Champ_Fonc_Elem_PolyMAC_MPFA_TC.cpp

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#include <Champ_Fonc_Elem_PolyMAC_MPFA_TC.h>
#include <grad_Champ_Face_PolyMAC_MPFA.h>
#include <Navier_Stokes_std.h>
#include <Domaine_Cl_PolyMAC_family.h>
 
 
Implemente_instanciable(Champ_Fonc_Elem_PolyMAC_MPFA_TC, "Champ_Fonc_Elem_PolyMAC_MPFA_TC", Champ_Fonc_Elem_PolyMAC_CDO);
 
Sortie& Champ_Fonc_Elem_PolyMAC_MPFA_TC::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Champ_Fonc_Elem_PolyMAC_MPFA_TC::readOn(Entree& s) { return s; }
 
void Champ_Fonc_Elem_PolyMAC_MPFA_TC::mettre_a_jour(double tps)
{
  if (temps() != tps) me_calculer(tps);
  Champ_Fonc_base::mettre_a_jour(tps);
}
 
void Champ_Fonc_Elem_PolyMAC_MPFA_TC::me_calculer(double tps) //See Pope 2000 page 367 for ref
{
  const Champ_Face_PolyMAC_MPFA& vitesse = ref_cast(Champ_Face_PolyMAC_MPFA, champ_.valeur());
  const Domaine_PolyMAC_MPFA& domaine = ref_cast(Domaine_PolyMAC_MPFA, vitesse.domaine_vf());
  int e, d_U, d_X, n;
  int D = dimension, N = champ_a_deriver().valeurs().line_size();
  int ne = domaine.nb_elem(), nf_tot = domaine.nb_faces_tot();
 
  const Navier_Stokes_std& eq = ref_cast(Navier_Stokes_std, vitesse.equation());
  DoubleTab& tab_tc = valeurs();
  const grad_Champ_Face_PolyMAC_MPFA& grad = ref_cast(grad_Champ_Face_PolyMAC_MPFA, eq.get_champ("gradient_vitesse"));
  const DoubleTab& tab_grad = grad.valeurs();
 
  for (e = 0; e < ne; e++)
    for (n = 0; n < N; n++)
      {
        tab_tc(e, n) = 0;
        for (d_U = 0; d_U < D; d_U++)
          for (d_X = 0; d_X < D; d_X++)
            {
              double Sij = 0.5 * (tab_grad(nf_tot + d_X + e * D, D * n + d_U) + tab_grad(nf_tot + d_U + e * D, D * n + d_X));
              if (d_U == d_X)
                for (int i = 0; i < D; i++)
                  Sij += -1. / D * tab_grad(nf_tot + i + e * D, D * n + i); // Substract the divergence : this term is zero in incompressible NS
              tab_tc(e, n) += Sij * Sij;
            }
        tab_tc(e, n) = sqrt(2 * tab_tc(e, n));
      }
 
  tab_tc.echange_espace_virtuel();
}