1 | SUBROUTINE pres |
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2 | |
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3 | !------------------------------------------------------------------------------! |
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4 | ! Actual revisions: |
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5 | ! ----------------- |
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6 | ! |
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7 | ! |
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8 | ! Former revisions: |
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9 | ! ----------------- |
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10 | ! $Id: pres.f90 77 2007-03-29 04:26:56Z raasch $ |
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11 | ! |
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12 | ! 75 2007-03-22 09:54:05Z raasch |
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13 | ! Volume flow control for non-cyclic boundary conditions added (currently only |
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14 | ! for the north boundary!!), 2nd+3rd argument removed from exchange horiz, |
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15 | ! mean vertical velocity is removed in case of Neumann boundary conditions |
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16 | ! both at the bottom and the top |
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17 | ! |
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18 | ! RCS Log replace by Id keyword, revision history cleaned up |
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19 | ! |
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20 | ! Revision 1.25 2006/04/26 13:26:12 raasch |
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21 | ! OpenMP optimization (+localsum, threadsum) |
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22 | ! |
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23 | ! Revision 1.1 1997/07/24 11:24:44 raasch |
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24 | ! Initial revision |
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25 | ! |
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26 | ! |
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27 | ! Description: |
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28 | ! ------------ |
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29 | ! Compute the divergence of the provisional velocity field. Solve the Poisson |
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30 | ! equation for the perturbation pressure. Compute the final velocities using |
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31 | ! this perturbation pressure. Compute the remaining divergence. |
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32 | !------------------------------------------------------------------------------! |
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33 | |
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34 | USE arrays_3d |
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35 | USE constants |
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36 | USE control_parameters |
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37 | USE cpulog |
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38 | USE grid_variables |
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39 | USE indices |
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40 | USE interfaces |
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41 | USE pegrid |
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42 | USE poisfft_mod |
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43 | USE poisfft_hybrid_mod |
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44 | USE statistics |
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45 | |
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46 | IMPLICIT NONE |
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47 | |
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48 | INTEGER :: i, j, k, sr |
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49 | |
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50 | REAL :: localsum, threadsum |
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51 | |
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52 | REAL, DIMENSION(1:2) :: volume_flow_l, volume_flow_offset |
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53 | REAL, DIMENSION(1:nzt) :: w_l, w_l_l |
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54 | |
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55 | |
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56 | CALL cpu_log( log_point(8), 'pres', 'start' ) |
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57 | |
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58 | ! |
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59 | !-- Multigrid method needs additional grid points for the divergence array |
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60 | IF ( psolver == 'multigrid' ) THEN |
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61 | DEALLOCATE( d ) |
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62 | ALLOCATE( d(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) ) |
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63 | ENDIF |
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64 | |
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65 | ! |
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66 | !-- Conserve the volume flow at the outflow in case of non-cyclic lateral |
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67 | !-- boundary conditions |
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68 | IF ( conserve_volume_flow .AND. bc_ns == 'radiation/dirichlet') THEN |
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69 | |
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70 | volume_flow(2) = 0.0 |
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71 | volume_flow_l(2) = 0.0 |
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72 | |
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73 | IF ( nyn == ny ) THEN |
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74 | j = ny+1 |
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75 | DO i = nxl, nxr |
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76 | ! |
