Paroi_std_scal_hyd_VDF.cpp

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#include <Paroi_std_scal_hyd_VDF.h>
#include <Paroi_std_hyd_VDF.h>
#include <Champ_Uniforme.h>
#include <Champ_Uniforme_Morceaux.h>
#include <Champ_Fonc_Tabule.h>
#include <Champ_Fonc_Tabule_P0_VDF.h>
#include <Domaine_Cl_VDF.h>
#include <Dirichlet_paroi_fixe.h>
#include <Dirichlet_paroi_defilante.h>
#include <Probleme_base.h>
#include <Fluide_base.h>
#include <Modele_turbulence_hyd_base.h>
#include <Convection_Diffusion_Concentration.h>
#include <Modele_turbulence_scal_base.h>
#include <Constituant.h>
#include <Debog.h>
#include <Param.h>
 
Implemente_instanciable_sans_constructeur(Paroi_std_scal_hyd_VDF,"loi_standard_hydr_scalaire_VDF",Paroi_scal_hyd_base_VDF);
Implemente_instanciable(Loi_expert_scalaire_VDF,"Loi_expert_scalaire_VDF",Paroi_std_scal_hyd_VDF);
 
//     printOn()
/////
 
Sortie& Paroi_std_scal_hyd_VDF::printOn(Sortie& s) const
{
  return s << que_suis_je() << " " << le_nom();
}
 
//// readOn
//
 
Entree& Paroi_std_scal_hyd_VDF::readOn(Entree& s)
{
  return s ;
}
 
//     printOn()
/////
 
Sortie& Loi_expert_scalaire_VDF::printOn(Sortie& s) const
{
  return s;
}
 
//// readOn
//
 
Entree& Loi_expert_scalaire_VDF::readOn(Entree& s)
{
  Param param(que_suis_je());
  param.ajouter("prdt_sur_kappa",&Prdt_sur_kappa_);
  param.lire_avec_accolades_depuis(s);
  return s ;
}
 
 
/////////////////////////////////////////////////////////////////////////
//
//    Implementation des fonctions de la classe Paroi_std_scal_hyd_VDF
//
////////////////////////////////////////////////////////////////////////
 
int Paroi_std_scal_hyd_VDF::init_lois_paroi()
{
  return (Paroi_scal_hyd_base_VDF::init_lois_paroi() & init_lois_paroi_scalaire());
}
 
int  Paroi_std_scal_hyd_VDF::calculer_scal(Champ_Fonc_base& diffusivite_turb)
{
  const Domaine_VDF& domaine_VDF = ref_cast(Domaine_VDF, le_dom_dis_.valeur());
  const IntTab& face_voisins = domaine_VDF.face_voisins();
  DoubleTab& alpha_t = diffusivite_turb.valeurs();
  const Equation_base& eqn_hydr = mon_modele_turb_scal->equation().probleme().equation(0);
  const Fluide_base& le_fluide = ref_cast(Fluide_base,eqn_hydr.milieu());
  const Champ_Don_base& ch_visco_cin = le_fluide.viscosite_cinematique();
 
  const DoubleTab& tab_visco = ch_visco_cin.valeurs();
  int l_unif;
  double visco=-1;
  if (sub_type(Champ_Uniforme,ch_visco_cin))
    {
      l_unif = 1;
      visco = std::max(tab_visco(0,0),DMINFLOAT);
    }
  else
    l_unif = 0;
 
  if ((!l_unif) && (tab_visco.local_min_vect()<DMINFLOAT))
    //   on ne doit pas changer tab_visco ici !
    {
      Cerr << "In Paroi_std_scal_hyd_VDF::calculer_scal : visco = " << tab_visco.local_min_vect() << " <= 0 ? " << finl;
      throw;
    } //    tab_visco+=DMINFLOAT;
 
  double dist;
 
  // On recupere directement u_star par la loi de paroi. Il ne faut surtout pas
  // utiliser la methode calculer_u_star_avec_cisaillement car c'est faux en QC.
  // En effet,on recupere alors u_star*rho^0.5 et non u_star -> influence sur les
  // flux et l'impression du Nusselt.
 
  const RefObjU& modele_turbulence_hydr = eqn_hydr.get_modele(TURBULENCE);
  const Modele_turbulence_hyd_base& mod_turb_hydr = ref_cast(Modele_turbulence_hyd_base,modele_turbulence_hydr.valeur());
  const Turbulence_paroi_base& loi = mod_turb_hydr.loi_paroi();
  const DoubleVect& tab_u_star = loi.tab_u_star();
  const Convection_Diffusion_std& eqn = mon_modele_turb_scal->equation();
  const IntVect& orientation = domaine_VDF.orientation();
 
  // Recuperation de la diffusivite en fonction du type d'equation:
  int schmidt = (sub_type(Convection_Diffusion_Concentration,eqn) ? 1 : 0);
  const Champ_Don_base& alpha = (schmidt==1?ref_cast(Convection_Diffusion_Concentration,eqn).constituant().diffusivite_constituant():le_fluide.diffusivite());
  int alpha_uniforme = (sub_type(Champ_Uniforme,alpha) ? 1 : 0);
 
