8.3
general documentation
Time step modification

Time step modification

We do a computation restart with an adaptive (variable in time and constant in space) or local (variable in time and space) time step. We want to modify the time step read from the restart file (in order to overcome a too slow evolution for instance).

Initialization

The following block can be added to cs_user_initialization.cpp to do this:

if (! cs_restart_present()) /* Useful only for a restart */
return;
const cs_lnum_t n_cells = domain->mesh->n_cells;
for (cs_lnum_t cell_id = 0; cell_id < n_cells; cell_id++) {
f->val[cell_id] *= 10.;
}
int cs_lnum_t
local mesh entity id
Definition: cs_defs.h:335
cs_field_t * cs_field_by_name(const char *name)
Return a pointer to a field based on its name.
Definition: cs_field.cpp:2489
int cs_restart_present(void)
Check if we have a restart directory.
Definition: cs_restart.cpp:2168
Field descriptor.
Definition: cs_field.h:131
cs_real_t * val
Definition: cs_field.h:152