Loi_paroi_adaptative.cpp

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#include <Loi_paroi_adaptative.h>
#include <Navier_Stokes_std.h>
#include <Correlation_base.h>
#include <QDM_Multiphase.h>
#include <TRUSTTab_parts.h>
#include <Cond_lim_base.h>
#include <Pb_Multiphase.h>
#include <Domaine_VF.h>
#include <TRUSTTrav.h>
#include <Motcle.h>
#include <Param.h>
#include <math.h>
#include <Nom.h>
#include <Champ_Face_base.h>
 
Implemente_instanciable(Loi_paroi_adaptative, "Loi_paroi_adaptative", Loi_paroi_log);
 
Sortie& Loi_paroi_adaptative::printOn(Sortie& os) const
{
  return os;
}
 
Entree& Loi_paroi_adaptative::readOn(Entree& is)
{
  return Loi_paroi_log::readOn(is);
}
 
void Loi_paroi_adaptative::calc_y_plus(const DoubleTab& vit, const DoubleTab& nu_visc)
{
  const int cnu = nu_visc.dimension(0) == 1;
  Domaine_VF& domaine = ref_cast(Domaine_VF, pb_->domaine_dis());
  DoubleTab& u_t = valeurs_loi_paroi_["u_tau"];
  DoubleTab& y_p = valeurs_loi_paroi_["y_plus"];
  const DoubleTab& n_f = domaine.face_normales();
  const DoubleVect& fs = domaine.face_surfaces();
  const IntTab& f_e = domaine.face_voisins();
 
  const int nf_tot = domaine.nb_faces_tot();
  const int D = dimension;
  const int N = vit.line_size();
 
  DoubleTab pvit_elem(0, N * dimension);
  if (nf_tot == vit.dimension_tot(0))
    {
      const Champ_Face_base& ch = ref_cast(Champ_Face_base, pb_->equation(0).inconnue());
      domaine.domaine().creer_tableau_elements(pvit_elem);
      ch.get_elem_vector_field(pvit_elem, true);
    }
 
  int n = 0; // pour l'instant, turbulence dans seulement une phase
 
  for (int f = 0 ; f < nf_tot ; f ++)
    if (Faces_a_calculer_(f,0)==1)
      {
        const int c = (f_e(f, 0) >= 0) ? 0 : 1;
        if (f_e(f, (c == 0) ? 1 : 0) >= 0)
          Process::exit("Error in the definition of the boundary conditions for wall laws");
        const int e = f_e(f, c);
 
        double u_orth {0.0};
        DoubleTrav u_parallel(D);
        if (nf_tot == vit.dimension_tot(0)) // VDF case
          {
            for (int d = 0; d < D; d++)
              u_orth -= pvit_elem(e, N*d + n)*n_f(f,d)/fs(f); // ! n_f pointe vers la face 1 donc vers l'exterieur de l'element, d'ou le -
            for (int d = 0 ; d < D; d++)
              u_parallel(d) = pvit_elem(e, N*d + n) - u_orth*(-n_f(f,d))/fs(f) ; // ! n_f pointe vers la face 1 donc vers l'exterieur de l'element, d'ou le -
          }
        else // PolyMAC case
          {
            for (int d = 0; d < D; d++)
              u_orth -= vit(nf_tot + e * D + d, n)*n_f(f, d)/fs(f); // ! n_f pointe vers la face 1 donc vers l'exterieur de l'element, d'ou le -
            for (int d = 0; d < D; d++)
              u_parallel(d) = vit(nf_tot + e * D + d, n) - u_orth*(-n_f(f, d))/fs(f) ; // ! n_f pointe vers la face 1 donc vers l'exterieur de l'element, d'ou le -
          }
 
        double residu = 0;
        for (int d = 0; d < D; d++)
          residu += u_parallel(d)*n_f(f, d)/fs(f);
        if (residu > 1e-8)
          Process::exit("Loi_paroi_adaptative : Error in the calculation of the parallel velocity for wall laws");
 
        const double norm_u_parallel = std::sqrt(domaine.dot(&u_parallel(0), &u_parallel(0)));
 
        const double y_loc = (c == 0) ? domaine.dist_face_elem0(f, e) : domaine.dist_face_elem1(f, e) ;
        y_p(f, n) = std::max(y_p_min_,
                             calc_y_plus_loc(norm_u_parallel, nu_visc(!cnu * e, n), y_loc, y_p(f, n)));
        u_t(f, n) = y_p(f, n)*nu_visc(!cnu * e, n)/y_loc;
      }
}
 
double Loi_paroi_adaptative::u_plus_de_y_plus(double y_p)  // Blended Reichardt model
{
  const double reichardt = std::log(1 + 0.4*y_p)/von_karman_
                           + 7.8*(1 - std::exp(-y_p/11) - y_p/11*std::exp(-y_p/3));
  const double log_law = std::log(y_p + limiteur_y_p_)/von_karman_ + 5.1;
  const double blending = std::tanh( y_p/27*y_p/27*y_p/27*y_p/27);
 
  return (1.0 - blending)*reichardt + blending*log_law;
}
 
double Loi_paroi_adaptative::deriv_u_plus_de_y_plus(double y_p)
{
  const double reichardt = std::log(1 + 0.4*y_p)/von_karman_
                           + 7.8*(1 - std::exp(-y_p/11) - y_p/11*std::exp(-y_p/3));
  const double log_law = std::log(y_p + limiteur_y_p_)/von_karman_ + 5.1;
  const double blending = std::tanh( y_p/27*y_p/27*y_p/27*y_p/27);
 
  const double d_reichardt = 0.4/(1 + 0.4*y_p)*1/von_karman_ + 7.8/11*std::exp(-y_p/11)
                             - 7.8/11*std::exp(-y_p/3) + 7.8*y_p/33*std::exp(-y_p/3) ;
  const double d_log_law = 1.0/(y_p + limiteur_y_p_)*1./von_karman_;
  const double d_blending = 4.0/27*(y_p/27*y_p/27*y_p/27)*(1 - blending*blending);
 
  return (1 - blending)*d_reichardt - reichardt*d_blending + blending*d_log_law + d_blending*log_law ;
}