Op_Conv_Muscl_old_VEF_Face.cpp

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#include <Op_Conv_Muscl_old_VEF_Face.h>
#include <Champ_P1NC.h>
#include <Neumann_sortie_libre.h>
#include <Periodique.h>
 
Implemente_instanciable_sans_constructeur(Op_Conv_Muscl_old_VEF_Face,"Op_Conv_Muscl_old_VEF_P1NC",Op_Conv_VEF_base);
// XD convection_muscl_old convection_deriv muscl_old NO_BRACE Only for VEF discretization.
 
Sortie& Op_Conv_Muscl_old_VEF_Face::printOn(Sortie& s ) const
{
  return s << que_suis_je() ;
}
 
Entree& Op_Conv_Muscl_old_VEF_Face::readOn(Entree& s )
{
  return s ;
}
 
//
//   Member functions of class Op_Conv_Muscl_old_VEF_Face
//
 
 
 
//////////////////////////////////////////////////////////////
//   MUSCL functions
////////////////////////////////////////////////////////////////
 
#define sgn(x) (x>0) ? 1:-1
inline double minmod(double grad1, double grad2, double gradc)
{
  int s1=sgn(grad1);
  int s2=sgn(grad2);
  int sc=sgn(gradc);
  double gradlim;
  if ((s1==s2) && (s2==sc))
    {
      gradlim=std::min(std::fabs(grad1), std::fabs(grad2));
      gradlim=std::min(std::fabs(gradlim), std::fabs(gradc));
      return sc*gradlim;
    }
  else
    return 0;
}
 
 
 
////////////////////////////////////////////////////////////////////
//
//                      Implementation of member functions
//
//                   of class Op_Conv_Muscl_old_VEF_Face
//
////////////////////////////////////////////////////////////////////
 
 
DoubleTab& Op_Conv_Muscl_old_VEF_Face::ajouter(const DoubleTab& transporte,
                                               DoubleTab& resu) const
{
  const Domaine_Cl_VEF& domaine_Cl_VEF = la_zcl_vef.valeur();
  const Domaine_VEF& domaine_VEF = ref_cast(Domaine_VEF, le_dom_vef.valeur());
  const Champ_Inc_base& la_vitesse=vitesse_.valeur();
  const DoubleVect& porosite_face = equation().milieu().porosite_face();
  const IntTab& elem_faces = domaine_VEF.elem_faces();
  const DoubleTab& face_normales = domaine_VEF.face_normales();
  const auto& facette_normales = domaine_VEF.facette_normales();
  const Domaine& domaine = domaine_VEF.domaine();
 
  const int nfa7 = domaine_VEF.type_elem().nb_facette();
 
  const int nb_elem_tot = domaine_VEF.nb_elem_tot();
  const IntVect& rang_elem_non_std = domaine_VEF.rang_elem_non_std();
  const IntTab& face_voisins = domaine_VEF.face_voisins();
  const DoubleVect& volumes = domaine_VEF.volumes();
 
  const DoubleTab& normales_facettes_Cl = domaine_Cl_VEF.normales_facettes_Cl();
  int premiere_face_int = domaine_VEF.premiere_face_int();
  int nfac = domaine.nb_faces_elem();
  int nsom = domaine.nb_som_elem();
  int nb_som_facette = domaine.type_elem()->nb_som_face();
  double inverse_nb_som_facette=1./nb_som_facette;
  DoubleTab& vecteur_face_facette = ref_cast_non_const(Domaine_VEF,domaine_VEF).vecteur_face_facette();
 
  // For convection treatment, we distinguish standard polyhedra
  // which do not "see" boundary conditions, from non-standard
  // polyhedra which have at least one boundary face.
  // A standard polyhedron has n facets on which the convection
  // scheme is applied.
  // For a non-standard polyhedron with Dirichlet boundary conditions,
  // some facets are carried by boundary faces.
  // In short, for a polyhedron, convection treatment depends
  // on the type (triangle, tetrahedron ...) and the number of Dirichlet faces.
 
  const Elem_VEF_base& type_elemvef= domaine_VEF.type_elem();
  int istetra=0;
  Nom nom_elem=type_elemvef.que_suis_je();
  if ((nom_elem=="Tetra_VEF")||(nom_elem=="Tri_VEF"))
    istetra=1;
 
  double psc;
  int poly,face_adj,fa7,i,j,n_bord;
  int num_face, rang ,itypcl;
  int num10,num20,num_som;
  int ncomp_ch_transporte;
  if (transporte.nb_dim() == 1)
    ncomp_ch_transporte=1;
  else
    ncomp_ch_transporte= transporte.dimension(1);
 
