
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| 126 | ! |
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| 127 | ! 875 2012-04-02 15:35:15Z gryschka |
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| 128 | ! Bugfix in case of dirichlet inflow bc at the right or north boundary |
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| 129 | ! |
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| 130 | ! Revision 1.1 1997/09/12 06:21:34 raasch |
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| 131 | ! Initial revision |
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| 132 | ! |
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| 133 | ! |
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| 134 | ! Description: |
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| 135 | ! ------------ |
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| 136 | !> Boundary conditions for the prognostic quantities. |
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| 137 | !> One additional bottom boundary condition is applied for the TKE (=(u*)**2) |
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| 138 | !> in prandtl_fluxes. The cyclic lateral boundary conditions are implicitly |
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| 139 | !> handled in routine exchange_horiz. Pressure boundary conditions are |
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| 140 | !> explicitly set in routines pres, poisfft, poismg and sor. |
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| 141 | !------------------------------------------------------------------------------! |
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| 142 | SUBROUTINE boundary_conds |
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| 143 | |
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| 144 | |
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| 145 | USE arrays_3d, & |
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| 146 | ONLY: c_u, c_u_m, c_u_m_l, c_v, c_v_m, c_v_m_l, c_w, c_w_m, c_w_m_l, & |
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| 147 | dzu, e_p, nr_p, pt, pt_p, q, q_p, qr_p, s, s_p, sa, sa_p, & |
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| 148 | u, ug, u_init, u_m_l, u_m_n, u_m_r, u_m_s, u_p, & |
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| 149 | v, vg, v_init, v_m_l, v_m_n, v_m_r, v_m_s, v_p, & |
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| 150 | w, w_p, w_m_l, w_m_n, w_m_r, w_m_s, pt_init |
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| 151 | |
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| 152 | USE control_parameters, & |
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| 153 | ONLY: bc_pt_t_val, bc_q_t_val, bc_s_t_val, constant_diffusion, & |
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| 154 | cloud_physics, dt_3d, humidity, & |
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| 155 | ibc_pt_b, ibc_pt_t, ibc_q_b, ibc_q_t, ibc_s_b, ibc_s_t, & |
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| 156 | ibc_sa_t, ibc_uv_b, ibc_uv_t, inflow_l, inflow_n, inflow_r, & |
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| 157 | inflow_s, intermediate_timestep_count, large_scale_forcing, & |
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| 158 | microphysics_seifert, nest_domain, nest_bound_l, nest_bound_s, & |
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| 159 | nudging, ocean, outflow_l, outflow_n, outflow_r, outflow_s, & |
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| 160 | passive_scalar, tsc, use_cmax |
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| 161 | |
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| 162 | USE grid_variables, & |
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| 163 | ONLY: ddx, ddy, dx, dy |
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| 164 | |
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| 165 | USE indices, & |
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| 166 | ONLY: nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, & |
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| 167 | nzb, nzb_s_inner, nzb_w_inner, nzt |
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| 168 | |
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| 169 | USE kinds |
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| 170 | |
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| 171 | USE pegrid |
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| 172 | |
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| 173 | USE pmc_interface, & |
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| 174 | ONLY : nesting_mode |
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| 175 | |
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| 176 | |
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| 177 | IMPLICIT NONE |
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| 178 | |
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| 179 | INTEGER(iwp) :: i !< |
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| 180 | INTEGER(iwp) :: j !< |
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| 181 | INTEGER(iwp) :: k !< |
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| 182 | |
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| 183 | REAL(wp) :: c_max !< |
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| 184 | REAL(wp) :: denom !< |
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| 185 | |
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| 186 | |
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| 187 | ! |
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| 188 | !-- Bottom boundary |
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| 189 | IF ( ibc_uv_b == 1 ) THEN |
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| 190 | !$acc kernels present( u_p, v_p ) |
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| 191 | u_p(nzb,:,:) = u_p(nzb+1,:,:) |
