Perte_Charge_Anisotrope_VEF_P1NC.cpp

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#include <Perte_Charge_Anisotrope_VEF_P1NC.h>
#include <Motcle.h>
#include <Equation_base.h>
#include <Param.h>
 
Implemente_instanciable(Perte_Charge_Anisotrope_VEF_P1NC,"Perte_Charge_Anisotrope_VEF_P1NC",Perte_Charge_VEF);
// XD perte_charge_anisotrope source_base perte_charge_anisotrope BRACE Anisotropic pressure loss.
// XD attr lambda chaine lambda_u REQ Function for loss coefficient which may be Reynolds dependant (Ex: 64/Re).
// XD attr lambda_ortho chaine lambda_ortho REQ Function for loss coefficient in transverse direction which may be
// XD_CONT Reynolds dependant (Ex: 64/Re).
// XD attr diam_hydr champ_don_base diam_hydr REQ Hydraulic diameter value.
// XD attr direction champ_don_base direction REQ Field which indicates the direction of the pressure loss.
// XD attr sous_zone chaine sous_zone OPT Optional sub-area where pressure loss applies.
 
Sortie& Perte_Charge_Anisotrope_VEF_P1NC::printOn(Sortie& s ) const
{
  return s << que_suis_je() << finl;
}
 
Entree& Perte_Charge_Anisotrope_VEF_P1NC::readOn(Entree& s )
{
  Perte_Charge_VEF::readOn(s);
  if (v->nb_comp()!=dimension)
    {
      Cerr << "The direction field must be defined with " << dimension << " components" << finl;
      exit();
    }
  return s;
}
 
void Perte_Charge_Anisotrope_VEF_P1NC::set_param(Param& param) const
{
  Perte_Charge_VEF::set_param(param);
  param.ajouter_non_std("lambda_ortho",(this),Param::REQUIRED);
  param.ajouter("direction",&v,Param::REQUIRED);
}
 
int Perte_Charge_Anisotrope_VEF_P1NC::lire_motcle_non_standard(const Motcle& mot, Entree& is)
{
  if (mot=="lambda_ortho")
    {
      Nom tmp;
      is >> tmp;
      Cerr << "Reading and parsing the function " << tmp << " ... ";
      lambda_ortho.setNbVar(2+dimension);
      lambda_ortho.setString(tmp);
      lambda_ortho.addVar("Re");
      lambda_ortho.addVar("t");
      lambda_ortho.addVar("x");
      if (dimension>1)
        lambda_ortho.addVar("y");
      if (dimension>2)
        lambda_ortho.addVar("z");
      lambda_ortho.parseString();
      Cerr << " Ok" << finl;
      return 1;
    }
  else
    {
      return Perte_Charge_VEF::lire_motcle_non_standard(mot,is);
    }
}
 
////////////////////////////////////////////////////////////////
//                                                            //
//           Main function: pressure drop coefficients        //
//                                                            //
////////////////////////////////////////////////////////////////
 
void Perte_Charge_Anisotrope_VEF_P1NC::coeffs_perte_charge(const DoubleVect& u, const DoubleVect& pos,
                                                           double t, double norme_u, double dh, double nu, double reynolds, double& coeff_ortho, double& coeff_long,double& u_l, DoubleVect& v_valeur) const
{
 
  // Compute lambda
  lambda.setVar(0,reynolds);
  lambda.setVar(1,t);
  lambda.setVar(2,pos[0]);
  if (dimension>1)
    lambda.setVar(3,pos[1]);
  if (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 (dimension>1)
    lambda_ortho.setVar(3,pos[1]);
  if (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<dimension; dim++)
    vcarre+=v_valeur[dim]*v_valeur[dim];
  v_valeur/=sqrt(vcarre);
  // Compute u.v
  double scal=0;
  for (int dim=0; dim<dimension; dim++)
    scal+=u[dim]*v_valeur[dim];
 
  // Compute 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=l_ortho*norme_u/2./dh;
  coeff_long=lambda.eval()*norme_u/2./dh;
  u_l=scal;
}