Op_Dift_VDF_Elem_base.cpp

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#include <Op_Dift_VDF_Elem_base.h>
 
Implemente_base(Op_Dift_VDF_Elem_base,"Op_Dift_VDF_Elem_base",Op_Dift_VDF_base);
Sortie& Op_Dift_VDF_Elem_base::printOn(Sortie& s ) const { return s << que_suis_je() ; }
Entree& Op_Dift_VDF_Elem_base::readOn(Entree& s ) { return s ; }
 
/*
 * Calcul du pas de temps de stabilite : Pour const/var Elem, const/var Multi-inco
 * La diffusivite laminaire est constante ou variable, La diffusivite turbulente est variable
 *    dt_stab = Min (1/(2*(diff_lam(i)+diff_turb(i))*coeff(elem))
 *     ou
 *    dt_stab = Min (1/(2*(Max(diffu1(i),diffu2(i),....)+diff_turb(i))*coeff(elem))
 *  avec coeff =  1/(dx*dx) + 1/(dy*dy) + 1/(dz*dz) et i decrivant l'ensemble des elements du maillage
 *  diffu1(i),diffu2(i) ...: diffusivites des differents constituants sur l'element
 */
double Op_Dift_VDF_Elem_base::calculer_dt_stab_elem() const
{
  double dt_stab, coef = -1.e10;
  const Domaine_VDF& domaine_VDF = iter_->domaine();
  const IntTab& elem_faces = domaine_VDF.elem_faces();
  const DoubleVect& alpha_t = diffusivite_turbulente().valeurs();
  bool is_concentration = (equation().que_suis_je().debute_par("Convection_Diffusion_Concentration") || equation().que_suis_je().debute_par("Convection_Diffusion_Espece"));
 
  ArrOfInt numfa(2*dimension);
  for (int elem = 0; elem < domaine_VDF.nb_elem(); elem++)
    {
      // choice of factor
      double rcp = 1.;
      if (!is_concentration)
        {
          const int Ccp = sub_type(Champ_Uniforme, mon_equation->milieu().capacite_calorifique());
          const int Cr = sub_type(Champ_Uniforme, mon_equation->milieu().masse_volumique());
          const DoubleTab& tab_Cp = mon_equation->milieu().capacite_calorifique().valeurs(), tab_r = mon_equation->milieu().masse_volumique().valeurs();
          rcp = tab_r(Cr ? 0 : elem, 0) * tab_Cp(Ccp ? 0 : elem, 0);
        }
 
      double moy = 0.;
      for (int i = 0; i < 2 * dimension; i++) numfa[i] = elem_faces(elem, i);
 
      // XXX : E Saikali fixed for multi-inco because it was 1/dx instead of 1/dx^2 ... watch out for discrepancies!
      // it was like this: for (int d = 0; d < dimension; d++) moy += 1. / (domaine_VDF.dist_face(numfa[d], numfa[dimension + d], d));
      for (int d = 0; d < dimension; d++)
        {
          const double hd = domaine_VDF.dist_face(numfa[d], numfa[dimension + d], d);
          moy += 1. / (hd * hd);
        }
      const double alpha_local = (alpha_(elem) + alpha_t(elem)) / rcp * moy;
      coef = std::max(coef, alpha_local);
    }
 
  coef = Process::mp_max(coef);
  dt_stab = 1. / (2. * (coef + DMINFLOAT));
  return dt_stab;
}
 
