Convection_Diffusion_Fluide_Dilatable_Proto.cpp

/****************************************************************************
* Copyright (c) 2026, CEA
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
 
#include <Convection_Diffusion_Fluide_Dilatable_base.h>
#include <Convection_Diffusion_Fluide_Dilatable_Proto.h>
#include <Navier_Stokes_Fluide_Dilatable_base.h>
#include <Fluide_Weakly_Compressible.h>
#include <Convection_Diffusion_std.h>
#include <EcritureLectureSpecial.h>
#include <Op_Conv_negligeable.h>
#include <Discretisation_base.h>
#include <Schema_Temps_base.h>
#include <Champ_Uniforme.h>
#include <Probleme_base.h>
#include <Matrice_Morse.h>
#include <TRUST_2_PDI.h>
#include <TRUSTTrav.h>
#include <Operateur.h>
#include <Domaine.h>
#include <Avanc.h>
#include <Device.h>
#include <Perf_counters.h>
 
void Convection_Diffusion_Fluide_Dilatable_Proto::calculer_div_rho_u_impl
(DoubleTab& Div, const Convection_Diffusion_Fluide_Dilatable_base& eqn) const
{
  const Operateur& op_conv = eqn.operateur(1);
  // No convective operator:
  if (sub_type(Op_Conv_negligeable,op_conv.l_op_base()))
    {
      Div=0;
      return;
    }
 
  // temporarily swap the domain boundary conditions
  if (!ch_unite_)
    {
      ch_unite_ = eqn.inconnue();
      ch_unite_->valeurs() = 1.0;
    }
  ref_cast_non_const(Operateur_Conv_base,op_conv.l_op_base()).associer_champ_temp(ch_unite_, true);
 
  if (eqn.discretisation().que_suis_je() != "VDF")
    ref_cast_non_const(Operateur_base,op_conv.l_op_base()).associer_domaine_cl_dis(eqn.domaine_cl_modif());
 
  op_conv.ajouter(ch_unite_->valeurs(), Div);
  ref_cast_non_const(Operateur_Conv_base,op_conv.l_op_base()).associer_champ_temp(eqn.inconnue(), false);
 
  if (eqn.discretisation().que_suis_je() != "VDF")
    ref_cast_non_const(Operateur_base,op_conv.l_op_base()).associer_domaine_cl_dis(eqn.domaine_Cl_dis());
}
 
/*! @brief Returns the time derivative of the equation's unknown.
 *
 * The computation is: d(unknown)/dt = M^{-1} * (sources - sum(Op_i(unknown))) / rho
 *
 * @param derivee Array of time-derivative values of the unknown field.
 * @return Array of time-derivative values of the unknown field.
 */
DoubleTab& Convection_Diffusion_Fluide_Dilatable_Proto::derivee_en_temps_inco_sans_solveur_masse_impl
(Convection_Diffusion_Fluide_Dilatable_base& eqn, DoubleTab& derivee, const bool is_expl)
{
  /*
   * ATTENTION : THIS IS A GENERIC METHOD THAT IS USED TO SOLVE EXPLICITLY (OR DIFFUSION IMPLICIT)
   * A THERMAL OR SPECIES CONV/DIFF EQUATION. SO THE VARIABLE CAN EITHER BE THE TEMPERATURE T OR
   * THE MASS FRACTION Y.
   *
   * For the species equation for example, we have :
   * d(rho Y)/dt + div( rho*u*Y ) = div( rho*D*grad(Y) )
   *
   * With a non conservative formulation we write:
   * rho d(Y)/dt + Y d(rho)/dt + Y div (rho*u) + rho*u grad(Y) = div( rho*D*grad(Y) )
   *
   * Using the mass equation, we get :
   * rho d(Y)/dt + rho*u grad(Y) = div( rho*D*grad(Y) )
   *
   * divide by rho => d(Y)/dt = ( div( rho*D*grad(Y) ) + S ) / rho - u grad(Y)
   *
   * This is what we code here with derivee = d(Y)/dt
   *
   *
   * Similarly for the temperature equation, we code
   *
   * derivee = d(T)/dt = ( div( lambda*grad(T) ) + S ) / (rho*Cp) - u grad(T)
   */
 
  const Schema_Temps_base& sch = eqn.schema_temps();
  int diffusion_implicite=sch.diffusion_implicite();
  eqn.domaine_Cl_dis().les_conditions_limites().set_modifier_val_imp(0);
 
