Perte_Charge_Reguliere_VDF_Face.cpp

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#include <Perte_Charge_Reguliere_VDF_Face.h>
#include <Domaine_VDF.h>
#include <Sous_Domaine.h>
#include <Champ_Face_VDF.h>
#include <Fluide_Incompressible.h>
#include <Probleme_base.h>
#include <Champ_Uniforme.h>
 
Implemente_instanciable(Perte_Charge_Reguliere_VDF_Face,"Perte_Charge_Reguliere_VDF_Face",Perte_Charge_VDF_Face);
 
 
Sortie& Perte_Charge_Reguliere_VDF_Face::printOn(Sortie& s ) const
{
  return s << que_suis_je() ;
}
 
 
Entree& Perte_Charge_Reguliere_VDF_Face::readOn(Entree& s )
{
  Perte_Charge_Reguliere::lire_donnees(s);
  Nom nom_sous_domaine;
  s >> nom_sous_domaine;
  Cerr << " nom du sous domaine " << nom_sous_domaine << finl ;
  remplir_num_faces(nom_sous_domaine);
  return s ;
}
 
 
/////////////////////////////////////////////////////////////////////
//
//                    Implementation des fonctions
//
//               de la classe Perte_Charge_Reguliere_VDF_Face
//
////////////////////////////////////////////////////////////////////
 
void Perte_Charge_Reguliere_VDF_Face::remplir_num_faces(Nom& nom_sous_domaine)
{
  const Domaine& le_domaine = equation().probleme().domaine();
  const Domaine_VDF& domaine_VDF = ref_cast(Domaine_VDF,equation().domaine_dis());
  const IntTab& elem_faces = domaine_VDF.elem_faces();
  const IntTab& face_voisins = domaine_VDF.face_voisins();
  const DoubleVect& volumes = domaine_VDF.volumes();
  const DoubleTab& xv = domaine_VDF.xv() ;
  const Sous_Domaine& le_sous_domaine = le_domaine.ss_domaine(nom_sous_domaine);
  int nb_poly_ss_domaine = le_sous_domaine.nb_elem_tot();
  int k = direction_perte_charge();
  DoubleVect xv_(dimension) ;
  int dir_a_faire ;
  int face_associee,nfac;
  int num_poly;
  num_faces.resize(nb_poly_ss_domaine*6);
  corr_front_ss.resize(nb_poly_ss_domaine*6);
 
  corr_front_ss = 1. ;
 
  nfac = 0 ;
 
 
  IntVect num_loc(domaine_VDF.nb_elem_tot());
  num_loc = -1;
  int num_elem,num_face;
  for (num_elem=0; num_elem<nb_poly_ss_domaine; num_elem++)
    num_loc[le_sous_domaine(num_elem)] = num_elem;
 
  for (int direction = 0; direction<dimension; direction++)
    {
      Cerr << " Perte_Charge_Reguliere_VDF_Face::remplir num_face en direction " << direction << finl ;
 
      if ((direction ==  k) || (dir[direction] == 1 ))
        {
          dir_a_faire = k ;
          if (dir[direction] == 1 ) dir_a_faire = direction ;
          for (num_elem=0; num_elem<nb_poly_ss_domaine; num_elem++)
            {
              num_poly = le_sous_domaine(num_elem);
              num_face =  elem_faces(num_poly,dir_a_faire);
              num_faces[nfac++] = num_face;
              for (int ifa=0; ifa<dimension; ifa++) xv_(ifa)= xv(num_face,ifa) ;
              corr_front_ss[nfac-1] *= correction_direction( xv_ , dir_a_faire );
 
              int num_poly_vois0 = face_voisins(num_face,0);
              if (num_poly_vois0 != -1)
                if (num_loc[num_poly_vois0] == -1)  // le poly voisin n'est pas dans la sous_domaine
                  {
                    corr_front_ss[nfac-1]*= volumes(num_poly)/(volumes(num_poly)+volumes(num_poly_vois0)) ;
                  }
              face_associee = elem_faces(num_poly,dir_a_faire+dimension);
              int num_poly_vois1 = face_voisins(face_associee,1);
              if (num_poly_vois1 != -1)
                {
                  if (num_loc[num_poly_vois1] == -1)  // le poly voisin n'est pas dans la sous_domaine
                    {
                      num_faces[nfac++] = face_associee;
                      for (int ifa=0; ifa<dimension; ifa++) xv_(ifa) = xv(face_associee,ifa) ;
                      corr_front_ss[nfac-1] *= correction_direction( xv_, dir_a_faire);
                      corr_front_ss[nfac-1] *= volumes(num_poly)/(volumes(num_poly)+volumes(num_poly_vois1)) ;
                    }
                }
              else
                {
                  num_faces[nfac++]=face_associee;
                }
            }
        }
    }
  num_faces.resize(nfac);
  corr_front_ss.resize(nfac);
 