/*
 * Calcul du pas de temps de stabilite : Pour const/var Axi, const/var Multi-inco Axi
 * La diffusivite laminaire est constante ou variable, La diffusivite turbulente est variable
 *    dt_stab = Min (1/(2*(diff_lam(i)+diff_turb(i))*coeff(elem))
 *     ou
 *    dt_stab = Min (1/(2*(Max(diffu1(i),diffu2(i),....)+diff_turb(i))*coeff(elem))
 *  avec coeff =  1/(dx*dx) + 1/(dy*dy) + 1/(dz*dz) et i decrivant l'ensemble des elements du maillage
 *  diffu1(i),diffu2(i) ...: diffusivites des differents constituants sur l'element
 */
double Op_Dift_VDF_Elem_base::calculer_dt_stab_elem_axi() const
{
  double dt_stab, coef = -1.e10;
  const Domaine_VDF& domaine_VDF = iter_->domaine();
  const IntTab& elem_faces = domaine_VDF.elem_faces();
  const DoubleVect& alpha_t = diffusivite_turbulente().valeurs();
  double alpha_local,h_x,h_y,h_z;
 
  if (dimension == 2)
    {
      int numfa[4];
      for (int elem=0; elem<domaine_VDF.nb_elem(); elem++)
        {
          for (int i=0; i<4; i++) numfa[i] = elem_faces(elem,i);
          h_x = domaine_VDF.dist_face_axi(numfa[0],numfa[2],0);
          h_y = domaine_VDF.dist_face_axi(numfa[1],numfa[3],1);
          alpha_local = (alpha_(elem)+alpha_t(elem)) *(1/(h_x*h_x) + 1/(h_y*h_y));
          coef = std::max(coef,alpha_local);
        }
    }
  else if (dimension == 3)
    {
      int numfa[6];
      for (int elem=0; elem<domaine_VDF.nb_elem(); elem++)
        {
          for (int i=0; i<6; i++) numfa[i] = elem_faces(elem,i);
          h_x = domaine_VDF.dist_face_axi(numfa[0],numfa[3],0);
          h_y = domaine_VDF.dist_face_axi(numfa[1],numfa[4],1);
          h_z = domaine_VDF.dist_face_axi(numfa[2],numfa[5],2);
          alpha_local = (alpha_(elem)+alpha_t(elem)) *(1/(h_x*h_x) + 1/(h_y*h_y) + 1/(h_z*h_z));
          coef = std::max(coef,alpha_local);
        }
    }
 
  dt_stab = 1/(2*(coef+DMINFLOAT));
  return dt_stab;
}
 
double Op_Dift_VDF_Elem_base::calculer_dt_stab_elem_var_axi() const
{
  double dt_stab, coef = -1.e10;
  const Domaine_VDF& domaine_VDF = iter_->domaine();
  const IntTab& elem_faces = domaine_VDF.elem_faces();
  const DoubleVect& alpha_t = diffusivite_turbulente().valeurs();
  const int D = dimension;
 
  IntVect numfa(2 * D);
  DoubleVect h(D);
 
  for (int e = 0; e < domaine_VDF.nb_elem(); e++)
    {
      for (int i = 0; i < 2 * D; i++)
        numfa(i) = elem_faces(e, i);
      for (int d = 0; d < D; d++)
        h(d) = domaine_VDF.dist_face_axi(numfa(d), numfa(d + D), d);
      double invh = 0.;
      for (int d = 0; d < D; d++)
        invh += 1. / (h(d) * h(d));
      const double alpha_local = (alpha_(e) + alpha_t(e)) * invh;
      coef = std::max(coef, alpha_local);
    }
 
  dt_stab = 1. / (2. * (coef + DMINFLOAT));
  return dt_stab;
}
 
 
void Op_Dift_VDF_Elem_base::dimensionner_blocs(matrices_t matrices, const tabs_t& semi_impl) const
{
  const std::string& nom_inco = equation().inconnue().le_nom().getString();
  if (!matrices.count(nom_inco) || semi_impl.count(nom_inco)) return; //semi-implicit or no diagonal block -> nothing to do
 
  Matrice_Morse *mat = matrices.count(nom_inco) ? matrices.at(nom_inco) : nullptr, mat2;
  Op_VDF_Elem::dimensionner(iter_->domaine(), iter_->domaine_Cl(), mat2, equation().diffusion_multi_scalaire());
  mat->nb_colonnes() ? *mat += mat2 : *mat = mat2;
}