  /*
   * FIRST TERM : diffusive
   * derivee = div( rho*D*grad(Y) ) or div( lambda*grad(T) )
   */
  Fluide_Dilatable_base& fluide_dil = eqn.fluide();
  if ( !is_thermal() /* species equation */ || (is_thermal() && fluide_dil.type_fluide()=="Gaz_Parfait" ))
    {
      if (!diffusion_implicite) eqn.operateur(0).ajouter(derivee);
    }
  else // Thermal equation + Gaz reel => No diffusion implicit ...
    {
      eqn.operateur(0).ajouter(fluide_dil.temperature(),derivee);
      if (diffusion_implicite)
        {
          Cerr << "Error: diffusion implicit not implemented in Convection_Diffusion_Chaleur_Fluide_Dilatable_base" << finl;
          Process::exit();
        }
    }
 
  eqn.domaine_Cl_dis().les_conditions_limites().set_modifier_val_imp(1);
  derivee.echange_espace_virtuel();
 
  // Add source term (if any, but for temperatur eit is sure !!! )
  eqn.sources().ajouter(derivee);
 
  // Divide derivee by rho if species or real gas... otherwise divide by rho*Cp!
  bool flag = is_thermal() && fluide_dil.type_fluide()=="Gaz_Parfait";
  if (flag) fluide_dil.update_rho_cp(sch.temps_courant());
  const DoubleTab& array = flag ? eqn.get_champ("rho_cp_comme_T").valeurs() : fluide_dil.masse_volumique().valeurs();
  tab_divide_any_shape(derivee, array);
  derivee.echange_espace_virtuel();
 
  /*
   * SECOND TERM : convective
   * = - u grad(Y) = [ Y div (rho*u) - div( rho*u*Y ) ] / rho
   * or
   * = - u grad(T) = [ T div (rho*u) - div( rho*u*T ) ] / rho*Cp
   */
  DoubleTrav convection(derivee);
 
  // Add Y div (rho*u) or T div (rho*u)
  const DoubleTab& inco = eqn.inconnue().valeurs();
  calculer_div_u_ou_div_rhou(convection);
 
  tab_multiply_any_shape(convection, inco);
  convection*=-1;
 
  // Add convection operator: - div( rho*u*Y ) or -div ( rho*u*T )
  eqn.operateur(1).ajouter(convection);
 
  // Divide by rho if necessary
  if (is_generic())
    {
      const DoubleTab& tab_rho = fluide_dil.masse_volumique().valeurs();
      tab_divide_any_shape(convection, tab_rho);
    }
 
  // Complete with special source terms from mass equation (if any)
  DoubleTrav mass_source_term(derivee);
  mass_source_term = 0.0;
 
  const bool has_mass_flux = (sub_type(Navier_Stokes_Fluide_Dilatable_base, fluide_dil.vitesse().equation())) ?
                             ref_cast(Navier_Stokes_Fluide_Dilatable_base, fluide_dil.vitesse().equation()).has_source_masse() : false;
 
  if (!is_thermal() && has_mass_flux) /* species equation */
    {
      const Source_Masse_Fluide_Dilatable_base& src_masse = ref_cast(Navier_Stokes_Fluide_Dilatable_base, fluide_dil.vitesse().equation()).source_masse();
      src_masse.ajouter_eq_espece(eqn, fluide_dil, is_expl, mass_source_term);
    }
 
  /*
   * TOTAL TERM : diffusive + convective + sources
   */
  derivee+=convection;
 
  // if implicit scheme
  if (!is_expl && has_mass_flux)
    derivee += mass_source_term; // for this, the volume is handled by the mass solver later...
 
