Advances the incoming acoustic wave w- = p - rho c u_n of every characteristic face by one forward-Euler step of the LODI relation (Poinsot & Lele 1992) at the face, with the transverse terms relaxed by beta (Lodato, Domingo & Vervisch 2008): dw-/dt = -K (p - p_t) - beta T- (outlets) dw-/dt = K rho c (u_n - u_n,t) - rho c du_n,t/dt - beta T- (inlets) with K = sigma c (1 - M^2) / L (K dt capped at 1). The inlet's target u_n,t may vary in time (synthetic turbulence): its own incoming wave -rho c du_n,t/dt over the step (char_target_next - char_target) then enters without reflecting outgoing waves (Guezennec & Poinsot 2009). On outlet faces with reversed flow (u_n < 0), beta = 0. The face keeps its pressure and normal velocity (char_state), which are continuous at contacts, and the outgoing wave comes from the reconstructed interior state averaged over the face. Faces of supersonic outflow follow the interior; with initialize, the face starts from the interior state. More...

#include <characteristic.h>

Public Member Functions
KOKKOS_INLINE_FUNCTION void	operator() (const uint32_t k) const

Public Attributes
BoundaryData	boundaries

Kokkos::View< rtype *[N_DIM]>	face_normals

Kokkos::View< rtype **[2][N_CONSERVATIVE]>	face_solution

Kokkos::View< rtype **[2][2]>	face_thermo

Kokkos::View< rtype * >	quad_weights

Kokkos::View< rtype ** >	face_weights

rtype	dt

bool	initialize

Detailed Description

Advances the incoming acoustic wave w- = p - rho c u_n of every characteristic face by one forward-Euler step of the LODI relation (Poinsot & Lele 1992) at the face, with the transverse terms relaxed by beta (Lodato, Domingo & