Changeset 4079 for palm/trunk/SOURCE/parin.f90

Timestamp:

Jul 9, 2019 6:04:41 PM (5 years ago)

Author:

suehring

Message:

Implementation of a monotonic flux limiter for vertical advection term in Wicker-Skamarock scheme. The flux limiter is currently only applied for passive scalars (passive scalar, chemical species, aerosols) within the region up to the highest topography, in order to avoid the built-up of large concentrations within poorly resolved cavities in urban environments. To enable the limiter monotonic_limiter_z = .T. must be set. Note, the limiter is currently only implemented for the cache-optimized version of advec_ws. Further changes in offline nesting: Set boundary condition for w at nzt+1 at all lateral boundaries (even though these won't enter the numerical solution), in order to avoid high vertical velocities in the run-control file which might built-up due to the mass-conservation; bugfix in offline nesting for chemical species

File:

• palm/trunk/SOURCE/parin.f90 (modified) (3 diffs)

palm/trunk/SOURCE/parin.f90

@@ -25 +25 @@
 ! -----------------
 ! $Id$
+! +monotonic_limiter_z
+! 
+! 4022 2019-06-12 11:52:39Z suehring
 ! Change default top boundary condition for pressure to Neumann in offline
 ! nesting case
@@ -590 +593 @@
              loop_optimization, lsf_exception, masking_method, mg_cycles,      &
              mg_switch_to_pe0_level, mixing_length_1d, momentum_advec,         &
+             monotonic_limiter_z,                                              &
              netcdf_precision, neutral, ngsrb,                                 &
              nsor, nsor_ini, nudging, nx, ny, nz, ocean_mode, omega,           &
@@ -660 +664 @@
              loop_optimization, lsf_exception, masking_method, mg_cycles,      &
              mg_switch_to_pe0_level, mixing_length_1d, momentum_advec,         &
+             monotonic_limiter_z,                                              &
              netcdf_precision, neutral, ngsrb,                                 &
              nsor, nsor_ini, nudging, nx, ny, nz, ocean_mode, omega,           &