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| 192 | v_p(nzb,:,:) = v_p(nzb+1,:,:) |
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| 193 | !$acc end kernels |
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| 194 | ENDIF |
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| 195 | |
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| 196 | !$acc kernels present( nzb_w_inner, w_p ) |
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| 197 | DO i = nxlg, nxrg |
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| 198 | DO j = nysg, nyng |
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| 199 | w_p(nzb_w_inner(j,i),j,i) = 0.0_wp |
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| 200 | ENDDO |
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| 201 | ENDDO |
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| 202 | !$acc end kernels |
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| 203 | |
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| 204 | ! |
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| 205 | !-- Top boundary. A nested domain ( ibc_uv_t = 3 ) does not require settings. |
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| 206 | IF ( ibc_uv_t == 0 ) THEN |
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| 207 | !$acc kernels present( u_init, u_p, v_init, v_p ) |
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| 208 | u_p(nzt+1,:,:) = u_init(nzt+1) |
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| 209 | v_p(nzt+1,:,:) = v_init(nzt+1) |
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| 210 | !$acc end kernels |
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| 211 | ELSEIF ( ibc_uv_t == 1 ) THEN |
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| 212 | !$acc kernels present( u_p, v_p ) |
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| 213 | u_p(nzt+1,:,:) = u_p(nzt,:,:) |
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| 214 | v_p(nzt+1,:,:) = v_p(nzt,:,:) |
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| 215 | !$acc end kernels |
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| 216 | ENDIF |
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| 217 | |
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| 218 | IF ( .NOT. nest_domain ) THEN |
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| 219 | !$acc kernels present( w_p ) |
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| 220 | w_p(nzt:nzt+1,:,:) = 0.0_wp ! nzt is not a prognostic level (but cf. pres) |
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| 221 | !$acc end kernels |
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| 222 | ENDIF |
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| 223 | |
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| 224 | ! |
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| 225 | !-- Temperature at bottom boundary. |
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| 226 | !-- In case of coupled runs (ibc_pt_b = 2) the temperature is given by |
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| 227 | !-- the sea surface temperature of the coupled ocean model. |
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| 228 | IF ( ibc_pt_b == 0 ) THEN |
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| 229 | !$acc kernels present( nzb_s_inner, pt, pt_p ) |
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| 230 | !$acc loop independent |
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| 231 | DO i = nxlg, nxrg |
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| 232 | !$acc loop independent |
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| 233 | DO j = nysg, nyng |
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| 234 | pt_p(nzb_s_inner(j,i),j,i) = pt(nzb_s_inner(j,i),j,i) |
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| 235 | ENDDO |
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| 236 | ENDDO |
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| 237 | !$acc end kernels |
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| 238 | ELSEIF ( ibc_pt_b == 1 ) THEN |
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| 239 | !$acc kernels present( nzb_s_inner, pt_p ) |
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| 240 | !$acc loop independent |
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| 241 | DO i = nxlg, nxrg |
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| 242 | !$acc loop independent |
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| 243 | DO j = nysg, nyng |
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| 244 | pt_p(nzb_s_inner(j,i),j,i) = pt_p(nzb_s_inner(j,i)+1,j,i) |
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| 245 | ENDDO |
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| 246 | ENDDO |
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| 247 | !$acc end kernels |
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| 248 | ENDIF |
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| 249 | |
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| 250 | ! |
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| 251 | !-- Temperature at top boundary |
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| 252 | IF ( ibc_pt_t == 0 ) THEN |
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| 253 | !$acc kernels present( pt, pt_p ) |
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| 254 | pt_p(nzt+1,:,:) = pt(nzt+1,:,:) |
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| 255 | ! |
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| 256 | !-- In case of nudging adjust top boundary to pt which is |
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| 257 | !-- read in from NUDGING-DATA |
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| 258 | IF ( nudging ) THEN |
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| 259 | pt_p(nzt+1,:,:) = pt_init(nzt+1) |
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| 260 | ENDIF |
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| 261 | !$acc end kernels |
