Modifier_pour_fluide_dilatable.cpp

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#include <Modifier_pour_fluide_dilatable.h>
#include <Fluide_Dilatable_base.h>
#include <Modele_turbulence_hyd_base.h>
#include <Equation_base.h>
#include <Probleme_base.h>
#include <Domaine_VF.h>
#include <TRUSTVect.h>
 
static void multiplier_ou_diviser(DoubleVect& x, const DoubleVect& y, int diviser)
{
  if (!diviser)
    tab_multiply_any_shape(x, y, VECT_REAL_ITEMS);
  else
    tab_divide_any_shape(x, y, VECT_REAL_ITEMS);
  x.echange_espace_virtuel();
  //Debog::verifier("multiplier_ou_diviser x/y after x:",x);
}
 
// Modif B.M: only the real part of the array is filled.
void multiplier_diviser_rho(DoubleVect& tab, const Fluide_Dilatable_base& le_fluide, int diviser)
{
  const Domaine_VF& zvf = ref_cast(Domaine_VF, le_fluide.vitesse().domaine_dis_base());
  // Descriptors of the element and face arrays:
  const Domaine& domaine = zvf.domaine();
  const MD_Vector& md_elem = domaine.les_elems().get_md_vector();
  const MD_Vector& md_faces = zvf.md_vector_faces();
  const MD_Vector& md_faces_bord = zvf.md_vector_faces_bord();
 
  if (tab.get_md_vector() == md_faces_bord)
    {
      const DoubleTab& rho = ref_cast(Fluide_Dilatable_base,le_fluide).rho_discvit();
      DoubleTrav rho_bord;
      // B.M. creating a copy to avoid manipulating size checks in multiply_any_shape
      // or creating a DoubleTab pointing to rho...
      zvf.creer_tableau_faces_bord(rho_bord, RESIZE_OPTIONS::NOCOPY_NOINIT);
      rho_bord.inject_array(rho, rho_bord.size());
      multiplier_ou_diviser(tab, rho_bord, diviser);
      return;
    }
 
  if (tab.get_md_vector() == md_faces)
    {
      const DoubleTab& rho_faces = ref_cast(Fluide_Dilatable_base,le_fluide).rho_discvit();
      multiplier_ou_diviser(tab, rho_faces, diviser);
      return;
    }
 
  const DoubleTab& rho = le_fluide.masse_volumique().valeurs();
  if (tab.get_md_vector() == md_elem && rho.get_md_vector() == md_elem)
    {
      multiplier_ou_diviser(tab, rho, diviser);
      return;
    }
 
  if (tab.get_md_vector() == md_elem && rho.get_md_vector() == md_faces)
    {
      // rho must be computed at elements
      DoubleTrav tab_rho_elem;
      domaine.creer_tableau_elements(tab_rho_elem, RESIZE_OPTIONS::NOCOPY_NOINIT);
      const int nb_elem_tot = domaine.nb_elem_tot();
      const int nfe = zvf.elem_faces().dimension(1);
      const double facteur = 1. / nfe;
      CDoubleArrView tab_rho = static_cast<const DoubleVect&>(le_fluide.masse_volumique().valeurs()).view_ro();
      CIntTabView elem_faces = zvf.elem_faces().view_ro();
      DoubleArrView rho_elem = static_cast<DoubleVect&>(tab_rho_elem).view_wo();
      Kokkos::parallel_for(start_gpu_timer(__KERNEL_NAME__), nb_elem_tot, KOKKOS_LAMBDA(const int elem)
      {
        double x = 0.;
        for (int face = 0; face < nfe; face++)
          {
            int f = elem_faces(elem, face);
            x += tab_rho[f];
          }
        rho_elem[elem] = x * facteur;
      });
      end_gpu_timer(__KERNEL_NAME__);
      multiplier_ou_diviser(tab, tab_rho_elem, diviser);
      return;
    }
 
  Cerr << "Error in Modifier_pour_fluide_dilatable.cpp: multiplier_rho. Invalid discretization of tab and rho." << finl;
  Process::exit();
}
 
/*! @brief Multiplies the array val by the density if the fluid is dilatable.
 *
 * @brief The array val can have various localizations (determined from get_md_vector())
 *   and can be of type DoubleTab with arbitrary dimension(i>0) (multiple components).
 *
 */
void multiplier_par_rho_si_dilatable(DoubleVect& val, const Milieu_base& mil)
{
  if (sub_type(Fluide_Dilatable_base, mil))
    multiplier_diviser_rho(val, ref_cast(Fluide_Dilatable_base, mil), 0 /* multiplier */);
  else
    {
      Cerr << "What ?? The method multiplier_par_rho_si_dilatable should not be called since your fluid is not dilatable !!" << finl;
      Process::exit();
    }
}
 
/*! @brief Same as multiplier_par_rho_si_dilatable but divides by rho.
 *
 */
void diviser_par_rho_si_dilatable(DoubleVect& val, const Milieu_base& mil)
{
  if (sub_type(Fluide_Dilatable_base, mil))
    multiplier_diviser_rho(val, ref_cast(Fluide_Dilatable_base, mil), 1 /* diviser */);
  else
    {
      Cerr << "What ?? The method diviser_par_rho_si_dilatable should not be called since your fluid is not dilatable !!" << finl;
      Process::exit();
    }
}
 
void correction_nut_et_cisaillement_paroi_si_qc(Modele_turbulence_hyd_base& mod)
{
  // check if the fluid is QC (quasi-compressible)
  if (sub_type(Fluide_Dilatable_base, mod.equation().probleme().milieu()))
    {
      const Fluide_Dilatable_base& le_fluide = ref_cast(Fluide_Dilatable_base, mod.equation().probleme().milieu());
      // 1 multiply nu_t by rho
 
      DoubleTab& nut = ref_cast_non_const(DoubleTab, mod.viscosite_turbulente().valeurs());
      multiplier_diviser_rho(nut, le_fluide, 0 /* multiplier */);
 
      // 2  Modify the wall shear stress
      const DoubleTab& cisaillement_paroi = mod.loi_paroi().Cisaillement_paroi();
      DoubleTab& cisaillement = ref_cast_non_const(DoubleTab, cisaillement_paroi);
      multiplier_diviser_rho(cisaillement, le_fluide, 0 /* multiplier */);
      cisaillement.echange_espace_virtuel();
    }
  else
    {
      Cerr << "What ?? The method Correction_nut_et_cisaillement_paroi_si_qc should not be called since your fluid is not dilatable !!" << finl;
      Process::exit();
    }
}