artificial_viscosity_limiter.h

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#ifndef WXM_APPS_MHD_ARTIFICIAL_VISCOSITY_LIMITER_H
#define WXM_APPS_MHD_ARTIFICIAL_VISCOSITY_LIMITER_H
 
// Wm includes
#include "apps/wmapplication.h"
 
namespace wxm
{
namespace apps
{
namespace mhd
{
namespace limiters
{
 
class ArtificialViscosityLimiter : public WmApplication
{
public:
    ArtificialViscosityLimiter();
 
    ~ArtificialViscosityLimiter();
 
    const std::vector<int>& getInputVariableIndexes(int flag) const override
    {
        return _input_variables;
    }
 
    const std::vector<int>& getAuxiliaryVariableIndexes(int flag) const override
    {
        return _aux_variables;
    }
 
    const std::vector<int>& getOutputVariableIndexes(int flag) const override
    {
        return _output_variables;
    }
 
    void setup(const WxCryptSet& wxc) override;
 
    real numerical_flux(const real* q_l,
                        const real* q_r,
                        const real* aux_l,
                        const real* aux_r,
                        const solverVariables_t* pFV,
                        real* numericalFlux) const override;
 
    real internal_flux(const real* q,
                       const real* aux,
                       const solverVariables_t* pSV,
                       std::vector<std::vector<real>>& internalFlux) const override;
 
    real numerical_flux_ldg(const real* q_l,
                            const real* q_r,
                            const real* aux_l,
                            const real* aux_r,
                            const solverVariables_t* pFV,
                            real* numericalFlux) const;
 
    real numerical_flux_ip(const real* q_l,
                           const real* q_r,
                           const real* aux_l,
                           const real* aux_r,
                           const solverVariables_t* pFV,
                           real* numericalFlux) const;
 
protected:
    // viscous multiplier of the limiter
    real _coefficient;
    // gradient calculation method ("ip" or "ldg")
    std::string _gradient_method;
    // diffusion factor multiplier ("fabs" or "squared")
    std::string _diffusion_factor;
 
    std::vector<int> _input_variables;
    std::vector<int> _aux_variables;
    std::vector<int> _output_variables;
};
 
} // namespace limiters
} // namespace mhd
} // namespace apps
} // namespace wxm
 
#endif // WXM_APPS_MHD_ARTIFICIAL_VISCOSITY_LIMITER_H