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| 262 | ELSEIF ( ibc_pt_t == 1 ) THEN |
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| 263 | !$acc kernels present( pt_p ) |
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| 264 | pt_p(nzt+1,:,:) = pt_p(nzt,:,:) |
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| 265 | !$acc end kernels |
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| 266 | ELSEIF ( ibc_pt_t == 2 ) THEN |
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| 267 | !$acc kernels present( dzu, pt_p ) |
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| 268 | pt_p(nzt+1,:,:) = pt_p(nzt,:,:) + bc_pt_t_val * dzu(nzt+1) |
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| 269 | !$acc end kernels |
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| 270 | ENDIF |
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| 271 | |
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| 272 | ! |
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| 273 | !-- Boundary conditions for TKE |
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| 274 | !-- Generally Neumann conditions with de/dz=0 are assumed |
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| 275 | IF ( .NOT. constant_diffusion ) THEN |
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| 276 | !$acc kernels present( e_p, nzb_s_inner ) |
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| 277 | !$acc loop independent |
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| 278 | DO i = nxlg, nxrg |
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| 279 | !$acc loop independent |
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| 280 | DO j = nysg, nyng |
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| 281 | e_p(nzb_s_inner(j,i),j,i) = e_p(nzb_s_inner(j,i)+1,j,i) |
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| 282 | ENDDO |
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| 283 | ENDDO |
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| 284 | IF ( .NOT. nest_domain ) THEN |
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| 285 | e_p(nzt+1,:,:) = e_p(nzt,:,:) |
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| 286 | ENDIF |
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| 287 | !$acc end kernels |
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| 288 | ENDIF |
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| 289 | |
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| 290 | ! |
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| 291 | !-- Boundary conditions for salinity |
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| 292 | IF ( ocean ) THEN |
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| 293 | ! |
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| 294 | !-- Bottom boundary: Neumann condition because salinity flux is always |
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| 295 | !-- given |
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| 296 | DO i = nxlg, nxrg |
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| 297 | DO j = nysg, nyng |
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| 298 | sa_p(nzb_s_inner(j,i),j,i) = sa_p(nzb_s_inner(j,i)+1,j,i) |
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| 299 | ENDDO |
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| 300 | ENDDO |
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| 301 | |
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| 302 | ! |
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| 303 | !-- Top boundary: Dirichlet or Neumann |
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| 304 | IF ( ibc_sa_t == 0 ) THEN |
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| 305 | sa_p(nzt+1,:,:) = sa(nzt+1,:,:) |
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| 306 | ELSEIF ( ibc_sa_t == 1 ) THEN |
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| 307 | sa_p(nzt+1,:,:) = sa_p(nzt,:,:) |
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| 308 | ENDIF |
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| 309 | |
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| 310 | ENDIF |
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| 311 | |
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| 312 | ! |
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| 313 | !-- Boundary conditions for total water content, |
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| 314 | !-- bottom and top boundary (see also temperature) |
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| 315 | IF ( humidity ) THEN |
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| 316 | ! |
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| 317 | !-- Surface conditions for constant_humidity_flux |
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| 318 | IF ( ibc_q_b == 0 ) THEN |
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| 319 | DO i = nxlg, nxrg |
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| 320 | DO j = nysg, nyng |
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| 321 | q_p(nzb_s_inner(j,i),j,i) = q(nzb_s_inner(j,i),j,i) |
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| 322 | ENDDO |
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| 323 | ENDDO |
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| 324 | ELSE |
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| 325 | DO i = nxlg, nxrg |
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| 326 | DO j = nysg, nyng |
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| 327 | q_p(nzb_s_inner(j,i),j,i) = q_p(nzb_s_inner(j,i)+1,j,i) |
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| 328 | ENDDO |
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| 329 | ENDDO |
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| 330 | ENDIF |
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| 331 | ! |
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| 332 | !-- Top boundary |