  // Special treatment for periodic faces
  int nb_faces_perio = 0;
  for (n_bord=0; n_bord<domaine_VEF.nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = domaine_Cl_VEF.les_conditions_limites(n_bord);
      if (sub_type(Periodique,la_cl.valeur()))
        {
          const Front_VF& le_bord = ref_cast(Front_VF,la_cl->frontiere_dis());
          int num1 = le_bord.num_premiere_face();
          int num2 = num1 + le_bord.nb_faces();
          for (num_face=num1; num_face<num2; num_face++)
            nb_faces_perio++;
        }
    }
 
  DoubleTab tab;
  if (ncomp_ch_transporte == 1)
    tab.resize(nb_faces_perio);
  else
    tab.resize(nb_faces_perio,ncomp_ch_transporte);
 
  nb_faces_perio=0;
  for (n_bord=0; n_bord<domaine_VEF.nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = domaine_Cl_VEF.les_conditions_limites(n_bord);
      if (sub_type(Periodique,la_cl.valeur()))
        {
          //          const Periodique& la_cl_perio = ref_cast(Periodique, la_cl.valeur());
          const Front_VF& le_bord = ref_cast(Front_VF,la_cl->frontiere_dis());
          int num1 = le_bord.num_premiere_face();
          int num2 = num1 + le_bord.nb_faces();
          for (num_face=num1; num_face<num2; num_face++)
            {
              if (ncomp_ch_transporte == 1)
                tab(nb_faces_perio) = resu(num_face);
              else
                for (int comp=0; comp<ncomp_ch_transporte; comp++)
                  tab(nb_faces_perio,comp) = resu(num_face,comp);
              nb_faces_perio++;
            }
        }
    }
 
  int fac=0,elem1,elem2,comp;
  int nb_faces_ = domaine_VEF.nb_faces();
  IntVect face(nfac);
 
  DoubleTab gradient_elem(nb_elem_tot,ncomp_ch_transporte,dimension);
  // (du/dx du/dy dv/dx dv/dy) per element
  DoubleTab gradient(0, ncomp_ch_transporte, dimension);
  domaine_VEF.creer_tableau_faces(gradient);
 
  // (du/dx du/dy dv/dx dv/dy) per face
  // gradient_elem=0.; already done by the constructor
 
  ///////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  Champ_P1NC::calcul_gradient(transporte,gradient_elem,domaine_Cl_VEF);
 
  // We have gradient_elem per element
 
  ////////////////////////////////////////////////////////////////////////////////////////////////////////
  // Minmod limitation
  //
  // Loop over faces
  //
  for (fac=0; fac< premiere_face_int; fac++)
    {
      for (comp=0; comp<ncomp_ch_transporte; comp++)
        for (i=0; i<dimension; i++)
          gradient(fac, comp, i)
          /* upwind: */= 0;
 
    } // end of the face loop
 
  for (; fac<nb_faces_; fac++)
    {
      elem1=face_voisins(fac,0);
      elem2=face_voisins(fac,1);
      double vol1=volumes(elem1);
      double vol2=volumes(elem2);
      double inverse_voltot=1./(vol1+vol2);
      for (comp=0; comp<ncomp_ch_transporte; comp++)
        for (i=0; i<dimension; i++)
          {
            double grad1=gradient_elem(elem1, comp, i);
            double grad2=gradient_elem(elem2, comp, i);
            double gradc=(vol1*grad1 + vol2*grad2)*inverse_voltot;
            gradient(fac, comp, i) = minmod(grad1, grad2, gradc);
          }
    } // end of the face loop
 
  gradient.echange_espace_virtuel();
 
 
  DoubleVect vs(dimension);
  DoubleVect vc(dimension);
  DoubleTab vsom(nsom,dimension);
  DoubleVect cc(dimension);
 
 
  const IntTab& KEL=type_elemvef.KEL();
 
  // Reset to zero the array used for
  // the computation of the stability time step
  fluent_ = 0;
 
  // Non-standard polyhedra are sorted in 2 groups in Domaine_VEF:
  //  - boundary and joint polyhedra
  //  - boundary and non-joint polyhedra
  // Polyhedra are processed in the order they appear
  // in the domain
 