  if (diffusion_implicite)
    {
      const DoubleTab& Tfutur=eqn.inconnue().futur();
      DoubleTrav secmem(derivee);
      secmem=derivee; // without source term contribution
      eqn.solv_masse().appliquer(secmem);
 
      if (has_mass_flux)
        secmem += mass_source_term ; // add source term contribution (already divided by V)
 
      derivee = Tfutur;
 
      is_thermal() ? eqn.solv_masse().set_name_of_coefficient_temporel("rho_cp_comme_T") :
      eqn.solv_masse().set_name_of_coefficient_temporel("masse_volumique");
 
      eqn.Gradient_conjugue_diff_impl(secmem,derivee);
      eqn.solv_masse().set_name_of_coefficient_temporel("no_coeff");
    }
 
  // 100% explicit
  if (!sch.diffusion_implicite() && is_expl)
    {
      eqn.solv_masse().appliquer(derivee);
 
      if (has_mass_flux)
        derivee += mass_source_term; // add source term contribution (already divided by V)
 
      derivee.echange_espace_virtuel();
    }
 
  return derivee;
} /* END derivee_en_temps_inco_sans_solveur_masse_impl */
 
void Convection_Diffusion_Fluide_Dilatable_Proto::assembler_impl
( Convection_Diffusion_Fluide_Dilatable_base& eqn,
  Matrice_Morse& matrice_morse, const DoubleTab& inco, DoubleTab& resu)
{
  /*
   * ATEENTION : THIS IS A GENERIC METHOD THAT IS USED TO SOLVE IMPLICITLY A THERMAL OR SPECIES
   *  CONV/DIFF EQUATION. SO THE VARIABLE CAN EITHER BE THE TEMPERATURE T OR THE MASS FRACTION Y.
   *
   * See the previous method derivee_en_temps_inco_sans_solveur_masse_impl for more description
   * of the treated equations.
   */
 
  // Elie Saikali
  // Keep this test for debug ... TODO: check if all this can be removed...
  int test_op=0;
  {
    char* theValue = getenv("TRUST_TEST_OPERATEUR_IMPLICITE");
    if (theValue != nullptr) test_op=2;
  }
  {
    char* theValue = getenv("TRUST_TEST_OPERATEUR_IMPLICITE_BLOQUANT");
    if (theValue != nullptr) test_op=1;
  }
 
  Fluide_Dilatable_base& fluide_dil = eqn.fluide();
  const DoubleTab& tab_rho = fluide_dil.masse_volumique().valeurs();
  const int n = tab_rho.dimension(0);
 
  // add diffusion (with rho, D and Y / or lambda and T)
  eqn.operateur(0).l_op_base().contribuer_a_avec(inco, matrice_morse);
 
  // Add source term (if any)
  eqn.sources().contribuer_a_avec(inco,matrice_morse);
 
  // Really we need to copy ?
  tab_coeff_diffusif_ = matrice_morse.get_set_coeff();
 
  // compute convection operator coefficients to get coefficients of div(rho*u*Y)
  // or div(rho*u*T). In the thermal case, multiply by cp then divide by rho*cp all at once.
  matrice_morse.get_set_coeff()=0.;
  eqn.operateur(1).l_op_base().contribuer_a_avec(inco, matrice_morse);
 
  // compute div(rho * u)
  DoubleTrav tab_derivee2(resu);
  calculer_div_u_ou_div_rhou(tab_derivee2);
 
  if (!is_thermal()) //espece
    {
      ToDo_Kokkos("critical");
      const auto& tab1 = matrice_morse.get_tab1();
      auto& coeff = matrice_morse.get_set_coeff();
      for (int som=0 ; som<n ; som++)
        {
          double inv_rho = 1. / tab_rho(som);
          for (auto k=tab1(som)-1; k<tab1(som+1)-1; k++)
            coeff(k)= (coeff(k)*inv_rho+tab_coeff_diffusif_(k)*inv_rho);
 