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77 | !-- Sum up the volume flow through the north boundary |
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78 | DO k = nzb_2d(j,i) + 1, nzt |
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79 | volume_flow_l(2) = volume_flow_l(2) + v(k,j,i) * dzu(k) |
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80 | ENDDO |
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81 | ENDDO |
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82 | ENDIF |
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83 | #if defined( __parallel ) |
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84 | CALL MPI_ALLREDUCE( volume_flow_l(2), volume_flow(2), 1, MPI_REAL, & |
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85 | MPI_SUM, comm1dx, ierr ) |
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86 | #else |
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87 | volume_flow = volume_flow_l |
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88 | #endif |
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89 | volume_flow_offset(2) = ( volume_flow_initial(2) - volume_flow(2) ) & |
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90 | / volume_flow_area(2) |
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91 | |
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92 | IF ( outflow_n ) THEN |
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93 | j = nyn+1 |
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94 | DO i = nxl, nxr |
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95 | DO k = nzb_v_inner(j,i) + 1, nzt |
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96 | v(k,j,i) = v(k,j,i) + volume_flow_offset(2) |
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97 | ENDDO |
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98 | ENDDO |
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99 | ENDIF |
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100 | |
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101 | CALL exchange_horiz( v ) |
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102 | |
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103 | ENDIF |
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104 | |
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105 | ! |
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106 | !-- Remove mean vertical velocity |
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107 | IF ( ibc_p_b == 1 .AND. ibc_p_t == 1 ) THEN |
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108 | IF ( simulated_time > 0.0 ) THEN ! otherwise nzb_w_inner is not yet known |
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109 | w_l = 0.0; w_l_l = 0.0 |
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110 | DO i = nxl, nxr |
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111 | DO j = nys, nyn |
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112 | DO k = nzb_w_inner(j,i)+1, nzt |
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113 | w_l_l(k) = w_l_l(k) + w(k,j,i) |
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114 | ENDDO |
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115 | ENDDO |
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116 | ENDDO |
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117 | #if defined( __parallel ) |
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118 | CALL MPI_ALLREDUCE( w_l_l(1), w_l(1), nzt, MPI_REAL, MPI_SUM, comm2d, & |
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119 | ierr ) |
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120 | #else |
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121 | w_l = w_l_l |
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122 | #endif |
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123 | DO k = 1, nzt |
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124 | w_l(k) = w_l(k) / ngp_2dh_outer(k,0) |
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125 | ENDDO |
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126 | DO i = nxl-1, nxr+1 |
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127 | DO j = nys-1, nyn+1 |
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128 | DO k = nzb_w_inner(j,i)+1, nzt |
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129 | w(k,j,i) = w(k,j,i) - w_l(k) |
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130 | ENDDO |
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131 | ENDDO |
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132 | ENDDO |
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133 | ENDIF |
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134 | ENDIF |
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135 | |
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136 | ! |
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137 | !-- Compute the divergence of the provisional velocity field. |
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138 | CALL cpu_log( log_point_s(1), 'divergence', 'start' ) |
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139 | |
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140 | IF ( psolver == 'multigrid' ) THEN |
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141 | !$OMP PARALLEL DO SCHEDULE( STATIC ) |
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142 | DO i = nxl-1, nxr+1 |
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143 | DO j = nys-1, nyn+1 |
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144 | DO k = nzb, nzt+1 |
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145 | d(k,j,i) = 0.0 |
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146 | ENDDO |
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147 | ENDDO |
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148 | ENDDO |
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149 | ELSE |
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150 | !$OMP PARALLEL DO SCHEDULE( STATIC ) |
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151 | DO i = nxl, nxra |
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152 | DO j = nys, nyna |
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153 | DO k = nzb+1, nzta |
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154 | d(k,j,i) = 0.0 |
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155 | ENDDO |
