PDC_PolyMAC_CDO_impl.cpp

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#include <PDC_PolyMAC_CDO_impl.h>
#include <Equation_base.h>
#include <Motcle.h>
#include <Param.h>
 
int PDC_Anisotrope_PolyMAC_CDO::lire_motcle_non_standard_impl(const Motcle& mot, Entree& is)
{
  Nom tmp;
  is >> tmp;
  Cerr << "Reading and interpreting the function " << tmp << " ... ";
  lambda_ortho.setNbVar(2 + Objet_U::dimension);
  lambda_ortho.setString(tmp);
  lambda_ortho.addVar("Re");
  lambda_ortho.addVar("t");
  lambda_ortho.addVar("x");
  if (Objet_U::dimension > 1)
    lambda_ortho.addVar("y");
  if (Objet_U::dimension > 2)
    lambda_ortho.addVar("z");
  lambda_ortho.parseString();
  Cerr << " Ok" << finl;
  return 1;
}
 
void PDC_Anisotrope_PolyMAC_CDO::coeffs_perte_charge_impl(const DoubleVect& u, const DoubleVect& pos, double t, double norme_u,
                                                          double dh, double nu, double reynolds, double K, double& coeff_ortho,
                                                          double& coeff_long, double& u_l, DoubleVect& v_valeur, Parser_U& lambda) const
{
  // Compute lambda
  lambda.setVar(0, reynolds);
  lambda.setVar(1, t);
  lambda.setVar(2, pos[0]);
  if (Objet_U::dimension > 1)
    lambda.setVar(3, pos[1]);
  if (Objet_U::dimension > 2)
    lambda.setVar(4, pos[2]);
 
  // Compute lambda_ortho
  lambda_ortho.setVar(0, reynolds);
  lambda_ortho.setVar(1, t);
  lambda_ortho.setVar(2, pos[0]);
  if (Objet_U::dimension > 1)
    lambda_ortho.setVar(3, pos[1]);
  if (Objet_U::dimension > 2)
    lambda_ortho.setVar(4, pos[2]);
  double l_ortho = lambda_ortho.eval(); // to avoid evaluating the parser twice
 
  // Compute v and ||v||^2
  //  DoubleVect v_valeur(dimension);
  double vcarre = 0;
  v->valeur_a(pos, v_valeur);
  for (int dim = 0; dim < Objet_U::dimension; dim++)
    vcarre += v_valeur[dim] * v_valeur[dim];
  v_valeur /= sqrt(vcarre);
  // Compute u.v
  double scal = 0;
  for (int dim = 0; dim < Objet_U::dimension; dim++)
    scal += u[dim] * v_valeur[dim];
 
  // Compute the result
  /*
   for (int dim=0;dim<dimension;dim++)
   p_charge[dim] = -l_ortho*norme_u/2./dh*u[dim]
   -(lambda.eval()-l_ortho)*scal*v_valeur[dim]*norme_u/2./dh;
   */
  coeff_ortho = K * l_ortho * norme_u / 2. / dh;
  coeff_long = K * lambda.eval() * norme_u / 2. / dh;
  u_l = scal;
}
 
int PDC_Circulaire_PolyMAC_CDO::lire_motcle_non_standard_impl(const Motcle& mot, Entree& is)
{
  Nom tmp;
  is >> tmp;
  Cerr << "Reading and interpreting the function " << tmp << " ... ";
  lambda_ortho.setNbVar(3 + Objet_U::dimension);
  lambda_ortho.setString(tmp);
  lambda_ortho.addVar("Re_tot");
  lambda_ortho.addVar("Re_ortho");
  lambda_ortho.addVar("t");
  lambda_ortho.addVar("x");
  if (Objet_U::dimension > 1)
    lambda_ortho.addVar("y");
  if (Objet_U::dimension > 2)
    lambda_ortho.addVar("z");
  lambda_ortho.parseString();
  Cerr << " Ok" << finl;
  return 1;
}
 
void PDC_Circulaire_PolyMAC_CDO::coeffs_perte_charge_impl(const DoubleVect& u, const DoubleVect& pos, double t,
                                                          double norme_u, double dh, double nu, double reynolds, double K, double& coeff_ortho,
                                                          double& coeff_long, double& u_l, DoubleVect& av_valeur, Parser_U& lambda) const
{
  // compute dh_ortho
  double dh_ortho = diam_hydr_ortho->valeur_a_compo(pos, 0);
 