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| 333 | IF ( ibc_q_t == 0 ) THEN |
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| 334 | q_p(nzt+1,:,:) = q(nzt+1,:,:) |
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| 335 | ELSEIF ( ibc_q_t == 1 ) THEN |
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| 336 | q_p(nzt+1,:,:) = q_p(nzt,:,:) + bc_q_t_val * dzu(nzt+1) |
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| 337 | ENDIF |
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| 338 | |
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| 339 | IF ( cloud_physics .AND. microphysics_seifert ) THEN |
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| 340 | ! |
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| 341 | !-- Surface conditions rain water (Dirichlet) |
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| 342 | DO i = nxlg, nxrg |
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| 343 | DO j = nysg, nyng |
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| 344 | qr_p(nzb_s_inner(j,i),j,i) = 0.0_wp |
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| 345 | nr_p(nzb_s_inner(j,i),j,i) = 0.0_wp |
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| 346 | ENDDO |
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| 347 | ENDDO |
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| 348 | ! |
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| 349 | !-- Top boundary condition for rain water (Dirichlet) |
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| 350 | qr_p(nzt+1,:,:) = 0.0_wp |
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| 351 | nr_p(nzt+1,:,:) = 0.0_wp |
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| 352 | |
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| 353 | ENDIF |
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| 354 | ENDIF |
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| 355 | ! |
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| 356 | !-- Boundary conditions for scalar, |
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| 357 | !-- bottom and top boundary (see also temperature) |
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| 358 | IF ( passive_scalar ) THEN |
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| 359 | ! |
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| 360 | !-- Surface conditions for constant_humidity_flux |
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| 361 | IF ( ibc_s_b == 0 ) THEN |
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| 362 | DO i = nxlg, nxrg |
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| 363 | DO j = nysg, nyng |
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| 364 | s_p(nzb_s_inner(j,i),j,i) = s(nzb_s_inner(j,i),j,i) |
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| 365 | ENDDO |
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| 366 | ENDDO |
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| 367 | ELSE |
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| 368 | DO i = nxlg, nxrg |
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| 369 | DO j = nysg, nyng |
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| 370 | s_p(nzb_s_inner(j,i),j,i) = s_p(nzb_s_inner(j,i)+1,j,i) |
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| 371 | ENDDO |
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| 372 | ENDDO |
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| 373 | ENDIF |
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| 374 | ! |
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| 375 | !-- Top boundary condition |
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| 376 | IF ( ibc_s_t == 0 ) THEN |
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| 377 | s_p(nzt+1,:,:) = s(nzt+1,:,:) |
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| 378 | ELSEIF ( ibc_s_t == 1 ) THEN |
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| 379 | s_p(nzt+1,:,:) = s_p(nzt,:,:) |
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| 380 | ELSEIF ( ibc_s_t == 2 ) THEN |
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| 381 | s_p(nzt+1,:,:) = s_p(nzt,:,:) + bc_s_t_val * dzu(nzt+1) |
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| 382 | ENDIF |
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| 383 | |
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| 384 | ENDIF |
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| 385 | ! |
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| 386 | !-- In case of inflow or nest boundary at the south boundary the boundary for v |
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| 387 | !-- is at nys and in case of inflow or nest boundary at the left boundary the |
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| 388 | !-- boundary for u is at nxl. Since in prognostic_equations (cache optimized |
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| 389 | !-- version) these levels are handled as a prognostic level, boundary values |
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| 390 | !-- have to be restored here. |
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| 391 | !-- For the SGS-TKE, Neumann boundary conditions are used at the inflow. |
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| 392 | IF ( inflow_s ) THEN |
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| 393 | v_p(:,nys,:) = v_p(:,nys-1,:) |
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| 394 | IF ( .NOT. constant_diffusion ) e_p(:,nys-1,:) = e_p(:,nys,:) |
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| 395 | ELSEIF ( inflow_n ) THEN |
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| 396 | IF ( .NOT. constant_diffusion ) e_p(:,nyn+1,:) = e_p(:,nyn,:) |
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| 397 | ELSEIF ( inflow_l ) THEN |
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| 398 | u_p(:,:,nxl) = u_p(:,:,nxl-1) |
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| 399 | IF ( .NOT. constant_diffusion ) e_p(:,:,nxl-1) = e_p(:,:,nxl) |