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156 | ENDDO |
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157 | ENDDO |
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158 | ENDIF |
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159 | |
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160 | localsum = 0.0 |
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161 | threadsum = 0.0 |
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162 | |
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163 | #if defined( __ibm ) |
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164 | !$OMP PARALLEL PRIVATE (i,j,k) FIRSTPRIVATE(threadsum) REDUCTION(+:localsum) |
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165 | !$OMP DO SCHEDULE( STATIC ) |
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166 | DO i = nxl, nxr |
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167 | DO j = nys, nyn |
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168 | DO k = nzb_s_inner(j,i)+1, nzt |
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169 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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170 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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171 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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172 | ENDDO |
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173 | ! |
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174 | !-- Additional pressure boundary condition at the bottom boundary for |
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175 | !-- inhomogeneous Prandtl layer heat fluxes and temperatures, respectively |
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176 | !-- dp/dz = -(dtau13/dx + dtau23/dy) + g*pt'/pt0. |
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177 | !-- This condition must not be applied at the start of a run, because then |
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178 | !-- flow_statistics has not yet been called and thus sums = 0. |
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179 | IF ( ibc_p_b == 2 .AND. sums(nzb+1,4) /= 0.0 ) THEN |
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180 | k = nzb_s_inner(j,i) |
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181 | d(k+1,j,i) = d(k+1,j,i) + ( & |
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182 | ( usws(j,i+1) - usws(j,i) ) * ddx & |
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183 | + ( vsws(j+1,i) - vsws(j,i) ) * ddy & |
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184 | - g * ( pt(k+1,j,i) - sums(k+1,4) ) / & |
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185 | sums(k+1,4) & |
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186 | ) * ddzw(k+1) |
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187 | ENDIF |
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188 | |
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189 | ! |
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190 | !-- Compute possible PE-sum of divergences for flow_statistics |
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191 | DO k = nzb_s_inner(j,i)+1, nzt |
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192 | threadsum = threadsum + ABS( d(k,j,i) ) |
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193 | ENDDO |
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194 | |
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195 | ! |
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196 | !-- Velocity corrections are made with Euler step size. Right hand side |
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197 | !-- of Poisson equation has to be set appropriately |
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198 | DO k = nzb_s_inner(j,i)+1, nzt |
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199 | d(k,j,i) = d(k,j,i) / dt_3d |
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200 | ENDDO |
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201 | |
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202 | ENDDO |
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203 | ENDDO |
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204 | |
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205 | localsum = localsum + threadsum |
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206 | !$OMP END PARALLEL |
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207 | #else |
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208 | IF ( ibc_p_b == 2 .AND. sums(nzb+1,4) /= 0.0 ) THEN |
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209 | !$OMP PARALLEL PRIVATE (i,j,k) |
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210 | !$OMP DO SCHEDULE( STATIC ) |
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211 | DO i = nxl, nxr |
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212 | DO j = nys, nyn |
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213 | DO k = nzb_s_inner(j,i)+1, nzt |
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214 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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215 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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216 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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217 | ENDDO |
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218 | ENDDO |
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219 | ! |
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220 | !-- Additional pressure boundary condition at the bottom boundary for |
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221 | !-- inhomogeneous Prandtl layer heat fluxes and temperatures, respectively |
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222 | !-- dp/dz = -(dtau13/dx + dtau23/dy) + g*pt'/pt0. |
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223 | !-- This condition must not be applied at the start of a run, because then |
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224 | !-- flow_statistics has not yet been called and thus sums = 0. |
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225 | DO j = nys, nyn |
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226 | k = nzb_s_inner(j,i) |
