Loi_Paroi_Nu_Impose_VDF.cpp

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#include <Loi_Paroi_Nu_Impose_VDF.h>
#include <Champ_Uniforme.h>
#include <Champ_Uniforme_Morceaux.h>
#include <Champ_Fonc_Tabule.h>
#include <Domaine_Cl_VDF.h>
#include <Dirichlet_paroi_fixe.h>
#include <Dirichlet_paroi_defilante.h>
#include <Neumann_paroi.h>
#include <Debog.h>
#include <Fluide_base.h>
#include <Convection_Diffusion_std.h>
#include <Probleme_base.h>
#include <EcrFicPartage.h>
#include <Modele_turbulence_scal_base.h>
 
Implemente_instanciable(Loi_Paroi_Nu_Impose_VDF,"Loi_Paroi_Nu_Impose_VDF",Paroi_scal_hyd_base_VDF);
 
 
//     printOn()
/////
 
Sortie& Loi_Paroi_Nu_Impose_VDF::printOn(Sortie& s) const
{
  return s << que_suis_je() << " " << le_nom();
}
 
//// readOn
//
 
Entree& Loi_Paroi_Nu_Impose_VDF::readOn(Entree& s)
{
 
  // Definition des mots-cles
  Motcles les_mots(2);
  les_mots[0] = "nusselt";
  les_mots[1] = "diam_hydr";
  int nusselt_ok=-1;
  // Lecture et interpretation
  Motcle motlu, accolade_fermee="}", accolade_ouverte="{";
  s >> motlu;
  assert(motlu==accolade_ouverte);
  s >> motlu;
  if(motlu == accolade_ouverte)
    {
      // on passe l'accolade ouvrante
      s >> motlu;
    }
  while (motlu != accolade_fermee)
    {
      int rang=les_mots.search(motlu);
      switch(rang)
        {
        case 0 :   // nusselt expression
          {
            nusselt_ok=0;
            Nom tmp;
            s >> tmp;
            Cerr << "Lecture et interpretation de la fonction " << tmp << " ... ";
            nusselt.setNbVar(5+dimension);
            nusselt.setString(tmp);
            nusselt.addVar("Re");
            nusselt.addVar("Pr");
            nusselt.addVar("t");
            nusselt.addVar("x");
            if (dimension>1)
              nusselt.addVar("y");
            if (dimension>2)
              nusselt.addVar("z");
            nusselt.addVar("Dh");
            nusselt.addVar("Lambda");
            nusselt.parseString();
            break;
          }
        case 1: // diam_hydr
          s >> diam_hydr;
          break;
        default : // non compris
          Cerr << "Mot cle \"" << motlu << "\" non compris lors de la lecture d'un "
               << que_suis_je() << finl;
          Process::exit();
        }
      s >> motlu;
    }
 
  // Verification de la coherence
  if (nusselt_ok==-1)
    {
      Cerr << "Il faut definir l'expression nusselt(Re,Pr,x,y,z,Dh)" << finl;
      Process::exit();
    }
 
  if (diam_hydr->nb_comp()!=1)
    {
      Cerr << "Il faut definir le champ diam_hydr a une composante" << finl;
      Process::exit();
    }
  return s;
}
 
 
/////////////////////////////////////////////////////////////////////////
//
//    Implementation des fonctions de la classe Loi_Paroi_Nu_Impose_VDF
//
////////////////////////////////////////////////////////////////////////
 
int  Loi_Paroi_Nu_Impose_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();
  const Equation_base& eqn_hydr = mon_modele_turb_scal->equation().probleme().equation(0);
  const DoubleTab& vitesse = eqn_hydr.inconnue().valeurs();
  const Fluide_base& le_fluide = ref_cast(Fluide_base,eqn_hydr.milieu());
  const Champ_Don_base& ch_visco_cin = le_fluide.viscosite_cinematique();
  const IntVect& orientation = domaine_VDF.orientation();
  const DoubleTab& xv=domaine_VDF.xv() ;                   // centres de gravite des faces
  const IntTab& elem_faces = domaine_VDF.elem_faces();
 
  DoubleVect pos(dimension);
 
  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) && (local_min_vect(tab_visco)<DMINFLOAT))
    //   on ne doit pas changer tab_visco ici !
    {
      Cerr << "In Loi_Paroi_Nu_Impose_VDF::calculer_scal : visco = " << tab_visco.local_min_vect() << " <= 0 ? " << finl;
      throw;
    }
  //tab_visco+=DMINFLOAT;
 
  bool dh_constant=sub_type(Champ_Uniforme,diam_hydr.valeur())?true:false;
  double dh_valeur=diam_hydr->valeurs()(0,0);
 
 
 
  int ndeb,nfin;
  int elem;
  double d_visco;
 
  //  const Convection_Diffusion_std& eqn = mon_modele_turb_scal->equation();
  const Champ_Don_base& alpha = le_fluide.diffusivite();
 