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| 400 | ELSEIF ( inflow_r ) THEN |
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| 401 | IF ( .NOT. constant_diffusion ) e_p(:,:,nxr+1) = e_p(:,:,nxr) |
|---|
| 402 | ENDIF |
|---|
| 403 | |
|---|
| 404 | ! |
|---|
| 405 | !-- The same restoration for u at i=nxl and v at j=nys as above must be made |
|---|
| 406 | !-- in case of nest boundaries. This must not be done in case of vertical nesting |
|---|
| 407 | !-- mode as in that case the lateral boundaries are actually cyclic. |
|---|
| 408 | IF ( nesting_mode /= 'vertical' ) THEN |
|---|
| 409 | IF ( nest_bound_s ) THEN |
|---|
| 410 | v_p(:,nys,:) = v_p(:,nys-1,:) |
|---|
| 411 | ENDIF |
|---|
| 412 | IF ( nest_bound_l ) THEN |
|---|
| 413 | u_p(:,:,nxl) = u_p(:,:,nxl-1) |
|---|
| 414 | ENDIF |
|---|
| 415 | ENDIF |
|---|
| 416 | |
|---|
| 417 | ! |
|---|
| 418 | !-- Lateral boundary conditions for scalar quantities at the outflow |
|---|
| 419 | IF ( outflow_s ) THEN |
|---|
| 420 | pt_p(:,nys-1,:) = pt_p(:,nys,:) |
|---|
| 421 | IF ( .NOT. constant_diffusion ) e_p(:,nys-1,:) = e_p(:,nys,:) |
|---|
| 422 | IF ( humidity ) THEN |
|---|
| 423 | q_p(:,nys-1,:) = q_p(:,nys,:) |
|---|
| 424 | IF ( cloud_physics .AND. microphysics_seifert ) THEN |
|---|
| 425 | qr_p(:,nys-1,:) = qr_p(:,nys,:) |
|---|
| 426 | nr_p(:,nys-1,:) = nr_p(:,nys,:) |
|---|
| 427 | ENDIF |
|---|
| 428 | ENDIF |
|---|
| 429 | IF ( passive_scalar ) s_p(:,nys-1,:) = s_p(:,nys,:) |
|---|
| 430 | ELSEIF ( outflow_n ) THEN |
|---|
| 431 | pt_p(:,nyn+1,:) = pt_p(:,nyn,:) |
|---|
| 432 | IF ( .NOT. constant_diffusion ) e_p(:,nyn+1,:) = e_p(:,nyn,:) |
|---|
| 433 | IF ( humidity ) THEN |
|---|
| 434 | q_p(:,nyn+1,:) = q_p(:,nyn,:) |
|---|
| 435 | IF ( cloud_physics .AND. microphysics_seifert ) THEN |
|---|
| 436 | qr_p(:,nyn+1,:) = qr_p(:,nyn,:) |
|---|
| 437 | nr_p(:,nyn+1,:) = nr_p(:,nyn,:) |
|---|
| 438 | ENDIF |
|---|
| 439 | ENDIF |
|---|
| 440 | IF ( passive_scalar ) s_p(:,nyn+1,:) = s_p(:,nyn,:) |
|---|
| 441 | ELSEIF ( outflow_l ) THEN |
|---|
| 442 | pt_p(:,:,nxl-1) = pt_p(:,:,nxl) |
|---|
| 443 | IF ( .NOT. constant_diffusion ) e_p(:,:,nxl-1) = e_p(:,:,nxl) |
|---|
| 444 | IF ( humidity ) THEN |
|---|
| 445 | q_p(:,:,nxl-1) = q_p(:,:,nxl) |
|---|
| 446 | IF ( cloud_physics .AND. microphysics_seifert ) THEN |
|---|
| 447 | qr_p(:,:,nxl-1) = qr_p(:,:,nxl) |
|---|
| 448 | nr_p(:,:,nxl-1) = nr_p(:,:,nxl) |
|---|
| 449 | ENDIF |
|---|
| 450 | ENDIF |
|---|
| 451 | IF ( passive_scalar ) s_p(:,:,nxl-1) = s_p(:,:,nxl) |
|---|
| 452 | ELSEIF ( outflow_r ) THEN |
|---|
| 453 | pt_p(:,:,nxr+1) = pt_p(:,:,nxr) |
|---|
| 454 | IF ( .NOT. constant_diffusion ) e_p(:,:,nxr+1) = e_p(:,:,nxr) |
|---|
| 455 | IF ( humidity ) THEN |
|---|
| 456 | q_p(:,:,nxr+1) = q_p(:,:,nxr) |
|---|
| 457 | IF ( cloud_physics .AND. microphysics_seifert ) THEN |
|---|
| 458 | qr_p(:,:,nxr+1) = qr_p(:,:,nxr) |
|---|
| 459 | nr_p(:,:,nxr+1) = nr_p(:,:,nxr) |
|---|
| 460 | ENDIF |
|---|
| 461 | ENDIF |
|---|
| 462 | IF ( passive_scalar ) s_p(:,:,nxr+1) = s_p(:,:,nxr) |
|---|
| 463 | ENDIF |
|---|
| 464 | |
|---|
| 465 | ! |
|---|
| 466 | !-- Radiation boundary conditions for the velocities at the respective outflow. |
|---|
| 467 | !-- The phase velocity is either assumed to the maximum phase velocity that |
|---|
| 468 | !-- ensures numerical stability (CFL-condition) or calculated after |
|---|
| 469 | !-- Orlanski(1976) and averaged along the outflow boundary. |
|---|
| 470 | IF ( outflow_s ) THEN |
|---|
| 471 | |
|---|
| 472 | IF ( use_cmax ) THEN |
|---|
| 473 | u_p(:,-1,:) = u(:,0,:) |
|---|
| 474 | v_p(:,0,:) = v(:,1,:) |
|---|
| 475 | w_p(:,-1,:) = w(:,0,:) |
|---|
| 476 | ELSEIF ( .NOT. use_cmax ) THEN |
|---|
| 477 | |
|---|
| 478 | c_max = dy / dt_3d |
|---|
| 479 | |
|---|
| 480 | c_u_m_l = 0.0_wp |
|---|
| 481 | c_v_m_l = 0.0_wp |
|---|
| 482 | c_w_m_l = 0.0_wp |
|---|
| 483 | |
|---|
| 484 | c_u_m = 0.0_wp |
|---|
| 485 | c_v_m = 0.0_wp |
|---|
| 486 | c_w_m = 0.0_wp |
|---|
| 487 | |
|---|
| 488 | ! |
|---|
| 489 | !-- Calculate the phase speeds for u, v, and w, first local and then |
|---|
| 490 | !-- average along the outflow boundary. |
|---|
| 491 | DO k = nzb+1, nzt+1 |
|---|
| 492 | DO i = nxl, nxr |
|---|
| 493 | |
|---|
| 494 | denom = u_m_s(k,0,i) - u_m_s(k,1,i) |
|---|
| 495 | |
|---|
| 496 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 497 | c_u(k,i) = -c_max * ( u(k,0,i) - u_m_s(k,0,i) ) / ( denom * tsc(2) ) |
|---|
| 498 | IF ( c_u(k,i) < 0.0_wp ) THEN |
|---|
| 499 | c_u(k,i) = 0.0_wp |
|---|
| 500 | ELSEIF ( c_u(k,i) > c_max ) THEN |
|---|
| 501 | c_u(k,i) = c_max |
|---|
| 502 | ENDIF |
|---|
| 503 | ELSE |
|---|
| 504 | c_u(k,i) = c_max |
|---|
| 505 | ENDIF |
|---|
| 506 | |
|---|
| 507 | denom = v_m_s(k,1,i) - v_m_s(k,2,i) |
|---|
| 508 | |
|---|
| 509 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 510 | c_v(k,i) = -c_max * ( v(k,1,i) - v_m_s(k,1,i) ) / ( denom * tsc(2) ) |
|---|
| 511 | IF ( c_v(k,i) < 0.0_wp ) THEN |
|---|
| 512 | c_v(k,i) = 0.0_wp |
|---|
| 513 | ELSEIF ( c_v(k,i) > c_max ) THEN |
|---|
| 514 | c_v(k,i) = c_max |
|---|
| 515 | ENDIF |
|---|
| 516 | ELSE |
|---|
| 517 | c_v(k,i) = c_max |
|---|
| 518 | ENDIF |
|---|
| 519 | |
|---|
| 520 | denom = w_m_s(k,0,i) - w_m_s(k,1,i) |
|---|
| 521 | |
|---|
| 522 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 523 | c_w(k,i) = -c_max * ( w(k,0,i) - w_m_s(k,0,i) ) / ( denom * tsc(2) ) |
|---|
| 524 | IF ( c_w(k,i) < 0.0_wp ) THEN |
|---|
| 525 | c_w(k,i) = 0.0_wp |
|---|
| 526 | ELSEIF ( c_w(k,i) > c_max ) THEN |
|---|
| 527 | c_w(k,i) = c_max |
|---|
| 528 | ENDIF |
|---|
| 529 | ELSE |
|---|
| 530 | c_w(k,i) = c_max |
|---|
| 531 | ENDIF |
|---|
| 532 | |
|---|
| 533 | c_u_m_l(k) = c_u_m_l(k) + c_u(k,i) |
|---|
| 534 | c_v_m_l(k) = c_v_m_l(k) + c_v(k,i) |
|---|
| 535 | c_w_m_l(k) = c_w_m_l(k) + c_w(k,i) |
|---|
| 536 | |
|---|
| 537 | ENDDO |
|---|
| 538 | ENDDO |
|---|
| 539 | |
|---|
| 540 | #if defined( __parallel ) |
|---|
