Champ_Q1_EF.cpp

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#include <Champ_Q1_EF.h>
#include <Domaine_EF.h>
#include <Domaine.h>
#include <Equation_base.h>
#include <distances_EF.h>
#include <Dirichlet_paroi_fixe.h>
#include <Dirichlet_paroi_defilante.h>
#include <Equation_base.h>
#include <Fluide_base.h>
#include <Champ_Uniforme.h>
#include <Modele_turbulence_hyd_base.h>
#include <Debog.h>
 
Implemente_instanciable(Champ_Q1_EF,"Champ_Q1_EF",Champ_Inc_Q1_base);
 
Sortie& Champ_Q1_EF::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Champ_Q1_EF::readOn(Entree& s)
{
  lire_donnees(s) ;
  return s ;
}
 
const Domaine_EF& Champ_Q1_EF::domaine_EF() const
{
  return ref_cast(Domaine_EF, le_dom_VF.valeur());
}
 
int Champ_Q1_EF::imprime(Sortie& os, int ncomp) const
{
  const Domaine_dis_base& domaine_dis = domaine_dis_base();
  const Domaine& domaine = domaine_dis.domaine();
  const DoubleTab& coord = domaine.coord_sommets();
  const int nb_som = domaine.nb_som();
  const DoubleTab& val = valeurs();
  int som;
  os << nb_som << finl;
  for (som = 0; som < nb_som; som++)
    {
      if (dimension == 3)
        os << coord(som, 0) << " " << coord(som, 1) << " " << coord(som, 2) << " ";
      if (dimension == 2)
        os << coord(som, 0) << " " << coord(som, 1) << " ";
      if (nb_compo_ == 1)
        os << val(som) << finl;
      else
        os << val(som, ncomp) << finl;
    }
  os << finl;
  Cout << "Champ_Q1_EF::imprime FIN >>>>>>>>>> " << finl;
  return 1;
}
 
void Champ_Q1_EF::gradient(DoubleTab& gradient_elem)
{
  // Compute the velocity gradient for the vorticity computation
  // Order-1 gradient (mean value within an element)
  // Order 1 gradient (mean value within an element)
  const Domaine_EF& domaine_EF_ = domaine_EF();
  const DoubleTab& vitesse = equation().inconnue().valeurs();
  const IntTab& elems = domaine_EF_.domaine().les_elems();
  int nb_som_elem = domaine_EF_.domaine().nb_som_elem();
  int nb_elems = domaine_EF_.domaine().nb_elem_tot();
  const DoubleVect& volume_thilde = domaine_EF_.volumes_thilde();
  const DoubleTab& Bij_thilde = domaine_EF_.Bij_thilde();
 
  assert(gradient_elem.dimension_tot(0) == nb_elems);
  assert(gradient_elem.dimension(1) == dimension); // line
  assert(gradient_elem.dimension(2) == dimension); // column
 
  operator_egal(gradient_elem, 0.); // Real space only
 
  for (int num_elem = 0; num_elem < nb_elems; num_elem++)
    {
      for (int a = 0; a < dimension; a++) // component number 1
        {
          for (int b = 0; b < dimension; b++) // component number 2
            {
              for (int j = 0; j < nb_som_elem; j++)
                {
                  int s = elems(num_elem, j);
                  gradient_elem(num_elem, a, b) += vitesse(s, a) * Bij_thilde(num_elem, j, b);
                }
              gradient_elem(num_elem, a, b) /= volume_thilde(num_elem);
            }
        }
    }
}
 
void Champ_Q1_EF::cal_rot_ordre1(DoubleTab& vorticite)
{
  const Domaine_EF& domaine_EF_ = domaine_EF();
  int nb_elems = domaine_EF_.domaine().nb_elem_tot();
 
  DoubleTab gradient_elem(0, dimension, dimension);
  // the array is initialized in the gradient() method:
  domaine_EF_.domaine().creer_tableau_elements(gradient_elem, RESIZE_OPTIONS::NOCOPY_NOINIT);
  gradient(gradient_elem);
  Debog::verifier("apres calcul gradient", gradient_elem);
  int num_elem;
  switch(dimension)
    {
    case 2:
      {
        for (num_elem = 0; num_elem < nb_elems; num_elem++)
          {
            vorticite(num_elem) = gradient_elem(num_elem, 1, 0) - gradient_elem(num_elem, 0, 1);
          }
      }
      break;
    case 3:
      {
        for (num_elem = 0; num_elem < nb_elems; num_elem++)
          {
            vorticite(num_elem, 0) = gradient_elem(num_elem, 2, 1) - gradient_elem(num_elem, 1, 2);
            vorticite(num_elem, 1) = gradient_elem(num_elem, 0, 2) - gradient_elem(num_elem, 2, 0);
            vorticite(num_elem, 2) = gradient_elem(num_elem, 1, 0) - gradient_elem(num_elem, 0, 1);
          }
      }
    }
  Debog::verifier("apres calcul vort", vorticite);
  return;
}
 
void Champ_Q1_EF::calcul_y_plus(const Domaine_Cl_EF& domaine_Cl_EF, DoubleTab& y_plus)
{
  // Initialize the y_plus field with a negative value,
  // so that when visualizing the field near the wall,
  // one only needs to remove the negative values and only
  // the wall values remain.
 