  // 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
 
      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());
          ndeb = le_bord.num_premiere_face();
          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++)
            {
              elem = face_voisins(num_face,0);
              if (elem == -1)
                elem = face_voisins(num_face,1);
              if (l_unif)
                d_visco = visco;
              else
                d_visco = tab_visco[elem];
 
              double d_alpha=0.;
              if (sub_type(Champ_Uniforme,alpha))
                d_alpha = alpha.valeurs()(0,0);
              else
                {
                  if (alpha.nb_comp()==1)
                    d_alpha = alpha.valeurs()(elem);
                  else
                    d_alpha = alpha.valeurs()(elem,0);
                }
              double Pr = d_visco/d_alpha;
 
              // On calcule la vitesse debitante comme etant la moyenne des vitesses presentes sur les faces orthogonales a la face courante du bord.
              int ori = orientation(num_face);
              int face1 = elem_faces(elem,(ori+1));
              int face2 = elem_faces(elem,(ori+1+dimension)%(2*dimension));
              double Ud = 0.5*(vitesse(face1)+vitesse(face2));
              Ud *= Ud;
              if (dimension==3)
                {
                  face1 = elem_faces(elem,(ori+2));
                  face2 = elem_faces(elem,(ori+2+dimension)%(2*dimension));
                  double tmp =0.5*(vitesse(face1)+vitesse(face2));
                  Ud += tmp*tmp;
                }
 
              Ud=sqrt(Ud);
 
              // Calcul de la position
              for (int i=0; i<dimension; i++)
                pos[i]=xv(num_face,i);
 
              // Calcul du diametre hydraulique
              if (!dh_constant)
                {
                  dh_valeur=diam_hydr->valeur_a_compo(pos,0);
                }
 
              double Re=Ud*dh_valeur/d_visco;
 
              nusselt.setVar("Re",Re);
              nusselt.setVar("Pr",Pr);
              nusselt.setVar("Dh",dh_valeur);
              //nusselt->setVar("Lambda",d_alpha);
              //        nusselt->setVar("t",Pr);
              for (int i=0; i<dimension; i++)
                {
                  nusselt.setVar(3+i,pos[i]);
                }
              double Nu = nusselt.eval();
 
              // 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 !).
              int global_face=num_face;
              int local_face=domaine_VDF.front_VF(boundary_index).num_local_face(global_face);
              equivalent_distance_[boundary_index](local_face)=dh_valeur/Nu;
              //Cout << "pos = " << pos[0] << " " << pos[1] << finl;
              //Cout << "Nu = " << Nu << finl;
              //Cout << "diam = " << dh_valeur << finl;
              //Cout << "tab_d_equiv_ = " << tab_d_equiv_[num_face] << finl;
            }
        }
    }
  return 1;
}
 
 
 
void Loi_Paroi_Nu_Impose_VDF::imprimer_nusselt(Sortie&) const
{
  const Domaine_VDF& domaine_VDF = ref_cast(Domaine_VDF, le_dom_dis_.valeur());
  const IntTab& face_voisins = domaine_VDF.face_voisins();
  int ndeb,nfin,elem;
  const Convection_Diffusion_std& eqn = mon_modele_turb_scal->equation();
  const Equation_base& eqn_hydr = eqn.probleme().equation(0);
  const Fluide_base& le_fluide = ref_cast(Fluide_base, eqn_hydr.milieu());
  const Champ_Don_base& conductivite = le_fluide.conductivite();
  const DoubleTab& temperature = eqn.probleme().equation(1).inconnue().valeurs();
 
  EcrFicPartage Nusselt;
  ouvrir_fichier_partage(Nusselt,"Nusselt");
 
  bool dh_constant=sub_type(Champ_Uniforme,diam_hydr.valeur())?true:false;
  double dh_valeur=diam_hydr->valeurs()(0,0);
  DoubleVect pos(dimension);
 
  for (int n_bord=0; n_bord<domaine_VDF.nb_front_Cl(); n_bord++)
    {
      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 Domaine_Cl_VDF& domaine_Cl_VDF_th = ref_cast(Domaine_Cl_VDF, eqn.probleme().equation(1).domaine_Cl_dis());
          const Cond_lim& la_cl_th = domaine_Cl_VDF_th.les_conditions_limites(n_bord);
          const Front_VF& le_bord = ref_cast(Front_VF,la_cl->frontiere_dis());
 
          //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);
 
          if ( (sub_type(Neumann_paroi,la_cl_th.valeur())))
            {
              const Neumann_paroi& la_cl_neum = ref_cast(Neumann_paroi,la_cl_th.valeur());
 
              if(je_suis_maitre())
                {
                  Nusselt << finl;
                  Nusselt << "Bord " << le_bord.le_nom() << finl;
                  if (dimension == 2)
                    {
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "\tFace a\t\t\t\t|" << finl;
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "X\t\t| Y\t\t\t| dist. carac. (m)\t| Nusselt (local)\t| h (Conv. W/m2/K)\t| Tf cote paroi (K)\t| Tparoi equiv.(K)" << finl;
                      Nusselt << "----------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------" << finl;
                    }
                  if (dimension == 3)
                    {
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "\tFace a\t\t\t\t\t\t\t|" << finl;
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "X\t\t| Y\t\t\t| Z\t\t\t| dist. carac. (m)\t| Nusselt (local)\t| h (Conv. W/m2/K)\t| Tf cote paroi (K)\t| Tparoi equiv.(K)" << finl;
                      Nusselt <<        "----------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------" << finl;
                    }
                }
              ndeb = le_bord.num_premiere_face();
              nfin = ndeb + le_bord.nb_faces();
              for (int num_face=ndeb; num_face<nfin; num_face++)
                {
                  // Calcul de la position
                  for (int i=0; i<dimension; i++)
                    pos[i]=domaine_VDF.xv(num_face,i);
 