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227 | d(k+1,j,i) = d(k+1,j,i) + ( & |
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228 | ( usws(j,i+1) - usws(j,i) ) * ddx & |
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229 | + ( vsws(j+1,i) - vsws(j,i) ) * ddy & |
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230 | - g * ( pt(k+1,j,i) - sums(k+1,4) ) / & |
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231 | sums(k+1,4) & |
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232 | ) * ddzw(k+1) |
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233 | ENDDO |
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234 | ENDDO |
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235 | !$OMP END PARALLEL |
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236 | |
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237 | ELSE |
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238 | |
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239 | !$OMP PARALLEL PRIVATE (i,j,k) |
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240 | !$OMP DO SCHEDULE( STATIC ) |
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241 | DO i = nxl, nxr |
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242 | DO j = nys, nyn |
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243 | DO k = nzb_s_inner(j,i)+1, nzt |
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244 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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245 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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246 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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247 | ENDDO |
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248 | ENDDO |
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249 | ENDDO |
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250 | !$OMP END PARALLEL |
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251 | |
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252 | ENDIF |
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253 | |
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254 | ! |
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255 | !-- Compute possible PE-sum of divergences for flow_statistics |
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256 | !$OMP PARALLEL PRIVATE (i,j,k) FIRSTPRIVATE(threadsum) REDUCTION(+:localsum) |
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257 | !$OMP DO SCHEDULE( STATIC ) |
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258 | DO i = nxl, nxr |
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259 | DO j = nys, nyn |
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260 | DO k = nzb+1, nzt |
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261 | threadsum = threadsum + ABS( d(k,j,i) ) |
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262 | ENDDO |
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263 | ENDDO |
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264 | ENDDO |
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265 | localsum = localsum + threadsum |
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266 | !$OMP END PARALLEL |
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267 | |
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268 | ! |
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269 | !-- Velocity corrections are made with Euler step size. Right hand side |
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270 | !-- of Poisson equation has to be set appropriately |
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271 | !$OMP DO SCHEDULE( STATIC ) |
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272 | DO i = nxl, nxr |
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273 | DO j = nys, nyn |
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274 | DO k = nzb_s_inner(j,i)+1, nzt |
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275 | d(k,j,i) = d(k,j,i) / dt_3d |
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276 | ENDDO |
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277 | ENDDO |
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278 | ENDDO |
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279 | #endif |
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280 | |
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281 | ! |
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282 | !-- For completeness, set the divergence sum of all statistic regions to those |
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283 | !-- of the total domain |
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284 | sums_divold_l(0:statistic_regions) = localsum |
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285 | |
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286 | ! |
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287 | !-- Determine absolute minimum/maximum (only for test cases, therefore as |
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288 | !-- comment line) |
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289 | ! CALL global_min_max( nzb+1, nzt, nys, nyn, nxl, nxr, d, 'abs', divmax, & |
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290 | ! divmax_ijk ) |
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291 | |
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292 | CALL cpu_log( log_point_s(1), 'divergence', 'stop' ) |
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293 | |
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294 | ! |
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295 | !-- Compute the pressure perturbation solving the Poisson equation |
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296 | IF ( psolver(1:7) == 'poisfft' ) THEN |
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297 | |
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298 | ! |
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299 | !-- Enlarge the size of tend, used as a working array for the transpositions |
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300 | IF ( nxra > nxr .OR. nyna > nyn .OR. nza > nz ) THEN |
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301 | DEALLOCATE( tend ) |
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302 | ALLOCATE( tend(1:nza,nys:nyna,nxl:nxra) ) |