| 541 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr ) |
|---|
| 542 | CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 543 | MPI_SUM, comm1dx, ierr ) |
|---|
| 544 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr ) |
|---|
| 545 | CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 546 | MPI_SUM, comm1dx, ierr ) |
|---|
| 547 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr ) |
|---|
| 548 | CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 549 | MPI_SUM, comm1dx, ierr ) |
|---|
| 550 | #else |
|---|
| 551 | c_u_m = c_u_m_l |
|---|
| 552 | c_v_m = c_v_m_l |
|---|
| 553 | c_w_m = c_w_m_l |
|---|
| 554 | #endif |
|---|
| 555 | |
|---|
| 556 | c_u_m = c_u_m / (nx+1) |
|---|
| 557 | c_v_m = c_v_m / (nx+1) |
|---|
| 558 | c_w_m = c_w_m / (nx+1) |
|---|
| 559 | |
|---|
| 560 | ! |
|---|
| 561 | !-- Save old timelevels for the next timestep |
|---|
| 562 | IF ( intermediate_timestep_count == 1 ) THEN |
|---|
| 563 | u_m_s(:,:,:) = u(:,0:1,:) |
|---|
| 564 | v_m_s(:,:,:) = v(:,1:2,:) |
|---|
| 565 | w_m_s(:,:,:) = w(:,0:1,:) |
|---|
| 566 | ENDIF |
|---|
| 567 | |
|---|
| 568 | ! |
|---|
| 569 | !-- Calculate the new velocities |
|---|
| 570 | DO k = nzb+1, nzt+1 |
|---|
| 571 | DO i = nxlg, nxrg |
|---|
| 572 | u_p(k,-1,i) = u(k,-1,i) - dt_3d * tsc(2) * c_u_m(k) * & |
|---|
| 573 | ( u(k,-1,i) - u(k,0,i) ) * ddy |
|---|
| 574 | |
|---|
| 575 | v_p(k,0,i) = v(k,0,i) - dt_3d * tsc(2) * c_v_m(k) * & |
|---|
| 576 | ( v(k,0,i) - v(k,1,i) ) * ddy |
|---|
| 577 | |
|---|
| 578 | w_p(k,-1,i) = w(k,-1,i) - dt_3d * tsc(2) * c_w_m(k) * & |
|---|
| 579 | ( w(k,-1,i) - w(k,0,i) ) * ddy |
|---|
| 580 | ENDDO |
|---|
| 581 | ENDDO |
|---|
| 582 | |
|---|
| 583 | ! |
|---|
| 584 | !-- Bottom boundary at the outflow |
|---|
| 585 | IF ( ibc_uv_b == 0 ) THEN |
|---|
| 586 | u_p(nzb,-1,:) = 0.0_wp |
|---|
| 587 | v_p(nzb,0,:) = 0.0_wp |
|---|
| 588 | ELSE |
|---|
| 589 | u_p(nzb,-1,:) = u_p(nzb+1,-1,:) |
|---|
| 590 | v_p(nzb,0,:) = v_p(nzb+1,0,:) |
|---|
| 591 | ENDIF |
|---|
| 592 | w_p(nzb,-1,:) = 0.0_wp |
|---|
| 593 | |
|---|
| 594 | ! |
|---|
| 595 | !-- Top boundary at the outflow |
|---|
| 596 | IF ( ibc_uv_t == 0 ) THEN |
|---|
| 597 | u_p(nzt+1,-1,:) = u_init(nzt+1) |
|---|
| 598 | v_p(nzt+1,0,:) = v_init(nzt+1) |
|---|
| 599 | ELSE |
|---|
| 600 | u_p(nzt+1,-1,:) = u_p(nzt,-1,:) |
|---|
| 601 | v_p(nzt+1,0,:) = v_p(nzt,0,:) |
|---|
| 602 | ENDIF |
|---|
| 603 | w_p(nzt:nzt+1,-1,:) = 0.0_wp |
|---|
| 604 | |
|---|
| 605 | ENDIF |
|---|
| 606 | |
|---|
| 607 | ENDIF |
|---|
| 608 | |
|---|
| 609 | IF ( outflow_n ) THEN |
|---|
| 610 | |
|---|
| 611 | IF ( use_cmax ) THEN |
|---|
| 612 | u_p(:,ny+1,:) = u(:,ny,:) |
|---|
| 613 | v_p(:,ny+1,:) = v(:,ny,:) |
|---|
| 614 | w_p(:,ny+1,:) = w(:,ny,:) |
|---|
| 615 | ELSEIF ( .NOT. use_cmax ) THEN |
|---|
| 616 | |
|---|
| 617 | c_max = dy / dt_3d |
|---|
| 618 | |
|---|
| 619 | c_u_m_l = 0.0_wp |
|---|
| 620 | c_v_m_l = 0.0_wp |
|---|
| 621 | c_w_m_l = 0.0_wp |
|---|
| 622 | |
|---|
| 623 | c_u_m = 0.0_wp |
|---|
| 624 | c_v_m = 0.0_wp |
|---|
| 625 | c_w_m = 0.0_wp |
|---|
| 626 | |
|---|
| 627 | ! |
|---|
| 628 | !-- Calculate the phase speeds for u, v, and w, first local and then |
|---|
| 629 | !-- average along the outflow boundary. |
|---|
| 630 | DO k = nzb+1, nzt+1 |
|---|
| 631 | DO i = nxl, nxr |
|---|
| 632 | |
|---|
| 633 | denom = u_m_n(k,ny,i) - u_m_n(k,ny-1,i) |
|---|
| 634 | |
|---|
| 635 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 636 | c_u(k,i) = -c_max * ( u(k,ny,i) - u_m_n(k,ny,i) ) / ( denom * tsc(2) ) |
|---|
| 637 | IF ( c_u(k,i) < 0.0_wp ) THEN |
|---|
| 638 | c_u(k,i) = 0.0_wp |
|---|
| 639 | ELSEIF ( c_u(k,i) > c_max ) THEN |
|---|
| 640 | c_u(k,i) = c_max |
|---|
| 641 | ENDIF |
|---|
| 642 | ELSE |
|---|
| 643 | c_u(k,i) = c_max |
|---|
| 644 | ENDIF |
|---|
| 645 | |
|---|
| 646 | denom = v_m_n(k,ny,i) - v_m_n(k,ny-1,i) |
|---|
| 647 | |
|---|
| 648 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 649 | c_v(k,i) = -c_max * ( v(k,ny,i) - v_m_n(k,ny,i) ) / ( denom * tsc(2) ) |
|---|
| 650 | IF ( c_v(k,i) < 0.0_wp ) THEN |
|---|
| 651 | c_v(k,i) = 0.0_wp |
|---|
| 652 | ELSEIF ( c_v(k,i) > c_max ) THEN |
|---|
| 653 | c_v(k,i) = c_max |
|---|
| 654 | ENDIF |
|---|
| 655 | ELSE |
|---|
| 656 | c_v(k,i) = c_max |
|---|
| 657 | ENDIF |
|---|
| 658 | |
|---|
| 659 | denom = w_m_n(k,ny,i) - w_m_n(k,ny-1,i) |
|---|
| 660 | |
|---|
| 661 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 662 | c_w(k,i) = -c_max * ( w(k,ny,i) - w_m_n(k,ny,i) ) / ( denom * tsc(2) ) |
|---|
| 663 | IF ( c_w(k,i) < 0.0_wp ) THEN |
|---|
| 664 | c_w(k,i) = 0.0_wp |
|---|
| 665 | ELSEIF ( c_w(k,i) > c_max ) THEN |
|---|
| 666 | c_w(k,i) = c_max |
|---|
| 667 | ENDIF |
|---|
| 668 | ELSE |
|---|
| 669 | c_w(k,i) = c_max |
|---|
| 670 | ENDIF |
|---|
| 671 | |
|---|
| 672 | c_u_m_l(k) = c_u_m_l(k) + c_u(k,i) |
|---|
| 673 | c_v_m_l(k) = c_v_m_l(k) + c_v(k,i) |
|---|
| 674 | c_w_m_l(k) = c_w_m_l(k) + c_w(k,i) |
|---|
| 675 | |
|---|
| 676 | ENDDO |
|---|
| 677 | ENDDO |
|---|
| 678 | |
|---|
| 679 | #if defined( __parallel ) |
|---|
| 680 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr ) |
|---|
| 681 | CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 682 | MPI_SUM, comm1dx, ierr ) |
|---|
| 683 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr ) |
|---|
| 684 | CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 685 | MPI_SUM, comm1dx, ierr ) |
|---|
| 686 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dx, ierr ) |
|---|
| 687 | CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 688 | MPI_SUM, comm1dx, ierr ) |
|---|
| 689 | #else |
|---|
| 690 | c_u_m = c_u_m_l |
|---|
| 691 | c_v_m = c_v_m_l |
|---|
| 692 | c_w_m = c_w_m_l |
|---|
| 693 | #endif |
|---|
| 694 | |
|---|
| 695 | c_u_m = c_u_m / (nx+1) |
|---|
| 696 | c_v_m = c_v_m / (nx+1) |
|---|
| 697 | c_w_m = c_w_m / (nx+1) |
|---|
| 698 | |
|---|
| 699 | ! |
|---|
| 700 | !-- Save old timelevels for the next timestep |
|---|
| 701 | IF ( intermediate_timestep_count == 1 ) THEN |
|---|
