Basic example

Basic example

Local variables to be added

Initialization

One can get any field using cs_field_by_name function (use cs_field_by_name_try if one is not sure the field exists). "scalar1" is the name related to the first user-defined scalar variable. f->val[cell_id] is the value of this variable in cell number cell_id.

ONLY done if there is no restart computation.

 
  const cs_lnum_t n_cells = domain->mesh->n_cells;
 
  /* If this is restarted computation, do not reinitialize values */
  if (domain->time_step->nt_prev > 0)
    return;
 
  /* Initialize "scalar1" field to 25 only if it exists  */
  cs_field_t *fld = cs_field_try("scalar1");
 
  if (fld != nullptr) {
    auto cvar_fld = fld->get_val_s();
    for (cs_lnum_t cell_id = 0; cell_id < n_cells; cell_id++)
      cvar_fld[cell_id] = 25;
  }
 
  /* In the case of the EBU pre-mixed flame module the user can initialize
   * (by example 25):
   * the mixing rate
   * the fresh gas mass fraction
   * the mixture enthalpy */
 
  auto cvar_fm = CS_F_(fm)->get_val_s();
  auto cvar_ygfm = CS_F_(ygfm)->get_val_s();
  auto cvar_scalt = cs_thermal_model_field()->get_val_s();
 
  for (cs_lnum_t c_id = 0; c_id < n_cells; c_id++) {
    cvar_fm[c_id] = 25;
    cvar_ygfm[c_id] = 25;
    cvar_scalt[c_id] = 25;
  }