  // loop over polyhedra
  const DoubleTab& vitesse_face=la_vitesse.valeurs();
 
  for (poly=0; poly<nb_elem_tot; poly++)
    {
 
      rang = rang_elem_non_std(poly);
      if (rang==-1)
        itypcl=0;
      else
        itypcl=domaine_Cl_VEF.type_elem_Cl(rang);
 
      // compute the face indices of the polyhedron
      for (face_adj=0; face_adj<nfac; face_adj++)
        face(face_adj)= elem_faces(poly,face_adj);
 
      for (j=0; j<dimension; j++)
        {
          vs(j) = vitesse_face(face(0),j)*porosite_face(face(0));
          for (i=1; i<nfac; i++)
            vs(j)+= vitesse_face(face(i),j)*porosite_face(face(i));
        }
      // compute velocity at the vertices of the polyhedra
      // Shape functions implemented in Champs_P1_impl or Champs_Q1_impl will be used
      if (istetra==1)
        {
          for (i=0; i<nsom; i++)
            for (j=0; j<dimension; j++)
              vsom(i,j) = vs[j] - dimension*vitesse_face(face[i],j)*porosite_face(face[i]);
        }
      else
        {
          // to be valid with hexahedra (slower to compute...)
          int ncomp;
          for (j=0; j<nsom; j++)
            {
              num_som = domaine.sommet_elem(poly,j);
              for (ncomp=0; ncomp<dimension; ncomp++)
                vsom(j,ncomp) = la_vitesse.valeur_a_sommet_compo(num_som,poly,ncomp);
            }
        }
 
 
      // compute vc (at the intersection of the 3 facets)
      type_elemvef.calcul_vc(face,vc,vs,vsom,vitesse(),itypcl,porosite_face);
 
      // Loop over facets of the non-standard polyhedron:
      for (fa7=0; fa7<nfa7; fa7++)
        {
          num10 = face(KEL(0,fa7));
          num20 = face(KEL(1,fa7));
          // facet normals
          if (rang==-1)
            for (i=0; i<dimension; i++)
              cc[i] = facette_normales(poly, fa7, i);
          else
            for (i=0; i<dimension; i++)
              cc[i] = normales_facettes_Cl(rang,fa7,i);
 
          // Apply the convection scheme to each vertex of the facet
          for (i=0; i<nb_som_facette; i++)
            {
              psc =0;
              if (i==nb_som_facette-1)
                {
                  // Treat the vertex coincident with the centroid of the polyhedron
                  for (j=0; j<dimension; j++)
                    psc += vc[j]*cc[j];
                }
              else
                {
                  // Treat the vertex or vertices that are also vertices of the polyhedron
                  for (j=0; j<dimension; j++)
                    psc+= vsom(KEL(i+2,fa7),j)*cc[j];
                }
              psc *= inverse_nb_som_facette;
 
              // Compute convmuscl (previously in a function that was not always inlined by the compiler)
              int comp2,amont,ii;
              double flux;
              if (psc >= 0)
                {
                  amont = num10;
                  fluent_(num20)  += psc;
                }
              else
                {
                  amont = num20;
                  fluent_(num10)  -= psc;
                }
              if (ncomp_ch_transporte == 1)
                {
                  flux = transporte(amont);
                  if (psc >= 0)
                    for (ii=0; ii<dimension; ii++)
                      flux += gradient(amont,0,ii)*vecteur_face_facette(poly,fa7,ii,0);
                  else
                    for (ii=0; ii<dimension; ii++)
                      flux += gradient(amont,0,ii)*vecteur_face_facette(poly,fa7,ii,1);
 
                  flux*=psc;
                  resu(num10) -= flux;
                  resu(num20) += flux;
                }
              else
                for (comp2=0; comp2<ncomp_ch_transporte; comp2++)
                  {
                    flux = transporte(amont,comp2);
                    if (psc >= 0)
                      for (ii=0; ii<dimension; ii++)
                        flux += gradient(amont,comp2,ii)*vecteur_face_facette(poly,fa7,ii,0);
                    else
                      for (ii=0; ii<dimension; ii++)
                        flux += gradient(amont,comp2,ii)*vecteur_face_facette(poly,fa7,ii,1);
                    flux *= psc;
                    resu(num10,comp2) -= flux;
                    resu(num20,comp2) += flux;
                  }
 