| 702 | u_m_n(:,:,:) = u(:,ny-1:ny,:) |
|---|
| 703 | v_m_n(:,:,:) = v(:,ny-1:ny,:) |
|---|
| 704 | w_m_n(:,:,:) = w(:,ny-1:ny,:) |
|---|
| 705 | ENDIF |
|---|
| 706 | |
|---|
| 707 | ! |
|---|
| 708 | !-- Calculate the new velocities |
|---|
| 709 | DO k = nzb+1, nzt+1 |
|---|
| 710 | DO i = nxlg, nxrg |
|---|
| 711 | u_p(k,ny+1,i) = u(k,ny+1,i) - dt_3d * tsc(2) * c_u_m(k) * & |
|---|
| 712 | ( u(k,ny+1,i) - u(k,ny,i) ) * ddy |
|---|
| 713 | |
|---|
| 714 | v_p(k,ny+1,i) = v(k,ny+1,i) - dt_3d * tsc(2) * c_v_m(k) * & |
|---|
| 715 | ( v(k,ny+1,i) - v(k,ny,i) ) * ddy |
|---|
| 716 | |
|---|
| 717 | w_p(k,ny+1,i) = w(k,ny+1,i) - dt_3d * tsc(2) * c_w_m(k) * & |
|---|
| 718 | ( w(k,ny+1,i) - w(k,ny,i) ) * ddy |
|---|
| 719 | ENDDO |
|---|
| 720 | ENDDO |
|---|
| 721 | |
|---|
| 722 | ! |
|---|
| 723 | !-- Bottom boundary at the outflow |
|---|
| 724 | IF ( ibc_uv_b == 0 ) THEN |
|---|
| 725 | u_p(nzb,ny+1,:) = 0.0_wp |
|---|
| 726 | v_p(nzb,ny+1,:) = 0.0_wp |
|---|
| 727 | ELSE |
|---|
| 728 | u_p(nzb,ny+1,:) = u_p(nzb+1,ny+1,:) |
|---|
| 729 | v_p(nzb,ny+1,:) = v_p(nzb+1,ny+1,:) |
|---|
| 730 | ENDIF |
|---|
| 731 | w_p(nzb,ny+1,:) = 0.0_wp |
|---|
| 732 | |
|---|
| 733 | ! |
|---|
| 734 | !-- Top boundary at the outflow |
|---|
| 735 | IF ( ibc_uv_t == 0 ) THEN |
|---|
| 736 | u_p(nzt+1,ny+1,:) = u_init(nzt+1) |
|---|
| 737 | v_p(nzt+1,ny+1,:) = v_init(nzt+1) |
|---|
| 738 | ELSE |
|---|
| 739 | u_p(nzt+1,ny+1,:) = u_p(nzt,nyn+1,:) |
|---|
| 740 | v_p(nzt+1,ny+1,:) = v_p(nzt,nyn+1,:) |
|---|
| 741 | ENDIF |
|---|
| 742 | w_p(nzt:nzt+1,ny+1,:) = 0.0_wp |
|---|
| 743 | |
|---|
| 744 | ENDIF |
|---|
| 745 | |
|---|
| 746 | ENDIF |
|---|
| 747 | |
|---|
| 748 | IF ( outflow_l ) THEN |
|---|
| 749 | |
|---|
| 750 | IF ( use_cmax ) THEN |
|---|
| 751 | u_p(:,:,0) = u(:,:,1) |
|---|
| 752 | v_p(:,:,-1) = v(:,:,0) |
|---|
| 753 | w_p(:,:,-1) = w(:,:,0) |
|---|
| 754 | ELSEIF ( .NOT. use_cmax ) THEN |
|---|
| 755 | |
|---|
| 756 | c_max = dx / dt_3d |
|---|
| 757 | |
|---|
| 758 | c_u_m_l = 0.0_wp |
|---|
| 759 | c_v_m_l = 0.0_wp |
|---|
| 760 | c_w_m_l = 0.0_wp |
|---|
| 761 | |
|---|
| 762 | c_u_m = 0.0_wp |
|---|
| 763 | c_v_m = 0.0_wp |
|---|
| 764 | c_w_m = 0.0_wp |
|---|
| 765 | |
|---|
| 766 | ! |
|---|
| 767 | !-- Calculate the phase speeds for u, v, and w, first local and then |
|---|
| 768 | !-- average along the outflow boundary. |
|---|
| 769 | DO k = nzb+1, nzt+1 |
|---|
| 770 | DO j = nys, nyn |
|---|
| 771 | |
|---|
| 772 | denom = u_m_l(k,j,1) - u_m_l(k,j,2) |
|---|
| 773 | |
|---|
| 774 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 775 | c_u(k,j) = -c_max * ( u(k,j,1) - u_m_l(k,j,1) ) / ( denom * tsc(2) ) |
|---|
| 776 | IF ( c_u(k,j) < 0.0_wp ) THEN |
|---|
| 777 | c_u(k,j) = 0.0_wp |
|---|
| 778 | ELSEIF ( c_u(k,j) > c_max ) THEN |
|---|
| 779 | c_u(k,j) = c_max |
|---|
| 780 | ENDIF |
|---|
| 781 | ELSE |
|---|
| 782 | c_u(k,j) = c_max |
|---|
| 783 | ENDIF |
|---|
| 784 | |
|---|
| 785 | denom = v_m_l(k,j,0) - v_m_l(k,j,1) |
|---|
| 786 | |
|---|
| 787 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 788 | c_v(k,j) = -c_max * ( v(k,j,0) - v_m_l(k,j,0) ) / ( denom * tsc(2) ) |
|---|
| 789 | IF ( c_v(k,j) < 0.0_wp ) THEN |
|---|
| 790 | c_v(k,j) = 0.0_wp |
|---|
| 791 | ELSEIF ( c_v(k,j) > c_max ) THEN |
|---|
| 792 | c_v(k,j) = c_max |
|---|
| 793 | ENDIF |
|---|
| 794 | ELSE |
|---|
| 795 | c_v(k,j) = c_max |
|---|
| 796 | ENDIF |
|---|
| 797 | |
|---|
| 798 | denom = w_m_l(k,j,0) - w_m_l(k,j,1) |
|---|
| 799 | |
|---|
| 800 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 801 | c_w(k,j) = -c_max * ( w(k,j,0) - w_m_l(k,j,0) ) / ( denom * tsc(2) ) |
|---|
| 802 | IF ( c_w(k,j) < 0.0_wp ) THEN |
|---|
| 803 | c_w(k,j) = 0.0_wp |
|---|
| 804 | ELSEIF ( c_w(k,j) > c_max ) THEN |
|---|
| 805 | c_w(k,j) = c_max |
|---|
| 806 | ENDIF |
|---|
| 807 | ELSE |
|---|
| 808 | c_w(k,j) = c_max |
|---|
| 809 | ENDIF |
|---|
| 810 | |
|---|
| 811 | c_u_m_l(k) = c_u_m_l(k) + c_u(k,j) |
|---|
| 812 | c_v_m_l(k) = c_v_m_l(k) + c_v(k,j) |
|---|
| 813 | c_w_m_l(k) = c_w_m_l(k) + c_w(k,j) |
|---|
| 814 | |
|---|
| 815 | ENDDO |
|---|
| 816 | ENDDO |
|---|
| 817 | |
|---|
| 818 | #if defined( __parallel ) |
|---|
| 819 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr ) |
|---|
| 820 | CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 821 | MPI_SUM, comm1dy, ierr ) |
|---|
| 822 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr ) |
|---|
| 823 | CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 824 | MPI_SUM, comm1dy, ierr ) |
|---|
| 825 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr ) |
|---|
| 826 | CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 827 | MPI_SUM, comm1dy, ierr ) |
|---|
| 828 | #else |
|---|
| 829 | c_u_m = c_u_m_l |
|---|
| 830 | c_v_m = c_v_m_l |
|---|
| 831 | c_w_m = c_w_m_l |
|---|
| 832 | #endif |
|---|
| 833 | |
|---|
| 834 | c_u_m = c_u_m / (ny+1) |
|---|
| 835 | c_v_m = c_v_m / (ny+1) |
|---|
| 836 | c_w_m = c_w_m / (ny+1) |
|---|
| 837 | |
|---|
| 838 | ! |
|---|
| 839 | !-- Save old timelevels for the next timestep |
|---|
| 840 | IF ( intermediate_timestep_count == 1 ) THEN |
|---|
| 841 | u_m_l(:,:,:) = u(:,:,1:2) |
|---|
| 842 | v_m_l(:,:,:) = v(:,:,0:1) |
|---|
| 843 | w_m_l(:,:,:) = w(:,:,0:1) |
|---|
| 844 | ENDIF |
|---|
| 845 | |
|---|
| 846 | ! |
|---|
| 847 | !-- Calculate the new velocities |
|---|
| 848 | DO k = nzb+1, nzt+1 |
|---|
| 849 | DO j = nysg, nyng |
|---|
| 850 | u_p(k,j,0) = u(k,j,0) - dt_3d * tsc(2) * c_u_m(k) * & |
|---|
| 851 | ( u(k,j,0) - u(k,j,1) ) * ddx |
|---|
| 852 | |
|---|
| 853 | v_p(k,j,-1) = v(k,j,-1) - dt_3d * tsc(2) * c_v_m(k) * & |
|---|
| 854 | ( v(k,j,-1) - v(k,j,0) ) * ddx |
|---|
| 855 | |
|---|
| 856 | w_p(k,j,-1) = w(k,j,-1) - dt_3d * tsc(2) * c_w_m(k) * & |
|---|
| 857 | ( w(k,j,-1) - w(k,j,0) ) * ddx |
|---|
| 858 | ENDDO |
|---|
| 859 | ENDDO |
|---|
| 860 | |
|---|
| 861 | ! |
|---|
| 862 | !-- Bottom boundary at the outflow |
|---|
| 863 | IF ( ibc_uv_b == 0 ) THEN |
|---|
| 864 | u_p(nzb,:,0) = 0.0_wp |
|---|
