Perte_Charge_VDF_base.cpp

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#include <Multiplicateur_diphasique_base.h>
#include <Fluide_Incompressible.h>
#include <Perte_Charge_VDF_base.h>
#include <Schema_Temps_base.h>
#include <Milieu_composite.h>
#include <Champ_Uniforme.h>
#include <QDM_Multiphase.h>
#include <Champ_Face_VDF.h>
#include <Domaine_Cl_VDF.h>
#include <Equation_base.h>
#include <Pb_Multiphase.h>
#include <Probleme_base.h>
#include <Sous_Domaine.h>
#include <Domaine_VDF.h>
#include <Param.h>
 
Implemente_base(Perte_Charge_VDF_base, "Perte_Charge_VDF_base", Perte_Charge_Gen);
 
Sortie& Perte_Charge_VDF_base::printOn(Sortie& s) const { return s << que_suis_je() << finl; }
 
Entree& Perte_Charge_VDF_base::readOn(Entree& is) { return Perte_Charge_Gen::readOn(is); }
 
void Perte_Charge_VDF_base::ajouter_blocs(matrices_t matrices, DoubleTab& secmem, const tabs_t& semi_impl) const
{
  const Domaine_VDF& domaine = ref_cast(Domaine_VDF, equation().domaine_dis());
  const Pb_Multiphase *pbm = sub_type(Pb_Multiphase, equation().probleme()) ? &ref_cast(Pb_Multiphase, equation().probleme()) : nullptr;
  const Champ_Face_VDF& ch = ref_cast(Champ_Face_VDF, equation().inconnue());
  const Champ_Don_base& dh = diam_hydr;
 
  const DoubleTab& xp = domaine.xp(),&xv = domaine.xv(),
                   &vit = la_vitesse->valeurs(),
                    &pvit = la_vitesse->passe(),
                     &nu = le_fluide->viscosite_cinematique().valeurs(),
                      &vfd = domaine.volumes_entrelaces_dir(),
                       &mu = le_fluide->viscosite_dynamique().valeurs(),
                        &rho = le_fluide->masse_volumique().passe(),
                         *alp = pbm ? &pbm->equation_masse().inconnue().passe() : nullptr;
 
  const DoubleVect& pe = le_fluide->porosite_elem(),& pf = le_fluide->porosite_face(),
                    &fs = domaine.face_surfaces(), &ve = domaine.volumes();
 
  const Multiplicateur_diphasique_base *fmult = pbm && pbm->has_correlation("multiplicateur_diphasique") ?
                                                &ref_cast(Multiplicateur_diphasique_base, pbm->get_correlation("multiplicateur_diphasique")) : nullptr;
 
  const Sous_Domaine *pssz = sous_domaine ? &le_sous_domaine.valeur() : nullptr;
 
  const IntTab& e_f = domaine.elem_faces(), &f_e = domaine.face_voisins(), &fcl = ch.fcl();
 
  Matrice_Morse *mat = matrices.count(ch.le_nom().getString()) ? matrices.at(ch.le_nom().getString()) : nullptr;
 
  const int D = dimension, cN = nu.dimension(0) == 1, cM = mu.dimension(0) == 1,
            cR = rho.dimension(0) == 1, C_dh = sub_type(Champ_Uniforme, diam_hydr.valeur()),
            N = vit.line_size();
 
  double t = equation().schema_temps().temps_courant(), v_min = 0.1;
  DoubleTrav pos(D), v(N, D), vm(D), v_ph(D), dir(D), nv(N), Cf(N), Cf_t(N), Fk(N), G(N), mult(N, 2), Sigma_tab;
 
  for (int n = 0; n < N; n++)
    mult(n, 0) = 1, mult(n, 1) = 0; //default value of mult
 
  if (fmult) //if multiplier -> compute sigma
    {
      const Milieu_composite& milc = ref_cast(Milieu_composite, equation().milieu());
      // For the span methods of the Saturation class
      const int ne_tot = domaine.nb_elem_tot(), nb_max_sat =  N * (N-1) /2; // yes!! arithmetic sequence!!
      Sigma_tab.resize(ne_tot, nb_max_sat);
      for (int k = 0; k < N; k++)
        for (int l = k + 1; l < N; l++)
          if (milc.has_saturation(k, l))
            {
              const Saturation_base& z_sat = milc.get_saturation(k, l);
              const int ind_trav = (k*(N-1)-(k-1)*(k)/2) + (l-k-1); // Yes! upper triangular matrix!
              // retrieve Tsat and sigma ...
              const DoubleTab& sig = z_sat.get_sigma_tab();
 
              // fill in the good case
              for (int ii = 0; ii < ne_tot; ii++)
                Sigma_tab(ii, ind_trav) = sig(ii);
            }
    }
 
  /* contribution de chaque element ou on applique la perte de charge */
  for (int i = 0; i < (pssz ? pssz->nb_elem_tot() : domaine.nb_elem_tot()); i++)
    {
      int e = pssz ? (*pssz)[i] : i;
      for (int d = 0; d < D; d++)
        pos(d) = xp(e, d);
 