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303 | ENDIF |
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304 | |
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305 | ! |
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306 | !-- Solve Poisson equation via FFT and solution of tridiagonal matrices |
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307 | IF ( psolver == 'poisfft' ) THEN |
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308 | ! |
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309 | !-- Solver for 2d-decomposition |
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310 | CALL poisfft( d, tend ) |
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311 | ELSEIF ( psolver == 'poisfft_hybrid' ) THEN |
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312 | ! |
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313 | !-- Solver for 1d-decomposition (using MPI and OpenMP). |
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314 | !-- The old hybrid-solver is still included here, as long as there |
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315 | !-- are some optimization problems in poisfft |
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316 | CALL poisfft_hybrid( d ) |
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317 | ENDIF |
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318 | |
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319 | ! |
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320 | !-- Resize tend to its normal size |
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321 | IF ( nxra > nxr .OR. nyna > nyn .OR. nza > nz ) THEN |
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322 | DEALLOCATE( tend ) |
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323 | ALLOCATE( tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) ) |
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324 | ENDIF |
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325 | |
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326 | ! |
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327 | !-- Store computed perturbation pressure and set boundary condition in |
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328 | !-- z-direction |
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329 | !$OMP PARALLEL DO |
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330 | DO i = nxl, nxr |
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331 | DO j = nys, nyn |
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332 | DO k = nzb+1, nzt |
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333 | tend(k,j,i) = d(k,j,i) |
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334 | ENDDO |
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335 | ENDDO |
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336 | ENDDO |
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337 | |
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338 | ! |
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339 | !-- Bottom boundary: |
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340 | !-- This condition is only required for internal output. The pressure |
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341 | !-- gradient (dp(nzb+1)-dp(nzb))/dz is not used anywhere else. |
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342 | IF ( ibc_p_b == 1 ) THEN |
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343 | ! |
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344 | !-- Neumann (dp/dz = 0) |
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345 | !$OMP PARALLEL DO |
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346 | DO i = nxl-1, nxr+1 |
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347 | DO j = nys-1, nyn+1 |
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348 | tend(nzb_s_inner(j,i),j,i) = tend(nzb_s_inner(j,i)+1,j,i) |
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349 | ENDDO |
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350 | ENDDO |
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351 | |
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352 | ELSEIF ( ibc_p_b == 2 ) THEN |
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353 | ! |
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354 | !-- Neumann condition for inhomogeneous surfaces, |
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355 | !-- here currently still in the form of a zero gradient. Actually |
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356 | !-- dp/dz = -(dtau13/dx + dtau23/dy) + g*pt'/pt0 would have to be used for |
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357 | !-- the computation (cf. above: computation of divergences). |
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358 | !$OMP PARALLEL DO |
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359 | DO i = nxl-1, nxr+1 |
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360 | DO j = nys-1, nyn+1 |
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361 | tend(nzb_s_inner(j,i),j,i) = tend(nzb_s_inner(j,i)+1,j,i) |
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362 | ENDDO |
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363 | ENDDO |
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364 | |
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365 | ELSE |
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366 | ! |
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367 | !-- Dirichlet |
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368 | !$OMP PARALLEL DO |
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369 | DO i = nxl-1, nxr+1 |
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370 | DO j = nys-1, nyn+1 |
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371 | tend(nzb_s_inner(j,i),j,i) = 0.0 |
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372 | ENDDO |
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373 | ENDDO |
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374 | |
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375 | ENDIF |
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376 | |
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377 | ! |
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378 | !-- Top boundary |
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379 | IF ( ibc_p_t == 1 ) THEN |