  // Verifications (l'algorithme n'est valable que si d_alpha est le meme pour chaque constituant)
  if (schmidt)
    {
      if (alpha_uniforme)
        {
          double d_alpha = alpha.valeurs()(0,0);
          assert(ref_cast(Convection_Diffusion_Concentration,eqn).constituant().nb_constituants()==alpha.valeurs().line_size());
          for (int nc=0; nc<alpha.valeurs().line_size(); nc++)
            {
              if (d_alpha!=alpha.valeurs()(0,nc))
                {
                  Cerr << "Error!" << finl;
                  Cerr << "Law of the wall are not implemented yet for constituants with different diffusion coefficients." << finl;
                  Process::exit();
                }
            }
        }
      else
        {
          for (int elem=0; elem<alpha.valeurs().dimension(0); elem++)
            {
              double d_alpha = alpha.valeurs()(elem,0);
              for (int nc=0; nc<alpha.valeurs().line_size(); nc++)
                {
                  if (d_alpha!=alpha.valeurs()(elem,nc))
                    {
                      Cerr << "Error!" << finl;
                      Cerr << "Law of the wall are not implemented yet for constituants with different diffusion coefficients." << finl;
                      Process::exit();
                    }
                }
            }
        }
    }
 
  // Boucle sur les bords:
  for (int n_bord=0; n_bord<domaine_VDF.nb_front_Cl(); n_bord++)
    {
 
      // Pour chaque condition limite on regarde son type
      // On applique les lois de paroi thermiques uniquement
      // aux voisinages des parois ou l'on impose la temperature
      // Si l'on est a une paroi adiabatique, le flux a la paroi est connu et nul.
      // Si l'on est a une paroi a flux impose, le flux est connu et il est
      // directement pris a la condition aux limites pour le calcul des flux diffusifs.
 
      const Cond_lim& la_cl = le_dom_Cl_dis_->les_conditions_limites(n_bord);
      if ( (sub_type(Dirichlet_paroi_fixe,la_cl.valeur()))
           || (sub_type(Dirichlet_paroi_defilante,la_cl.valeur())) )
        {
 
          const Front_VF& le_bord = ref_cast(Front_VF,la_cl->frontiere_dis());
          int ndeb = le_bord.num_premiere_face();
          int nfin = ndeb + le_bord.nb_faces();
 
          //find the associated boundary
          int boundary_index=-1;
          if (domaine_VDF.front_VF(n_bord).le_nom() == le_bord.le_nom())
            boundary_index=n_bord;
          assert(boundary_index >= 0);
 
          for (int num_face=ndeb; num_face<nfin; num_face++)
            {
              int elem = face_voisins(num_face,0);
              if (elem == -1)
                elem = face_voisins(num_face,1);
              if (axi)
                dist = domaine_VDF.dist_norm_bord_axi(num_face);
              else
                dist = domaine_VDF.dist_norm_bord(num_face);
 
              double u_star = tab_u_star(num_face);
              double d_alpha = (alpha_uniforme ? alpha.valeurs()(0,0) : alpha.valeurs()(elem,0) );
 
              int global_face=num_face;
              int local_face=domaine_VDF.front_VF(boundary_index).num_local_face(global_face);
 
              if (u_star == 0 || d_alpha == 0)
                {
                  equivalent_distance_[boundary_index](local_face)=dist;
                  alpha_t(elem) = 0;
                }
              else
                {
                  // calcul de la viscosite en y+
                  double d_visco = (l_unif ? visco : tab_visco(elem,0));
                  double Pr = d_visco/d_alpha;
                  double y_plus = dist*u_star/d_visco;
                  // L'expression de d_equiv ne tient pas compte de alpha_t comme en VEF
                  // Cela dit, c'est normale car c'est lors du calcul du flux que la
                  // turbulence est prise en compte.
                  // Ne pas uniformiser l'ecriture avec le VEF, car on tombe sur des problemes
                  // au niveau des parois contacts entre plusieurs problemes (alpha_t pas recuperable !).
                  equivalent_distance_[boundary_index](local_face)=d_alpha * T_plus(y_plus,Pr,Prdt_sur_kappa_) / u_star;
 
                  // Alex. C. : 19/02/2003
                  // We modify the value of the eddy diffusivity in the first off-wall element
                  // to have the value given by the theoretical mixing length model.
                  int ori = orientation(num_face);
                  double y0=0.5*domaine_VDF.dim_elem(elem,ori)*u_star/d_visco;
                  if (y0<0.5)
                    alpha_t(elem)=0.; // It means we are in the laminar layer.
                  else
                    {
                      double y0m=y0-0.5;
                      double y0p=y0+0.5;
                      alpha_t(elem)=d_visco/(T_plus(y0p,Pr,Prdt_sur_kappa_)-T_plus(y0m,Pr,Prdt_sur_kappa_))-d_alpha;
                    }
                }
            }
        }
    }
  return 1;
}
 
int Paroi_std_scal_hyd_VDF::init_lois_paroi_scalaire()
{
  /*
  // Initialisations de tab_d_equiv
  // On initialise les distances equivalentes avec les distances geometriques
  const Domaine_VDF& zvdf = le_dom_VDF.valeur();
 
  if (axi)
  for (int num_face=0; num_face<zvdf.nb_faces_bord(); num_face++)
  tab_d_equiv_[num_face] = zvdf.dist_norm_bord_axi(num_face);
  else
  for (int num_face=0; num_face<zvdf.nb_faces_bord(); num_face++)
  tab_d_equiv_[num_face] = zvdf.dist_norm_bord(num_face);     */
  return 1;
 
}