Tri_EF.cpp

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#include <Tri_EF.h>
#include <Domaine.h>
#include <Domaine_EF.h>
#include <Champ_P1_EF.h>
#include <Equation_base.h>
#include <Milieu_base.h>
 
Implemente_instanciable_sans_constructeur(Tri_EF,"Tri_EF",Elem_EF_base);
 
// printOn and readOn
 
 
Sortie& Tri_EF::printOn(Sortie& s ) const
{
  return s << que_suis_je() << finl;
}
 
Entree& Tri_EF::readOn(Entree& s )
{
  return s ;
}
 
Tri_EF::Tri_EF()
{
}
 
/*! @brief Fills the face_normales array in the Domaine_EF.
 *
 * @param num_Face Local face index.
 * @param Face_normales Array of face normals to fill.
 * @param Face_sommets Face-to-vertex connectivity table.
 * @param Face_voisins Face neighbour element table.
 * @param elem_faces Element-to-face connectivity table.
 * @param domaine_geom Geometric domain.
 */
void Tri_EF::normale(int num_Face,DoubleTab& Face_normales,
                     const  IntTab& Face_sommets,
                     const IntTab& Face_voisins,
                     const IntTab& elem_faces,
                     const Domaine& domaine_geom) const
{
  const DoubleTab& les_coords = domaine_geom.coord_sommets();
 
  double x1,y1;
  double nx,ny;
  int no3;
  int f0;
  int n0 = Face_sommets(num_Face,0);
  int n1 = Face_sommets(num_Face,1);
  x1 = les_coords(n0,0)-les_coords(n1,0);
  y1 = les_coords(n0,1)-les_coords(n1,1);
  nx = -y1;
  ny = x1;
 
  // Orient the normal from elem1 toward elem2
  // by searching for the vertex of elem1 that is not on the Face
  int elem1 = Face_voisins(num_Face,0);
  if ( (f0 = elem_faces(elem1,0)) == num_Face )
    f0 = elem_faces(elem1,1);
  if ( (no3 = Face_sommets(f0,0)) != n0 && no3 != n1 )
    { /* Do nothing */}
  else
    no3 = Face_sommets(f0,1);
 
  x1 = les_coords(no3,0) - les_coords(n0,0);
  y1 = les_coords(no3,1) - les_coords(n0,1);
 
  if ( (nx*x1+ny*y1) > 0 )
    {
      Face_normales(num_Face,0) = - nx;
      Face_normales(num_Face,1) = - ny;
    }
  else
    {
      Face_normales(num_Face,0) = nx;
      Face_normales(num_Face,1) = ny;
    }
}
 
/*! @brief
 *
 */
void Tri_EF::calcul_vc(const ArrOfInt& Face,ArrOfDouble& vc,
                       const ArrOfDouble& vs,const DoubleTab& vsom,
                       const Champ_Inc_base& vitesse,int type_cl) const
{
  const DoubleVect& porosite_face = vitesse.equation().milieu().porosite_face();
  //Cerr << " type_cl " <<  type_cl << finl;
  switch(type_cl)
    {
    case 0: // the triangle has no Dirichlet face
      {
        vc[0] = vs[0]/3;
        vc[1] = vs[1]/3;
        break;
      }
 
    case 1: // the triangle has one Dirichlet face: face 2
      {
        vc[0]= vitesse.valeurs()(Face[2],0)*porosite_face[Face[2]];
        vc[1]= vitesse.valeurs()(Face[2],1)*porosite_face[Face[2]];
        //vc[0]= vitesse.valeurs()(Face[2],0);
        //vc[1]= vitesse.valeurs()(Face[2],1);
        break;
      }
 
    case 2: // the triangle has one Dirichlet face: face 1
      {
        vc[0]= vitesse.valeurs()(Face[1],0)*porosite_face[Face[1]];
        vc[1]= vitesse.valeurs()(Face[1],1)*porosite_face[Face[1]];
        //vc[0]= vitesse.valeurs()(Face[1],0);
        //vc[1]= vitesse.valeurs()(Face[1],1);
        break;
      }
 