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380 | ! |
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381 | !-- Neumann |
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382 | !$OMP PARALLEL DO |
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383 | DO i = nxl-1, nxr+1 |
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384 | DO j = nys-1, nyn+1 |
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385 | tend(nzt+1,j,i) = tend(nzt,j,i) |
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386 | ENDDO |
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387 | ENDDO |
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388 | |
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389 | ELSE |
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390 | ! |
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391 | !-- Dirichlet |
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392 | !$OMP PARALLEL DO |
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393 | DO i = nxl-1, nxr+1 |
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394 | DO j = nys-1, nyn+1 |
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395 | tend(nzt+1,j,i) = 0.0 |
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396 | ENDDO |
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397 | ENDDO |
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398 | |
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399 | ENDIF |
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400 | |
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401 | ! |
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402 | !-- Exchange boundaries for p |
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403 | CALL exchange_horiz( tend ) |
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404 | |
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405 | ELSEIF ( psolver == 'sor' ) THEN |
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406 | |
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407 | ! |
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408 | !-- Solve Poisson equation for perturbation pressure using SOR-Red/Black |
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409 | !-- scheme |
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410 | CALL sor( d, ddzu, ddzw, p ) |
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411 | tend = p |
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412 | |
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413 | ELSEIF ( psolver == 'multigrid' ) THEN |
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414 | |
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415 | ! |
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416 | !-- Solve Poisson equation for perturbation pressure using Multigrid scheme, |
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417 | !-- array tend is used to store the residuals |
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418 | CALL poismg( tend ) |
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419 | |
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420 | ! |
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421 | !-- Restore perturbation pressure on tend because this array is used |
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422 | !-- further below to correct the velocity fields |
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423 | tend = p |
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424 | |
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425 | ENDIF |
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426 | |
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427 | ! |
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428 | !-- Store perturbation pressure on array p, used in the momentum equations |
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429 | IF ( psolver(1:7) == 'poisfft' ) THEN |
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430 | ! |
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431 | !-- Here, only the values from the left and right boundaries are copied |
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432 | !-- The remaining values are copied in the following loop due to speed |
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433 | !-- optimization |
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434 | !$OMP PARALLEL DO |
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435 | DO j = nys-1, nyn+1 |
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436 | DO k = nzb, nzt+1 |
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437 | p(k,j,nxl-1) = tend(k,j,nxl-1) |
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438 | p(k,j,nxr+1) = tend(k,j,nxr+1) |
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439 | ENDDO |
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440 | ENDDO |
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441 | ENDIF |
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442 | |
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443 | ! |
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444 | !-- Correction of the provisional velocities with the current perturbation |
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445 | !-- pressure just computed |
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446 | IF ( conserve_volume_flow .AND. & |
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447 | ( bc_lr == 'cyclic' .OR. bc_ns == 'cyclic' ) ) THEN |
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448 | volume_flow_l(1) = 0.0 |
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449 | volume_flow_l(2) = 0.0 |
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450 | ENDIF |
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451 | !$OMP PARALLEL PRIVATE (i,j,k) |
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452 | !$OMP DO |
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453 | DO i = nxl, nxr |
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454 | IF ( psolver(1:7) == 'poisfft' ) THEN |
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455 | DO j = nys-1, nyn+1 |
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456 | DO k = nzb, nzt+1 |
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457 | p(k,j,i) = tend(k,j,i) |
