Vitesse_derive_base.cpp

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#include <Vitesse_derive_base.h>
 
Implemente_base(Vitesse_derive_base, "Vitesse_relative_derive_base", Vitesse_relative_base);
 
Sortie& Vitesse_derive_base::printOn(Sortie& os) const { return Vitesse_relative_base::printOn(os); }
Entree& Vitesse_derive_base::readOn(Entree& is)
{
  vg0.resize(dimension);
  return Vitesse_relative_base::readOn(is);
}
 
void Vitesse_derive_base::set_param(Param& param) const
{
  param.ajouter("alpha_min", &alpha_min_);
  Vitesse_relative_base::set_param(param);
}
 
void Vitesse_derive_base::vitesse_relative(const input_t& input, output_t& output) const
{
  output.vr = 0.0;
  output.dvr= 0.0;
 
  if (input.alpha[n_g] < alpha_min_) return;
 
  evaluate_C0_vg0(input); // No dependency in v in evaluate_C0_vg0 => No need for derivative
 
  for (int d = 0; d < dimension; d++)
    {
      output.vr(n_g, n_l, d) = ((C0 - 1.0) * input.v(d, n_l) + vg0(d)) / (1.0 - C0 * input.alpha(n_g));
      output.vr(n_l, n_g, d) = - output.vr(n_g, n_l, d);
 
      output.dvr(n_g, n_l, d, dimension*n_l+d) =  (C0 - 1.0) / (1.0 - C0 * input.alpha(n_g));
      output.dvr(n_l, n_g, d, dimension*n_l+d) = -(C0 - 1.0) / (1.0 - C0 * input.alpha(n_g));
    }
}