          matrice_morse(som,som)+=tab_derivee2(som)*inv_rho;
        }
    }
  else if (is_thermal() && fluide_dil.type_fluide()=="Gaz_Parfait")
    {
      fluide_dil.update_rho_cp(eqn.schema_temps().temps_courant());
      // ToDo add tab1, tab2, coeff() methods to Matrice_morse_View avoid list of accessors...
      CDoubleArrView rhoCp = static_cast<const ArrOfDouble&>(eqn.get_champ("rho_cp_comme_T").valeurs()).view_ro();
      CDoubleArrView rho = static_cast<const ArrOfDouble&>(tab_rho).view_ro();
      CDoubleArrView derivee2 = static_cast<const ArrOfDouble&>(tab_derivee2).view_ro();
      auto tab1 = matrice_morse.get_tab1().view_ro();
      CDoubleArrView coeff_diffusif = tab_coeff_diffusif_.view_ro();
      DoubleArrView coeff = matrice_morse.get_set_coeff().view_wo();
      bool is_not_generic = !is_generic();
      Matrice_Morse_View matrice;
      matrice.set(matrice_morse);
      Kokkos::parallel_for(start_gpu_timer(__KERNEL_NAME__), range_1D(0, n), KOKKOS_LAMBDA(const int som)
      {
        double inv_rho = 1. / rho(som);
        if (is_not_generic) inv_rho = 1.;
        double rapport = 1. / rhoCp(som);
 
        // multiply the whole matrix row by the ratio
        for (auto k=tab1(som)-1; k<tab1(som+1)-1; k++)
          coeff(k)= (coeff(k)*inv_rho+coeff_diffusif(k)*rapport);
 
        // add T*div(rho*u)/rho
        matrice.add(som,som,derivee2(som)*inv_rho);
      });
      end_gpu_timer(__KERNEL_NAME__);
    }
  else
    {
      Cerr<<"The implicit algorithm is available only for perfect gas."<<finl;
      Process::exit();
    }
 
  // we have the approximate matrix, now recompute the residual;
  resu=0;
  derivee_en_temps_inco_sans_solveur_masse_impl(eqn,resu,false /* implicit */);
  matrice_morse.ajouter_multvect(inco,resu);
 
  if (test_op)
    {
      DoubleTrav diff(resu), conv(resu);
      eqn.operateur(0).l_op_base().contribuer_au_second_membre(diff);
      eqn.operateur(1).l_op_base().contribuer_au_second_membre(conv);
      eqn.sources().ajouter(diff);
      double Cp = -5.;
      int is_cp_unif= sub_type(Champ_Uniforme,fluide_dil.capacite_calorifique());
      const DoubleTab& tab_cp = fluide_dil.capacite_calorifique().valeurs();
      if (is_cp_unif) Cp=tab_cp(0,0);
 
      for (int som=0 ; som<n ; som++)
        {
          if (!is_cp_unif) Cp=tab_cp(som);
          double inv_rho=1./tab_rho(som);
          if (!is_generic()) inv_rho=1;
          double rapport=1./(tab_rho(som)*Cp);
          diff(som)=resu(som)-conv(som)*inv_rho-diff(som)*rapport;
        }
      eqn.solv_masse().appliquer(diff);
      double err=mp_max_abs_vect(diff);
      Cerr << eqn.que_suis_je() <<" : Assembly error = " << err << finl;
 
      if (err > 1.e-5)
        {
          DoubleVect& diff_=diff;
          Cerr<<" size "<< diff_.size()<<finl;
          for (int i=0; i<diff_.size(); i++)
            if (std::fabs(diff_(i))>1e-5) Cerr<<i << " "<< diff_(i)<< " "<<finl;
 
          if (test_op==1)
            {
              Cerr<<" problem max cell "<<imin_array(diff)<<" or " <<imax_array(diff)<<finl;
              Process::exit();
            }
        }
    }
} /* END assembler_impl */
 
void Convection_Diffusion_Fluide_Dilatable_Proto::assembler_blocs(Convection_Diffusion_Fluide_Dilatable_base& eqn,matrices_t matrices, DoubleTab& secmem, const tabs_t& semi_impl)
{
  const std::string& nom_inco = eqn.inconnue().le_nom().getString();
  Matrice_Morse *mat = matrices.count(nom_inco)?matrices.at(nom_inco):nullptr;
 