    case 4: // the triangle has one Dirichlet face: face 0
      {
        vc[0]= vitesse.valeurs()(Face[0],0)*porosite_face[Face[0]];
        vc[1]= vitesse.valeurs()(Face[0],1)*porosite_face[Face[0]];
        // vc[0]= vitesse.valeurs()(Face[0],0);
        //vc[1]= vitesse.valeurs()(Face[0],1);
        break;
      }
 
    case 3: // the triangle has two Dirichlet faces: faces 1 and 2
      {
        vc[0]= vsom(0,0);
        vc[1]= vsom(0,1);
        break;
      }
 
    case 5: // the triangle has two Dirichlet faces: faces 0 and 2
      {
        vc[0]= vsom(1,0);
        vc[1]= vsom(1,1);
        break;
      }
 
    case 6: // the triangle has two Dirichlet faces: faces 0 and 1
      {
        vc[0]= vsom(2,0);
        vc[1]= vsom(2,1);
        break;
      }
 
    } // end of switch
 
}
 
/*! @brief Computes the coordinates xg of the centre of a non-standard element.
 *
 * @brief Also computes idirichlet = number of Dirichlet faces of the element.
 *  If idirichlet=2, n1 is the index of the vertex coinciding with G.
 * @param xg Output centre coordinates.
 * @param x Vertex coordinate table for the element.
 * @param type_elem_Cl Element boundary condition type.
 * @param idirichlet Output number of Dirichlet faces.
 * @param n1 Output index of the vertex coinciding with G (when idirichlet=2).
 */
void Tri_EF::calcul_xg(DoubleVect& xg, const DoubleTab& x,
                       const int type_elem_Cl,int& idirichlet,int& n1,int& ,int& ) const
{
  int j,dim=xg.size();
  switch(type_elem_Cl)
    {
 
    case 0:  // the triangle has no Dirichlet face: it has 3 facets
      //  G is the barycentre of the triangle vertices
      {
        for (j=0; j<dim; j++)
          xg[j]=(x(0,j)+x(1,j)+x(2,j))/3;
 
        idirichlet=0;
        break;
      }
 
    case 1:  // the triangle has one Dirichlet face: face 2
      // G is the barycentre of the vertices of face 2
 
      {
        for (j=0; j<dim; j++)
          xg[j]=(x(0,j)+x(1,j))/2;
 
        idirichlet=1;
        break;
      }
 
    case 2:  // the triangle has one Dirichlet face: face 1
      // G is the barycentre of the vertices of face 1
 
      {
        for (j=0; j<dim; j++)
          xg[j]=(x(0,j)+x(2,j))/2;
 
        idirichlet=1;
        break;
      }
 
    case 4:  // the triangle has one Dirichlet face: face 0
      // G is the barycentre of the vertices of face 0
 
      {
        for (j=0; j<dim; j++)
          xg[j]=(x(1,j)+x(2,j))/2;
 
        idirichlet=1;
        break;
      }
 
    case 6 : // the triangle has two Dirichlet faces: faces 0 and 1
      // G is vertex 2 of the triangle
 
      {
        for (j=0; j<dim; j++)
          xg[j]=x(2,j);
 
        idirichlet=2;
        n1 = 2;
        break;
 
      }
 
    case 5 : // the triangle has two Dirichlet faces: faces 0 and 2
      // G is vertex 1 of the triangle
 
      {
        for (j=0; j<dim; j++)
          xg[j]=x(1,j);
 
        idirichlet=2;
        n1 = 1;
        break;
 
      }
 
    case 3 : // the triangle has two Dirichlet faces: faces 1 and 2
      // G is vertex 0 of the triangle
 
      {
        for (j=0; j<dim; j++)
          xg[j]=x(0,j);
 
        idirichlet=2;
        n1 = 0;
        break;
 
      }
 
    } // end of switch
 
}