}
 
DoubleTab& Perte_Charge_Reguliere_VDF_Face::ajouter_(const DoubleTab& inco,DoubleTab& resu) const
{
 
  const Domaine_VDF& domaine_VDF = le_dom_VDF.valeur();
  const IntTab& face_voisins = domaine_VDF.face_voisins();
  const DoubleVect& volumes_entrelaces = domaine_VDF.volumes_entrelaces();
  const IntTab& elem_faces = domaine_VDF.elem_faces();
  const DoubleVect& porosite_surf = equation().milieu().porosite_face();
  const DoubleTab& vit = la_vitesse->valeurs();
  int ndeb_faces_int = domaine_VDF.premiere_face_int();
  // on prend nu et non mu
  const Champ_Don_base& nu = le_fluide->viscosite_cinematique();
 
 
  double d_visco=-1;
  int l_visco_unif=0;
 
  if (sub_type(Champ_Uniforme,nu))
    {
      const Champ_Uniforme& ch_nu = ref_cast(Champ_Uniforme,nu);
      d_visco = ch_nu.valeurs()(0,0);
      l_visco_unif = 1;
    }
 
  {
    int nb_faces,numfa;
 
    double Cf,CK,U,U_abs,Reynolds;
    const DoubleTab& visco = nu.valeurs();
    {
      nb_faces = num_faces.size();
      for (int i=0; i<nb_faces; i++)
        {
          numfa = num_faces[i];
          U = inco[numfa];
          U_abs = std::fabs(vit[numfa]);
 
          if (!l_visco_unif)
            {
              if (numfa < ndeb_faces_int)
                {
                  int n0 = face_voisins(numfa,0);
                  if (n0 != -1)
                    d_visco =  visco[n0];
                  else
                    d_visco = visco[face_voisins(numfa,1)];
                }
              else
                d_visco = 0.5*(visco[face_voisins(numfa,0)]+visco[face_voisins(numfa,1)]);
 
            }
          if (couronne_tube == 1)
            {
              if (vit!=inco)
                {
                  Cerr<<"not implemented " <<finl;
                  exit();
                }
              double U_res=0.,vit1,vit2,div,corr_sign=1.0;
              int ori,el,fa1,fa2,fa3,fa4 ;
              // modifications ajoutees par fabio :
              ori = domaine_VDF.orientation(numfa);
              vit1 = 0;
              vit2 = 0;
              div = 4.;
              for (int ind=0; ind <2; ind++)
                {
                  el = face_voisins(numfa,ind);
                  if (el!=-1)
                    {
                      fa1 = elem_faces(el,(ori+1));
                      fa2 = elem_faces(el,(ori+1+dimension)%(2*dimension));
                      vit1 += vit[fa1] + vit[fa2] ;
                      if (dimension == 3)
                        {
                          fa3 = elem_faces(el,(ori+2));
                          fa4 = elem_faces(el,(ori+2+dimension)%(2*dimension));
                          vit2 += vit[fa3] + vit[fa4];
                        }
                    }
                  else div = 2.;
                }
              vit1 = vit1/div;
              U_res = U*U+vit1*vit1;
              if (dimension == 3)
                {
                  vit2 = vit2/div;
                  U_res += vit2*vit2;
                }
              // U_res = sqrt(U_res)/rasu();
              U_res = sqrt(U_res);
              Reynolds = U_res*d()/d_visco;
              if (!Cf_utilisateur)
                Cf = calculer_Cf_blasius(Reynolds);
              else
                Cf = CF();
              CK = -0.5*Cf/D();
              if (U != 0)
                {
                  corr_sign = U/std::fabs(U);
                }
              resu[numfa] += CK*U_res*U_res*volumes_entrelaces[numfa]*porosite_surf[numfa]*corr_front_ss[i]*corr_sign;
            }
          else
            {
              Reynolds = U_abs*d()/d_visco;
              if (!Cf_utilisateur)
                Cf = calculer_Cf_blasius(Reynolds);
              else
                Cf = CF();
              CK = -0.5*Cf/D();
              resu[numfa] += CK*U*U_abs*volumes_entrelaces[numfa]*porosite_surf[numfa]*corr_front_ss[i];
            }
        }
    }
 
  }
  return resu;
}