  Fluide_Dilatable_base& fluide_dil = eqn.fluide();
  const DoubleTab& tab_rho = fluide_dil.masse_volumique().valeurs();
  const int n = tab_rho.dimension(0);
 
  Matrice_Morse mat_diff(*mat);
  DoubleTab secmem_tmp(secmem);
  eqn.operateur(0).l_op_base().ajouter_blocs({{nom_inco, &mat_diff}}, secmem_tmp, semi_impl);
  statistics().end_count(STD_COUNTERS::ajouter_blocs);
 
  statistics().begin_count(STD_COUNTERS::source_terms,statistics().get_last_opened_counter_level()+1);
  for (int i = 0; i < eqn.sources().size(); i++)
    eqn.sources()(i)->ajouter_blocs({{nom_inco, &mat_diff}}, secmem_tmp, semi_impl);
  statistics().end_count(STD_COUNTERS::source_terms);
 
  statistics().begin_count(STD_COUNTERS::ajouter_blocs,statistics().get_last_opened_counter_level()+1);
  auto& coeff_diffusif = mat_diff.get_set_coeff();
 
  const auto& tab1 = mat->get_tab1();
  auto& coeff = mat->get_set_coeff();
  coeff = 0;
  eqn.operateur(1).l_op_base().ajouter_blocs(matrices, secmem_tmp, semi_impl);
 
  // compute div(rho * u)
  calculer_div_u_ou_div_rhou(secmem);
 
  if (!is_thermal()) //espece
    {
      for (int som=0 ; som<n ; som++)
        {
          double inv_rho = 1. / tab_rho(som);
          for (auto k=tab1(som)-1; k<tab1(som+1)-1; k++) coeff(k)= (coeff(k)*inv_rho+coeff_diffusif(k)*inv_rho);
 
          if(mat) (*mat)(som,som)+=secmem(som)*inv_rho;
        }
    }
  else if (is_thermal() && fluide_dil.type_fluide()=="Gaz_Parfait")
    {
      fluide_dil.update_rho_cp(eqn.schema_temps().temps_courant());
      const DoubleTab& rhoCp = eqn.get_champ("rho_cp_comme_T").valeurs();
 
      for (int som=0 ; som<n ; som++)
        {
          double inv_rho = 1. / tab_rho(som);
          if (!is_generic()) inv_rho = 1.;
          double rapport = 1. / rhoCp(som);
 
          // multiply the whole matrix row by the ratio
          for (auto k=tab1(som)-1; k<tab1(som+1)-1; k++) coeff(k)= (coeff(k)*inv_rho+coeff_diffusif(k)*rapport);
 
          // add T*div(rho*u)/rho
          if(mat) (*mat)(som,som) += secmem(som)*inv_rho;
        }
    }
  else
    {
      Cerr<<"The implicit algorithm is available only for perfect gas."<<finl;
      Process::exit();
    }
 
  // we have the approximate matrix, now recompute the residual;
  secmem=0;
  derivee_en_temps_inco_sans_solveur_masse_impl(eqn,secmem,false /* implicit */);
  if(mat) mat->ajouter_multvect(eqn.inconnue().valeurs(),secmem);
}
 
/*
 * Methodes statiques
 */
 
std::vector<YAML_data> Convection_Diffusion_Fluide_Dilatable_Proto::data_a_sauvegarder(const Convection_Diffusion_std& eq, const Fluide_Dilatable_base& fld)
{
  std::vector<YAML_data> data = eq.data_a_sauvegarder_base();
 
