VertexCFD_Closure_IncompressibleWALEEddyViscosity.hpp

#ifndef VERTEXCFD_CLOSURE_INCOMPRESSIBLEWALEEDDYVISCOSITY_HPP
#define VERTEXCFD_CLOSURE_INCOMPRESSIBLEWALEEDDYVISCOSITY_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>
 
namespace VertexCFD
{
namespace ClosureModel
{
//---------------------------------------------------------------------------//
// Turbulent eddy viscosity for WALE LES turbulence model
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
class IncompressibleWALEEddyViscosity
    : public panzer::EvaluatorWithBaseImpl<Traits>,
      public PHX::EvaluatorDerived<EvalType, Traits>
{
  public:
    using scalar_type = typename EvalType::ScalarT;
    static constexpr int num_space_dim = NumSpaceDim;
 
    IncompressibleWALEEddyViscosity(const panzer::IntegrationRule& ir,
                                    const Teuchos::ParameterList& user_params);
 
    void evaluateFields(typename Traits::EvalData workset) override;
 
    KOKKOS_INLINE_FUNCTION
    void operator()(
        const Kokkos::TeamPolicy<PHX::exec_space>::member_type& team) const;
 
  private:
    PHX::MDField<const double, panzer::Cell, panzer::Point, panzer::Dim>
        _element_length;
 
    Kokkos::Array<
        PHX::MDField<const scalar_type, panzer::Cell, panzer::Point, panzer::Dim>,
        num_space_dim>
        _grad_velocity;
 
    double _C_k;
    double _C_w;
 
    enum TmpVars
    {
        MAG_SQR_S,
        MAG_SQR_W,
        MAG_SQR_SD,
        SD_IJ,
        NUM_TMPS
    };
 
    using scratch_view
        = Kokkos::View<scalar_type**,
                       typename PHX::DevLayout<scalar_type>::type,
                       typename PHX::exec_space::scratch_memory_space,
                       Kokkos::MemoryUnmanaged>;
 
  public:
    PHX::MDField<scalar_type, panzer::Cell, panzer::Point> _k_sgs;
    PHX::MDField<scalar_type, panzer::Cell, panzer::Point> _nu_t;
};
 
//---------------------------------------------------------------------------//
 
} // end namespace ClosureModel
} // end namespace VertexCFD
 
#endif // end
       // VERTEXCFD_CLOSURE_INCOMPRESSIBLEWALEEDDYVISCOSITY_HPP