Operateur_IJK_data_channel.cpp

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#include <Operateur_IJK_data_channel.h>
 
void Operateur_IJK_data_channel::initialize(const Domaine_IJK& grid_geom)
{
 
  nb_elem_k_tot_ = grid_geom.get_nb_elem_tot(2);
  offset_to_global_k_layer_ = grid_geom.get_offset_local(2);
  delta_x_ = grid_geom.get_constant_delta(0);
  delta_y_ = grid_geom.get_constant_delta(1);
 
  grid_geom.get_local_mesh_delta(2 /*direction*/, 2 /* number of ghost cells to get */, delta_z_);
 
  inv_delta_x_ = 1. / delta_x_;
  inv_delta_y_ = 1. / delta_y_;
  {
    const int n = delta_z_.size();
    inv_elem_size_z_.resize(n, 1);
    for (int i = -1; i < n+1; i++)
      inv_elem_size_z_[i] = 1. / delta_z_[i];
    inv_dist_z_elemcenter_.resize(n+1,0); // neither
    for (int i = 0; i < n+1; i++)
      {
        const int global_k = i + offset_to_global_k_layer_;
        if (global_k == first_global_k_layer_flux(0, 2) - 1)
          {
            // bottom wall
            inv_dist_z_elemcenter_[i] = 2. / delta_z_[i];
          }
        else if (global_k == last_global_k_layer_flux(0, 2) + 1)
          {
            // top wall
            inv_dist_z_elemcenter_[i] = 2. / delta_z_[i-1];
          }
        else
          {
            inv_dist_z_elemcenter_[i] = 2. / (delta_z_[i-1] + delta_z_[i]);
          }
      }
  }
 
  perio_k_ = grid_geom.get_periodic_flag(2);
  uniform_k_ = grid_geom.is_uniform(2);
}