  Fluide_Weakly_Compressible& FWC = ref_cast_non_const(Fluide_Weakly_Compressible,fld);
  OWN_PTR(Champ_Inc_base) p_tab = FWC.inco_chaleur(); // Initialize with same discretization
  std::string name = eq.probleme().le_nom().getString() + "_Pression_EOS";
  int nb_dim = p_tab->valeurs().nb_dim();
  YAML_data pressure(name, "double", nb_dim);
  data.push_back(pressure);
  return data;
}
 
int Convection_Diffusion_Fluide_Dilatable_Proto::Sauvegarder_WC(Sortie& os,
                                                                const Convection_Diffusion_std& eq,
                                                                const Fluide_Dilatable_base& fld)
{
  int bytes=0,a_faire,special;
  bytes += eq.sauvegarder_base(os); // XXX: see Convection_Diffusion_std
  EcritureLectureSpecial::is_ecriture_special(special,a_faire);
 
  Fluide_Weakly_Compressible& FWC = ref_cast_non_const(Fluide_Weakly_Compressible,fld);
  if (a_faire)
    {
      OWN_PTR(Champ_Inc_base) p_tab = FWC.inco_chaleur(); // Initialize with same discretization
      p_tab->nommer("Pression_EOS");
      p_tab->valeurs() = FWC.pression_th_tab(); // Use good values
      if (special && Process::is_parallel())
        Cerr << "ATTENTION : For a parallel calculation, the field Pression_EOS is not saved in xyz format ... " << finl;
      else
        bytes += p_tab->sauvegarder(os);
    }
  else if (TRUST_2_PDI::is_PDI_checkpoint())
    {
      // Different treatment with PDI as the backup will be triggered later, so we can't share a temporary pointer...
      const DoubleTab& p_th_tab = FWC.pression_th_tab();
      std::string name = eq.probleme().le_nom().getString() + "_Pression_EOS";
 
      // Sharing the dimensions of the unknown field with PDI
      TRUST_2_PDI pdi_interface;
      pdi_interface.share_TRUSTTab_dimensions(p_th_tab, name, 1 /*write mode*/);
      // Sharing the unknown field with PDI
      if( p_th_tab.dimension_tot(0) )
        pdi_interface.TRUST_start_sharing(name, p_th_tab.addr());
      else
        {
          ArrOfDouble garbage( p_th_tab.nb_dim() );
          pdi_interface.TRUST_start_sharing(name, garbage.addr());
        }
 
      bytes = 8 * p_th_tab.size_array();
    }
 
  return bytes;
}
 
int Convection_Diffusion_Fluide_Dilatable_Proto::Reprendre_WC(Entree& is,
                                                              double temps,
                                                              Convection_Diffusion_std& eq,
                                                              Fluide_Dilatable_base& fld,
                                                              Champ_Inc_base& inco,
                                                              Probleme_base& pb)
{
  // start resuming
  eq.reprendre_base(is); // XXX: see Convection_Diffusion_std
 
  // XXX : should be set so that Pression_EOS is read and not initialized from data file
  Fluide_Weakly_Compressible& FWC = ref_cast(Fluide_Weakly_Compressible,fld);
  FWC.set_resume_flag();
  // resume EOS pressure field
  OWN_PTR(Champ_Inc_base) p_tab = FWC.inco_chaleur(); // Initialize with same discretization
 
  p_tab->nommer("Pression_EOS");
  if (EcritureLectureSpecial::is_lecture_special() && Process::is_parallel())
    {
      Cerr << "Error in Convection_Diffusion_Espece_Binaire_WC::reprendre !" << finl;
      Cerr << "Use the sauv file to resume a parallel WC calculation (Pression_EOS is required) ... " << finl;
      Process::exit();
    }
  else
    {
      if(!TRUST_2_PDI::is_PDI_restart())
        {
          Nom field_tag(p_tab->le_nom());
          field_tag += p_tab->que_suis_je();
          field_tag += pb.domaine().le_nom();
          field_tag += Nom(temps,pb.reprise_format_temps());
          if (pb.discretisation().is_poly_family())
            {
              Nom field_tag_syno = eq.create_polymacfamily_syno(field_tag);
              avancer_fichier_with_syno(is,field_tag,field_tag_syno);
            }
          // end of the backward compatibility
          else
            avancer_fichier(is,field_tag);
        }
      p_tab->reprendre(is);
    }
 
  // set good field
  FWC.set_pression_th_tab(p_tab->valeurs());
 
  return 1;
}