  int ndeb, nfin, elem, l_unif;
  double norm_tau, u_etoile, norm_v = 0, dist, d_visco = 0, visco = 1.;
  y_plus = -1.;
 
  const Domaine_EF& domaine_EF = ref_cast(Domaine_EF, le_dom_VF.valeur());
  const IntTab& face_voisins = domaine_EF.face_voisins();
  int nsom = domaine_EF.nb_som_face();
  int nsom_elem = domaine_EF.domaine().nb_som_elem();
  int nb_nodes_free = nsom_elem - nsom;
  const IntTab& elems=domaine_EF.domaine().les_elems() ;
  const Equation_base& eqn_hydr = equation();
  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 DoubleTab& tab_visco = ch_visco_cin.valeurs();
 
  if (sub_type(Champ_Uniforme, ch_visco_cin))
    {
      visco = tab_visco(0, 0);
      l_unif = 1;
    }
  else
    l_unif = 0;
 
  DoubleTab yplus_faces(1, 1); // will contain yplus values if available
  int yplus_already_computed = 0; // flag
 
  const RefObjU& modele_turbulence = eqn_hydr.get_modele(TURBULENCE);
  if (modele_turbulence && sub_type(Modele_turbulence_hyd_base, modele_turbulence.valeur()))
    {
      const Modele_turbulence_hyd_base& mod_turb = ref_cast(Modele_turbulence_hyd_base, modele_turbulence.valeur());
      const Turbulence_paroi_base& loipar = mod_turb.loi_paroi();
      if (loipar.use_shear())
        {
          yplus_faces.resize(domaine_EF.nb_faces_tot());
          yplus_faces.ref(loipar.tab_d_plus());
          yplus_already_computed = 1;
        }
    }
 
  ArrOfDouble vit(dimension);
  ArrOfDouble val(dimension);
  ArrOfDouble vit_face(dimension);
  ArrOfInt nodes_face(nsom);
 
  for (int n_bord = 0; n_bord < domaine_EF.nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = domaine_Cl_EF.les_conditions_limites(n_bord);
 
      if (sub_type(Dirichlet_paroi_fixe, la_cl.valeur()))
        {
          const Front_VF& le_bord = ref_cast(Front_VF, la_cl->frontiere_dis());
          // Loop on real faces
          ndeb = 0;
          nfin = le_bord.nb_faces_tot();
 
          for (int ind_face = ndeb; ind_face < nfin; ind_face++)
            {
 
              int num_face=le_bord.num_face(ind_face);
              if (face_voisins(num_face, 0) != -1)
                elem = face_voisins(num_face, 0);
              else
                elem = face_voisins(num_face, 1);
 
              if (yplus_already_computed)
                {
                  // y+ is only defined on faces so we take the face value to put in the element
                  y_plus(elem) = yplus_faces(num_face);
                }
              else
                {
                  vit_face=0.;
                  nodes_face=0;
                  for(int jsom=0; jsom<nsom; jsom++)
                    {
                      int num_som = domaine_EF.face_sommets(num_face, jsom);
                      nodes_face[jsom] = num_som;
                      for(int comp=0; comp<dimension; comp++) vit_face[comp]+=vitesse(num_som,comp)/nsom;
                    }
                  vit=0.;
                  // Loop on nodes: average velocity of nodes not belonging to the BC face
                  for (int i=0; i<nsom_elem; i++)
                    {
                      int node=elems(elem,i);
                      int IOK = 1;
                      for(int jsom=0; jsom<nsom; jsom++)
                        if (nodes_face[jsom] == node) IOK=0;
                      // Le noeud contribue
                      if (IOK)
                        for (int j=0; j<dimension; j++)
                          vit[j]+=(vitesse(node,j)-vit_face[j])/nb_nodes_free; // subtracts any possible sliding velocity
                    }
                  norm_v = norm_vit_lp(vit,num_face,domaine_EF,val);
                  dist = distance_face_elem(num_face,elem,domaine_EF);
                  dist *= 2.;
                  if (l_unif)
                    d_visco = visco;
                  else
                    d_visco = tab_visco[elem];
 
                  // PQ : 01/10/03 : corrections with respect to the initial version
                  norm_tau = d_visco * norm_v / dist;
 
                  u_etoile = sqrt(norm_tau);
                  y_plus(elem) = dist * u_etoile / d_visco;
 
                } // else yplus already computed
            } // loop on faces
        } // End fixed wall
    } // End loop over boundaries
}