| 865 | v_p(nzb,:,-1) = 0.0_wp |
|---|
| 866 | ELSE |
|---|
| 867 | u_p(nzb,:,0) = u_p(nzb+1,:,0) |
|---|
| 868 | v_p(nzb,:,-1) = v_p(nzb+1,:,-1) |
|---|
| 869 | ENDIF |
|---|
| 870 | w_p(nzb,:,-1) = 0.0_wp |
|---|
| 871 | |
|---|
| 872 | ! |
|---|
| 873 | !-- Top boundary at the outflow |
|---|
| 874 | IF ( ibc_uv_t == 0 ) THEN |
|---|
| 875 | u_p(nzt+1,:,0) = u_init(nzt+1) |
|---|
| 876 | v_p(nzt+1,:,-1) = v_init(nzt+1) |
|---|
| 877 | ELSE |
|---|
| 878 | u_p(nzt+1,:,0) = u_p(nzt,:,0) |
|---|
| 879 | v_p(nzt+1,:,-1) = v_p(nzt,:,-1) |
|---|
| 880 | ENDIF |
|---|
| 881 | w_p(nzt:nzt+1,:,-1) = 0.0_wp |
|---|
| 882 | |
|---|
| 883 | ENDIF |
|---|
| 884 | |
|---|
| 885 | ENDIF |
|---|
| 886 | |
|---|
| 887 | IF ( outflow_r ) THEN |
|---|
| 888 | |
|---|
| 889 | IF ( use_cmax ) THEN |
|---|
| 890 | u_p(:,:,nx+1) = u(:,:,nx) |
|---|
| 891 | v_p(:,:,nx+1) = v(:,:,nx) |
|---|
| 892 | w_p(:,:,nx+1) = w(:,:,nx) |
|---|
| 893 | ELSEIF ( .NOT. use_cmax ) THEN |
|---|
| 894 | |
|---|
| 895 | c_max = dx / dt_3d |
|---|
| 896 | |
|---|
| 897 | c_u_m_l = 0.0_wp |
|---|
| 898 | c_v_m_l = 0.0_wp |
|---|
| 899 | c_w_m_l = 0.0_wp |
|---|
| 900 | |
|---|
| 901 | c_u_m = 0.0_wp |
|---|
| 902 | c_v_m = 0.0_wp |
|---|
| 903 | c_w_m = 0.0_wp |
|---|
| 904 | |
|---|
| 905 | ! |
|---|
| 906 | !-- Calculate the phase speeds for u, v, and w, first local and then |
|---|
| 907 | !-- average along the outflow boundary. |
|---|
| 908 | DO k = nzb+1, nzt+1 |
|---|
| 909 | DO j = nys, nyn |
|---|
| 910 | |
|---|
| 911 | denom = u_m_r(k,j,nx) - u_m_r(k,j,nx-1) |
|---|
| 912 | |
|---|
| 913 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 914 | c_u(k,j) = -c_max * ( u(k,j,nx) - u_m_r(k,j,nx) ) / ( denom * tsc(2) ) |
|---|
| 915 | IF ( c_u(k,j) < 0.0_wp ) THEN |
|---|
| 916 | c_u(k,j) = 0.0_wp |
|---|
| 917 | ELSEIF ( c_u(k,j) > c_max ) THEN |
|---|
| 918 | c_u(k,j) = c_max |
|---|
| 919 | ENDIF |
|---|
| 920 | ELSE |
|---|
| 921 | c_u(k,j) = c_max |
|---|
| 922 | ENDIF |
|---|
| 923 | |
|---|
| 924 | denom = v_m_r(k,j,nx) - v_m_r(k,j,nx-1) |
|---|
| 925 | |
|---|
| 926 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 927 | c_v(k,j) = -c_max * ( v(k,j,nx) - v_m_r(k,j,nx) ) / ( denom * tsc(2) ) |
|---|
| 928 | IF ( c_v(k,j) < 0.0_wp ) THEN |
|---|
| 929 | c_v(k,j) = 0.0_wp |
|---|
| 930 | ELSEIF ( c_v(k,j) > c_max ) THEN |
|---|
| 931 | c_v(k,j) = c_max |
|---|
| 932 | ENDIF |
|---|
| 933 | ELSE |
|---|
| 934 | c_v(k,j) = c_max |
|---|
| 935 | ENDIF |
|---|
| 936 | |
|---|
| 937 | denom = w_m_r(k,j,nx) - w_m_r(k,j,nx-1) |
|---|
| 938 | |
|---|
| 939 | IF ( denom /= 0.0_wp ) THEN |
|---|
| 940 | c_w(k,j) = -c_max * ( w(k,j,nx) - w_m_r(k,j,nx) ) / ( denom * tsc(2) ) |
|---|
| 941 | IF ( c_w(k,j) < 0.0_wp ) THEN |
|---|
| 942 | c_w(k,j) = 0.0_wp |
|---|
| 943 | ELSEIF ( c_w(k,j) > c_max ) THEN |
|---|
| 944 | c_w(k,j) = c_max |
|---|
| 945 | ENDIF |
|---|
| 946 | ELSE |
|---|
| 947 | c_w(k,j) = c_max |
|---|
| 948 | ENDIF |
|---|
| 949 | |
|---|
| 950 | c_u_m_l(k) = c_u_m_l(k) + c_u(k,j) |
|---|
| 951 | c_v_m_l(k) = c_v_m_l(k) + c_v(k,j) |
|---|
| 952 | c_w_m_l(k) = c_w_m_l(k) + c_w(k,j) |
|---|
| 953 | |
|---|
| 954 | ENDDO |
|---|
| 955 | ENDDO |
|---|
| 956 | |
|---|
| 957 | #if defined( __parallel ) |
|---|
| 958 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr ) |
|---|
| 959 | CALL MPI_ALLREDUCE( c_u_m_l(nzb+1), c_u_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 960 | MPI_SUM, comm1dy, ierr ) |
|---|
| 961 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr ) |
|---|
| 962 | CALL MPI_ALLREDUCE( c_v_m_l(nzb+1), c_v_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 963 | MPI_SUM, comm1dy, ierr ) |
|---|
| 964 | IF ( collective_wait ) CALL MPI_BARRIER( comm1dy, ierr ) |
|---|
| 965 | CALL MPI_ALLREDUCE( c_w_m_l(nzb+1), c_w_m(nzb+1), nzt-nzb, MPI_REAL, & |
|---|
| 966 | MPI_SUM, comm1dy, ierr ) |
|---|
| 967 | #else |
|---|
| 968 | c_u_m = c_u_m_l |
|---|
| 969 | c_v_m = c_v_m_l |
|---|
| 970 | c_w_m = c_w_m_l |
|---|
| 971 | #endif |
|---|
| 972 | |
|---|
| 973 | c_u_m = c_u_m / (ny+1) |
|---|
| 974 | c_v_m = c_v_m / (ny+1) |
|---|
| 975 | c_w_m = c_w_m / (ny+1) |
|---|
| 976 | |
|---|
| 977 | ! |
|---|
| 978 | !-- Save old timelevels for the next timestep |
|---|
| 979 | IF ( intermediate_timestep_count == 1 ) THEN |
|---|
| 980 | u_m_r(:,:,:) = u(:,:,nx-1:nx) |
|---|
| 981 | v_m_r(:,:,:) = v(:,:,nx-1:nx) |
|---|
| 982 | w_m_r(:,:,:) = w(:,:,nx-1:nx) |
|---|
| 983 | ENDIF |
|---|
| 984 | |
|---|
| 985 | ! |
|---|
| 986 | !-- Calculate the new velocities |
|---|
| 987 | DO k = nzb+1, nzt+1 |
|---|
| 988 | DO j = nysg, nyng |
|---|
| 989 | u_p(k,j,nx+1) = u(k,j,nx+1) - dt_3d * tsc(2) * c_u_m(k) * & |
|---|
| 990 | ( u(k,j,nx+1) - u(k,j,nx) ) * ddx |
|---|
| 991 | |
|---|
| 992 | v_p(k,j,nx+1) = v(k,j,nx+1) - dt_3d * tsc(2) * c_v_m(k) * & |
|---|
| 993 | ( v(k,j,nx+1) - v(k,j,nx) ) * ddx |
|---|
| 994 | |
|---|
| 995 | w_p(k,j,nx+1) = w(k,j,nx+1) - dt_3d * tsc(2) * c_w_m(k) * & |
|---|
| 996 | ( w(k,j,nx+1) - w(k,j,nx) ) * ddx |
|---|
| 997 | ENDDO |
|---|
| 998 | ENDDO |
|---|
| 999 | |
|---|
| 1000 | ! |
|---|
| 1001 | !-- Bottom boundary at the outflow |
|---|
| 1002 | IF ( ibc_uv_b == 0 ) THEN |
|---|
| 1003 | u_p(nzb,:,nx+1) = 0.0_wp |
|---|
| 1004 | v_p(nzb,:,nx+1) = 0.0_wp |
|---|
| 1005 | ELSE |
|---|
| 1006 | u_p(nzb,:,nx+1) = u_p(nzb+1,:,nx+1) |
|---|
| 1007 | v_p(nzb,:,nx+1) = v_p(nzb+1,:,nx+1) |
|---|
| 1008 | ENDIF |
|---|
| 1009 | w_p(nzb,:,nx+1) = 0.0_wp |
|---|
| 1010 | |
|---|
| 1011 | ! |
|---|
| 1012 | !-- Top boundary at the outflow |
|---|
| 1013 | IF ( ibc_uv_t == 0 ) THEN |
|---|
| 1014 | u_p(nzt+1,:,nx+1) = u_init(nzt+1) |
|---|
| 1015 | v_p(nzt+1,:,nx+1) = v_init(nzt+1) |
|---|
| 1016 | ELSE |
|---|
| 1017 | u_p(nzt+1,:,nx+1) = u_p(nzt,:,nx+1) |
|---|
| 1018 | v_p(nzt+1,:,nx+1) = v_p(nzt,:,nx+1) |
|---|
| 1019 | ENDIF |
|---|
| 1020 | w_p(nzt:nzt+1,:,nx+1) = 0.0_wp |
|---|
| 1021 | |
|---|
| 1022 | ENDIF |
|---|
| 1023 | |
|---|
| 1024 | ENDIF |
|---|
| 1025 | |
|---|
| 1026 | END SUBROUTINE boundary_conds |
|---|
