Convection_Diffusion_Fluide_Dilatable_Proto.cpp

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#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;
    }
 
  // on cherche a changer temporairement le domaine_cl
  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 Renvoie la derivee en temps de l'inconnue de l'equation.
 *
 * Le calcul est le suivant:
 *          d(inconnue)/dt = M^{-1} * (sources - somme(Op_{i}(inconnue))) / rho
 *
 * @param (DoubleTab& derivee) le tableau des valeurs de la derivee en temps du champ inconnu
 * @return (DoubleTab&) le tableau des valeurs de la derivee en temps du champ inconnu
 */
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);
 
  // On divise derivee par rho si espece ou gaz reel... sinon par 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;
 
  // si schema implicite
  if (!is_expl && has_mass_flux)
    derivee += mass_source_term; // pour ca on traite le volume par le solveur de masse plus tard ...
 
  if (diffusion_implicite)
    {
      const DoubleTab& Tfutur=eqn.inconnue().futur();
      DoubleTrav secmem(derivee);
      secmem=derivee; // sans contribution terme source
      eqn.solv_masse().appliquer(secmem);
 
      if (has_mass_flux)
        secmem += mass_source_term ; // ajoute contribution terme source (deja divise par 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% explicite
  if (!sch.diffusion_implicite() && is_expl)
    {
      eqn.solv_masse().appliquer(derivee);
 
      if (has_mass_flux)
        derivee += mass_source_term; // ajoute contribution terme source (deja divise par 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
  // Je garde ce test pour debug ... TODO : a voir si on peut virer tout ca...
  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);
 
  // ajout diffusion (avec rho, D et Y / ou lambda et 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();
 
  // on calcule les coefficients de l'op de convection on obtient les coeff de div (rho*u*Y)
  // ou div(rho*u*T). dans le cas thermique, il faudrait multiplier par cp puis divisier par rho cp
  // on le fera d'un coup...
  matrice_morse.get_set_coeff()=0.;
  eqn.operateur(1).l_op_base().contribuer_a_avec(inco, matrice_morse);
 
  // on calcule 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);
 
        // il faut multiplier toute la ligne de la matrice par rapport
        for (auto k=tab1(som)-1; k<tab1(som+1)-1; k++)
          coeff(k)= (coeff(k)*inv_rho+coeff_diffusif(k)*rapport);
 
        // ajout de Tdiv(rhou )/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();
    }
 
  // on a la matrice approchee on recalcule le residu;
  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() <<" : Erreur assemblage = " << 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<<" pb max case "<<imin_array(diff)<<" ou " <<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);
 
  // on calcule 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);
 
          // il faut multiplier toute la ligne de la matrice par rapport
          for (auto k=tab1(som)-1; k<tab1(som+1)-1; k++) coeff(k)= (coeff(k)*inv_rho+coeff_diffusif(k)*rapport);
 
          // ajout de Tdiv(rhou )/rho
          if(mat) (*mat)(som,som) += secmem(som)*inv_rho;
        }
    }
  else
    {
      Cerr<<"The implicit algorithm is available only for perfect gas."<<finl;
      Process::exit();
    }
 
  // on a la matrice approchee on recalcule le residu;
  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 : voir 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 : voir 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;
}