            } // end of the loop over facet vertices
        } // end of the loop over facets
    } // end of the loop
 
 
 
 
  int voisine;
  nb_faces_perio = 0;
  double diff1,diff2;
 
  // Loop over the boundaries to process the boundary conditions
  // a convection term is taken into account for
  // Neumann_sortie_libre boundary conditions only
 
  // Dimensioning the array of convective fluxes at the boundary of the computational
  // domain
  DoubleTab& flux_b = flux_bords_;
  flux_b.resize(domaine_VEF.nb_faces_bord(),ncomp_ch_transporte);
  flux_b = 0.;
 
  for (n_bord=0; n_bord<domaine_VEF.nb_front_Cl(); n_bord++)
    {
      const Cond_lim& la_cl = domaine_Cl_VEF.les_conditions_limites(n_bord);
 
      if (sub_type(Neumann_sortie_libre,la_cl.valeur()))
        {
          const Neumann_sortie_libre& la_sortie_libre = ref_cast(Neumann_sortie_libre, la_cl.valeur());
          const Front_VF& le_bord = ref_cast(Front_VF,la_cl->frontiere_dis());
          int num1 = le_bord.num_premiere_face();
          int num2 = num1 + le_bord.nb_faces();
          for (num_face=num1; num_face<num2; num_face++)
            {
              psc =0;
              for (i=0; i<dimension; i++)
                psc += la_vitesse.valeurs()(num_face,i)*face_normales(num_face,i)*porosite_face(num_face);
              if (psc>0)
                if (ncomp_ch_transporte == 1)
                  {
                    resu(num_face) -= psc*transporte(num_face);
                    flux_b(num_face,0) -= psc*transporte(num_face);
                  }
                else
                  for (i=0; i<ncomp_ch_transporte; i++)
                    {
                      resu(num_face,i) -= psc*transporte(num_face,i);
                      flux_b(num_face,i) -= psc*transporte(num_face,i);
                    }
              else
                {
                  if (ncomp_ch_transporte == 1)
                    {
                      resu(num_face) -= psc*la_sortie_libre.val_ext(num_face-num1);
                      flux_b(num_face,0) -= psc*la_sortie_libre.val_ext(num_face-num1);
                    }
                  else
                    for (i=0; i<ncomp_ch_transporte; i++)
                      {
                        resu(num_face,i) -= psc*la_sortie_libre.val_ext(num_face-num1,i);
                        flux_b(num_face,i) -= psc*la_sortie_libre.val_ext(num_face-num1,i);
                      }
                  fluent_(num_face) -= psc;
                }
            }
        }
      else if (sub_type(Periodique,la_cl.valeur()))
        {
          const Periodique& la_cl_perio = ref_cast(Periodique, la_cl.valeur());
          const Front_VF& le_bord = ref_cast(Front_VF,la_cl->frontiere_dis());
          int num1 = le_bord.num_premiere_face();
          int num2 = num1 + le_bord.nb_faces();
          IntVect fait(le_bord.nb_faces());
          fait = 0;
          for (num_face=num1; num_face<num2; num_face++)
            {
              if (fait[num_face-num1] == 0)
                {
                  voisine = la_cl_perio.face_associee(num_face-num1) + num1;
 
                  if (ncomp_ch_transporte == 1)
                    {
                      diff1 = resu(num_face)-tab(nb_faces_perio);
                      diff2 = resu(voisine)-tab(nb_faces_perio+voisine-num_face);
                      resu(voisine)  += diff1;
                      resu(num_face) += diff2;
                      flux_b(voisine,0) += diff1;
                      flux_b(num_face,0) += diff2;
                    }
                  else
                    for (int comp2=0; comp2<ncomp_ch_transporte; comp2++)
                      {
                        diff1 = resu(num_face,comp2)-tab(nb_faces_perio,comp2);
                        diff2 = resu(voisine,comp2)-tab(nb_faces_perio+voisine-num_face,comp2);
                        resu(voisine,comp2)  += diff1;
                        resu(num_face,comp2) += diff2;
                        flux_b(voisine,comp2) += diff1;
                        flux_b(num_face,comp2) += diff2;
                      }
 
                  fait[num_face-num1]= 1;
                  fait[voisine-num1] = 1;
                }
              nb_faces_perio++;
            }
        }
    }
 
 
  modifier_flux(*this);
  return resu;
}