VertexCFD_Closure_VariableDiffusionFlux.hpp

#ifndef VERTEXCFD_CLOSURE_VARIABLEDIFFUSIONFLUX_HPP
#define VERTEXCFD_CLOSURE_VARIABLEDIFFUSIONFLUX_HPP
 
#include <Panzer_Dimension.hpp>
#include <Panzer_Evaluator_WithBaseImpl.hpp>
 
#include <Phalanx_Evaluator_Derived.hpp>
#include <Phalanx_Evaluator_WithBaseImpl.hpp>
#include <Phalanx_FieldManager.hpp>
#include <Phalanx_config.hpp>
 
#include <Kokkos_Core.hpp>
 
#include <string>
 
namespace VertexCFD
{
namespace ClosureModel
{
//---------------------------------------------------------------------------//
// Diffusion term for convective-diffusion equation
//---------------------------------------------------------------------------//
template<class EvalType, class Traits>
class VariableDiffusionFlux : public panzer::EvaluatorWithBaseImpl<Traits>,
                              public PHX::EvaluatorDerived<EvalType, Traits>
{
  public:
    using scalar_type = typename EvalType::ScalarT;
 
    VariableDiffusionFlux(const panzer::IntegrationRule& ir,
                          const Teuchos::ParameterList& closure_params,
                          const std::string& flux_prefix = "",
                          const std::string& gradient_prefix = "");
 
    void evaluateFields(typename Traits::EvalData workset) override;
 
    KOKKOS_INLINE_FUNCTION
    void operator()(
        const Kokkos::TeamPolicy<PHX::exec_space>::member_type& team) const;
 
  private:
    std::string _variable_name;
    std::string _equation_name;
 
  public:
    PHX::MDField<scalar_type, panzer::Cell, panzer::Point, panzer::Dim>
        _var_diff_flux;
 
  private:
    PHX::MDField<const scalar_type, panzer::Cell, panzer::Point> _diffusivity_var;
    PHX::MDField<const scalar_type, panzer::Cell, panzer::Point, panzer::Dim>
        _grad_var;
};
 
//---------------------------------------------------------------------------//
 
} // end namespace ClosureModel
} // end namespace VertexCFD
 
#endif // end VERTEXCFD_CLOSURE_VARIABLEDIFFUSIONFLUX_HPP