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458 | ENDDO |
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459 | ENDDO |
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460 | ENDIF |
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461 | DO j = nys, nyn |
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462 | DO k = nzb_w_inner(j,i)+1, nzt |
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463 | w(k,j,i) = w(k,j,i) - dt_3d * & |
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464 | ( tend(k+1,j,i) - tend(k,j,i) ) * ddzu(k+1) |
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465 | ENDDO |
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466 | DO k = nzb_u_inner(j,i)+1, nzt |
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467 | u(k,j,i) = u(k,j,i) - dt_3d * ( tend(k,j,i) - tend(k,j,i-1) ) * ddx |
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468 | ENDDO |
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469 | DO k = nzb_v_inner(j,i)+1, nzt |
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470 | v(k,j,i) = v(k,j,i) - dt_3d * ( tend(k,j,i) - tend(k,j-1,i) ) * ddy |
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471 | ENDDO |
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472 | |
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473 | ! |
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474 | !-- Sum up the volume flow through the right and north boundary |
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475 | IF ( conserve_volume_flow .AND. bc_lr == 'cyclic' .AND. & |
---|
476 | i == nx ) THEN |
---|
477 | !$OMP CRITICAL |
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478 | DO k = nzb_2d(j,i) + 1, nzt |
---|
479 | volume_flow_l(1) = volume_flow_l(1) + u(k,j,i) * dzu(k) |
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480 | ENDDO |
---|
481 | !$OMP END CRITICAL |
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482 | ENDIF |
---|
483 | IF ( conserve_volume_flow .AND. bc_ns == 'cyclic' .AND. & |
---|
484 | j == ny ) THEN |
---|
485 | !$OMP CRITICAL |
---|
486 | DO k = nzb_2d(j,i) + 1, nzt |
---|
487 | volume_flow_l(2) = volume_flow_l(2) + v(k,j,i) * dzu(k) |
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488 | ENDDO |
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489 | !$OMP END CRITICAL |
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490 | ENDIF |
---|
491 | |
---|
492 | ENDDO |
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493 | ENDDO |
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494 | !$OMP END PARALLEL |
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495 | |
---|
496 | ! |
---|
497 | !-- Conserve the volume flow |
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498 | IF ( conserve_volume_flow .AND. & |
---|
499 | ( bc_lr == 'cyclic' .OR. bc_ns == 'cyclic' ) ) THEN |
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500 | |
---|
501 | #if defined( __parallel ) |
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502 | CALL MPI_ALLREDUCE( volume_flow_l(1), volume_flow(1), 2, MPI_REAL, & |
---|
503 | MPI_SUM, comm2d, ierr ) |
---|
504 | #else |
---|
505 | volume_flow = volume_flow_l |
---|
506 | #endif |
---|
507 | |
---|
508 | volume_flow_offset = ( volume_flow_initial - volume_flow ) / & |
---|
509 | volume_flow_area |
---|
510 | |
---|
511 | !$OMP PARALLEL PRIVATE (i,j,k) |
---|
512 | !$OMP DO |
---|
513 | DO i = nxl, nxr |
---|
514 | DO j = nys, nyn |
---|
515 | IF ( bc_lr == 'cyclic' ) THEN |
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516 | DO k = nzb_u_inner(j,i) + 1, nzt |
---|
517 | u(k,j,i) = u(k,j,i) + volume_flow_offset(1) |
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518 | ENDDO |
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519 | ENDIF |
---|
520 | IF ( bc_ns == 'cyclic' ) THEN |
---|
521 | DO k = nzb_v_inner(j,i) + 1, nzt |
---|
522 | v(k,j,i) = v(k,j,i) + volume_flow_offset(2) |
---|
523 | ENDDO |
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524 | ENDIF |
---|
525 | ENDDO |
---|
526 | ENDDO |
---|
527 | !$OMP END PARALLEL |
---|
528 | |
---|
529 | ENDIF |
---|
530 | |
---|
531 | ! |
---|
532 | !-- Exchange of boundaries for the velocities |
---|
533 | CALL exchange_horiz( u ) |
---|
534 | CALL exchange_horiz( v ) |
---|
535 | CALL exchange_horiz( w ) |
---|
536 | |
---|
537 | ! |
---|
538 | !-- Compute the divergence of the corrected velocity field, |
---|
539 | !-- a possible PE-sum is computed in flow_statistics |
---|
540 | CALL cpu_log( log_point_s(1), 'divergence', 'start' ) |
---|
541 | sums_divnew_l = 0.0 |
---|
542 | |
---|
543 | ! |
---|
544 | !-- d must be reset to zero because it can contain nonzero values below the |
---|
545 | !-- topography |
---|
546 | IF ( topography /= 'flat' ) d = 0.0 |
---|
547 | |
---|
548 | localsum = 0.0 |
---|
549 | threadsum = 0.0 |
---|
550 | |
---|
551 | !$OMP PARALLEL PRIVATE (i,j,k) FIRSTPRIVATE(threadsum) REDUCTION(+:localsum) |
---|
552 | !$OMP DO SCHEDULE( STATIC ) |
---|
553 | #if defined( __ibm ) |
---|
554 | DO i = nxl, nxr |
---|
555 | DO j = nys, nyn |
---|
556 | DO k = nzb_s_inner(j,i)+1, nzt |
---|
557 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
---|
558 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
---|
559 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
---|
560 | ENDDO |
---|
561 | DO k = nzb+1, nzt |
---|
562 | threadsum = threadsum + ABS( d(k,j,i) ) |
---|
563 | ENDDO |
---|
564 | ENDDO |
---|
565 | ENDDO |
---|
566 | #else |
---|
567 | DO i = nxl, nxr |
---|
568 | DO j = nys, nyn |
---|
569 | DO k = nzb_s_inner(j,i)+1, nzt |
---|
570 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
---|
571 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
---|
572 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
---|
573 | threadsum = threadsum + ABS( d(k,j,i) ) |
---|
574 | ENDDO |
---|
575 | ENDDO |
---|
576 | ENDDO |
---|
577 | #endif |
---|
578 | localsum = localsum + threadsum |
---|
579 | !$OMP END PARALLEL |
---|
580 | |
---|
581 | ! |
---|
582 | !-- For completeness, set the divergence sum of all statistic regions to those |
---|
583 | !-- of the total domain |
---|
584 | sums_divnew_l(0:statistic_regions) = localsum |
---|
585 | |
---|
586 | CALL cpu_log( log_point_s(1), 'divergence', 'stop' ) |
---|
587 | |
---|
588 | CALL cpu_log( log_point(8), 'pres', 'stop' ) |
---|
589 | |
---|
590 | |
---|
591 | END SUBROUTINE pres |
---|