      /* vecteur vitesse en e */
      double dh_e = C_dh ? dh.valeurs()(0, 0) : dh.valeur_a_compo(pos, 0);
 
      v = 0.;
      for (int j = 0; j < e_f.dimension(1); j++)
        {
          const int f = e_f(e, j);
          for (int d = 0; d < D; d++)
            for (int n = 0; n < N; n++)
              v(n, d) += fs(f) * pf(f) / (ve(e) * pe(e)) * (xv(f, d) - xp(e, d)) * (e == f_e(f, 0) ? 1 : -1) * pvit(f, n);
        }
 
 
      /* norme de v (avec seuil), debit surfacique par phase et total */
      double Gm = 0.;
      for (int n = 0; n < N; Gm += G(n), n++)
        {
          nv(n) = std::max(v_min, sqrt(domaine.dot(&v(n, 0), &v(n, 0))));
          G(n) = (alp ? (*alp)(e, n) : 1) * rho(!cR * e, n) * nv(n);
        }
 
      double arm = 0.;
      for (int n = 0; n < N; n++)
        {
          arm += (alp ? (*alp)(e, n) : 1) * rho(!cR * e, n);
 
          for (int d = 0; d < D; d++)
            vm(d) += (alp ? (*alp)(e, n) : 1) * rho(!cR * e, n) * v(n, d);
        }
 
      for (int d = 0; d < D; d++)
        vm(d) /= arm;
 
      double nvm = std::max(v_min, sqrt(domaine.dot(&vm(0), &vm(0))));
      double C_iso, C_dir, v_dir;
 
      /* coefficients de frottements par composante : Cf(n) (phase seule), Cf_t(n) (le debit total dans cette phase) */
      for (int n = 0; n < N; n++)
        {
          double Re = dh_e * std::max(G(n), 1e-10) / mu(!cM * e, n),
                 Re_m = dh_e * Gm / mu(!cM * e, n);
 
          for (int d = 0; d < D; d++)
            v_ph(d) = v(n, d);
 
          /* phase seule */
          coeffs_perte_charge(v_ph, pos, t, nv(n), dh_e, nu(!cN * e, n), Re, C_iso, C_dir, v_dir, dir);
 
          Cf(n) = (C_iso + (C_dir - C_iso) * (nv(n) > 1e-8 ? std::pow(domaine.dot(&v(n, 0), &dir(0)), 2) / (nv(n) * nv(n)) : 0)) * 2 * dh_e / std::max(nv(n), 1e-10);
 
          /* tout le melange dans la phase */
          coeffs_perte_charge(vm, pos, t, nvm, dh_e, nu(!cN * e, n), Re_m, C_iso, C_dir, v_dir, dir);
 
          Cf_t(n) = (C_iso + (C_dir - C_iso) * (nvm > 1e-8 ? std::pow(domaine.dot(&vm(0), &dir(0)), 2) / (nvm * nvm) : 0)) * 2 * dh_e / std::max(nvm, 1e-10);
 
          Fk(n) = Cf(n) * G(n) * G(n) / rho(!cR * e, n) / 2.0 / dh_e; //force
        }
      double Fm = Cf_t(0) * Gm * Gm / rho(!cR * e, 0) / 2.0 / dh_e; //wall "mixture" force (total flow rate, but physical properties of the liquid)
 
      /* appel du multiplicateur diphasique (si il existe) */
      if (fmult)
        fmult->coefficient(&(*alp)(e, 0), &rho(!cR * e, 0), &nv(0), &Cf_t(0), &mu(!cM * e, 0), dh_e, Sigma_tab(e,0), &Fk(0), Fm, mult);
 
      /* contributions aux faces de e */
      for (int j = 0; j < e_f.dimension(1); j++)
        {
          const int f = e_f(e, j);
 
          if (f < domaine.nb_faces() && (fcl(f, 0) < 2))
            for (int n = 0; n < N; n++)
              {
                int e1 = f_e(f, 0);
                if (e1 < 0) e1 = f_e(f, 1);
 
                double fac = pf(f) * vfd(f, e != e1) * 0.5 / dh_e;
                double fac_n = fac * mult(n, 0) * Cf(n) * nv(n);
                double fac_m = fac * mult(n, 1) * Cf_t(n) * Gm / rho(!cR * e, n);
 
                for (int m = 0; m < N; m++)
                  secmem(f, n) -= ((m == n) * fac_n + fac_m) * (alp ? (*alp)(e, m) : 1) * (pbm ? rho(!cR * e, m) : 1) * vit(f, m);
 
                if (mat)
                  for (int m = 0; m < N; m++)
                    (*mat)(N * f + n, N * f + m) += ((m == n) * fac_n + fac_m) * (alp ? (*alp)(e, m) : 1) * (pbm ? rho(!cR * e, m) : 1);
              }
        }
    }
}