  // compute u.d/||d||
  // Compute v and ||v||^2
  av_valeur.resize(Objet_U::dimension);
 
  v->valeur_a(pos, av_valeur);
  // normalize v
  {
    double vcarre = 0;
    for (int dim = 0; dim < Objet_U::dimension; dim++)
      vcarre += av_valeur[dim] * av_valeur[dim];
    av_valeur /= sqrt(vcarre);
  }
  // Compute u.v/||v||
  u_l = 0;
 
  for (int dim = 0; dim < Objet_U::dimension; dim++)
    u_l += u[dim] * av_valeur[dim];
 
  double u_ortho = sqrt(norme_u * norme_u - u_l * u_l);
  // compute Re_l and Re_ortho
  // Compute the Reynolds number
  /* PL: To avoid a possible division by zero, we replace:
   double nu=norme_u*dh/reynolds;
   double Re_l=std::fabs(u_l)*dh/nu; */
  // By:
  double Re_l = dh * std::fabs(u_l) / nu;
  if (Re_l < 1e-10)
    Re_l = 1e-10;
  // PL: To avoid a possible division by zero, we replace:
  /* double Re_ortho=u_ortho*dh_ortho/nu; */
  // By:
  double Re_ortho = dh_ortho * u_ortho / nu;
  if (Re_ortho < 1e-10)
    Re_ortho = 1e-10;
  // Compute lambda
  lambda.setVar(0, reynolds);
  lambda.setVar(1, Re_l);
  lambda.setVar(2, t);
  lambda.setVar(3, pos[0]);
  if (Objet_U::dimension > 1)
    lambda.setVar(4, pos[1]);
  if (Objet_U::dimension > 2)
    lambda.setVar(5, pos[2]);
 
  // Compute lambda_ortho
  lambda_ortho.setVar(0, reynolds);
  lambda_ortho.setVar(1, Re_ortho);
  lambda_ortho.setVar(2, t);
  lambda_ortho.setVar(3, pos[0]);
  if (Objet_U::dimension > 1)
    lambda_ortho.setVar(4, pos[1]);
  if (Objet_U::dimension > 2)
    lambda_ortho.setVar(5, pos[2]);
  double l_ortho = lambda_ortho.eval(); // to avoid evaluating the parser twice
  double l_long = lambda.eval();
  coeff_ortho = K * l_ortho * u_ortho / 2. / dh_ortho;
  coeff_long = K * l_long * std::fabs(u_l) / 2. / dh;
}
 
void PDC_Directionnelle_PolyMAC_CDO::coeffs_perte_charge_impl(const DoubleVect& u, const DoubleVect& pos, double t, double norme_u,
                                                              double dh, double nu, double reynolds, double K, double& coeff_ortho,
                                                              double& coeff_long, double& u_l, DoubleVect& v_valeur, Parser_U& lambda) const
{
  // Compute lambda
  lambda.setVar(0, reynolds);
  lambda.setVar(1, t);
  lambda.setVar(2, pos[0]);
  if (Objet_U::dimension > 1)
    lambda.setVar(3, pos[1]);
  if (Objet_U::dimension > 2)
    lambda.setVar(4, pos[2]);
 
  // Compute v and ||v||^2
  //  DoubleVect v_valeur(dimension);
  double vcarre = 0;
  v->valeur_a(pos, v_valeur);
  for (int dim = 0; dim < Objet_U::dimension; dim++)
    vcarre += v_valeur[dim] * v_valeur[dim];
  v_valeur /= sqrt(vcarre);
  // Compute u.v
  double scal = 0;
  for (int dim = 0; dim < Objet_U::dimension; dim++)
    scal += u[dim] * v_valeur[dim];
  /*
   // Compute the result
   for (int dim=0;dim<dimension;dim++)
   p_charge[dim] = -lambda.eval()*scal*v_valeur[dim]*norme_u/2./dh;
   */
  u_l = scal;
  coeff_long = K * lambda.eval() * norme_u / 2. / dh;
  coeff_ortho = 0;
}
 
void PDC_Isotrope_PolyMAC_CDO::coeffs_perte_charge_impl(const DoubleVect& u, const DoubleVect& pos, double t, double norme_u,
                                                        double dh, double nu, double reynolds, double K, double& coeff_ortho,
                                                        double& coeff_long, double& u_l, DoubleVect& v_valeur, Parser_U& lambda) const
{
  // Compute lambda
  lambda.setVar(0, reynolds);
  lambda.setVar(1, t);
  lambda.setVar(2, pos[0]);
  if (Objet_U::dimension > 1)
    lambda.setVar(3, pos[1]);
  if (Objet_U::dimension > 2)
    lambda.setVar(4, pos[2]);
 
  // Compute the result
  coeff_ortho = K * lambda.eval() * norme_u / 2. / dh;
  coeff_long = coeff_ortho;
  // v is not used because coeff_ortho=coeff_long
  //  for (int dim=0;dim<dimension;dim++)
  //  p_charge[dim] = -lambda.eval()*norme_u/2./dh*u[dim];
  u_l = 0;
}