                  // Calcul du diametre hydraulique
                  if (!dh_constant)
                    dh_valeur=diam_hydr->valeur_a_compo(pos,0);
 
                  double x=domaine_VDF.xv(num_face,0);
                  double y=domaine_VDF.xv(num_face,1);
                  double lambda;
 
                  elem = face_voisins(num_face,0);
                  if (elem == -1)
                    elem = face_voisins(num_face,1);
                  if (sub_type(Champ_Uniforme,conductivite))
                    lambda = conductivite.valeurs()(0,0);
                  else
                    {
                      if (conductivite.nb_comp()==1)
                        lambda = conductivite.valeurs()(elem);
                      else
                        lambda = conductivite.valeurs()(elem,0);
                    }
 
                  if (dimension == 2)
                    Nusselt << x << "\t| " << y;
                  if (dimension == 3)
                    {
                      double z=domaine_VDF.xv(num_face,2);
                      Nusselt << x << "\t| " << y << "\t| " << z;
                    }
 
                  int global_face=num_face;
                  int local_face=domaine_VDF.front_VF(boundary_index).num_local_face(global_face);
 
                  double flux = la_cl_neum.flux_impose(num_face-ndeb);
                  double tparoi = temperature(elem)+flux/lambda*equivalent_distance_[boundary_index](local_face);
 
                  Nusselt << "\t| " << equivalent_distance_[boundary_index](local_face) << "\t| " << dh_valeur/equivalent_distance_[boundary_index](local_face) << "\t| "
                          << lambda/equivalent_distance_[boundary_index](local_face) << "\t| " << temperature(elem) << "\t|" << tparoi << finl;
                }
            }
          // fin de condition limite flux impose
          else
            {
              if(je_suis_maitre())
                {
                  Nusselt << finl;
                  Nusselt << "Bord " << le_bord.le_nom() << finl;
                  if (dimension == 2)
                    {
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "\tFace a\t\t\t\t|" << finl;
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "X\t\t| Y\t\t\t| dist. carac. (m)\t| Nusselt (local)\t| h (Conv. W/m2/K)\t| Tf cote paroi (K)" << finl;
                      Nusselt << "----------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------" << finl;
                    }
                  if (dimension == 3)
                    {
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "\tFace a\t\t\t\t\t\t\t|" << finl;
                      Nusselt << "----------------------------------------------------------------------------------------------------------------------------------------" << finl;
                      Nusselt << "X\t\t| Y\t\t\t| Z\t\t\t| dist. carac. (m)\t| Nusselt (local)\t| h (Conv. W/m2/K)\t| Tf cote paroi (K)" << finl;
                      Nusselt <<        "----------------|-----------------------|-----------------------|-----------------------|-----------------------|-----------------------" << finl;
                    }
                }
              ndeb = le_bord.num_premiere_face();
              nfin = ndeb + le_bord.nb_faces();
              for (int num_face=ndeb; num_face<nfin; num_face++)
                {
                  // Calcul de la position
                  for (int i=0; i<dimension; i++)
                    pos[i]=domaine_VDF.xv(num_face,i);
 
                  // Calcul du diametre hydraulique
                  if (!dh_constant)
                    dh_valeur=diam_hydr->valeur_a_compo(pos,0);
 
                  double x=domaine_VDF.xv(num_face,0);
                  double y=domaine_VDF.xv(num_face,1);
                  double lambda;
                  elem = face_voisins(num_face,0);
                  if (elem == -1)
                    elem = face_voisins(num_face,1);
                  if (sub_type(Champ_Uniforme,conductivite))
                    lambda = conductivite.valeurs()(0,0);
                  else
                    {
                      if (conductivite.nb_comp()==1)
                        lambda = conductivite.valeurs()(elem);
                      else
                        lambda = conductivite.valeurs()(elem,0);
                    }
                  if (dimension == 2)
                    Nusselt << x << "\t| " << y;
                  if (dimension == 3)
                    {
                      double z=domaine_VDF.xv(num_face,2);
                      Nusselt << x << "\t| " << y << "\t| " << z;
                    }
                  int global_face=num_face;
                  int local_face=domaine_VDF.front_VF(boundary_index).num_local_face(global_face);
                  Nusselt << "\t| " << equivalent_distance_[boundary_index](local_face) << "\t| "
                          << dh_valeur/equivalent_distance_[boundary_index](local_face) << "\t| "
                          << lambda/equivalent_distance_[boundary_index](local_face) << "\t| " << temperature(elem) << finl;
                }
            }
          Nusselt.syncfile();
        }
    }
  if(je_suis_maitre())
    Nusselt << finl << finl;
  Nusselt.syncfile();
}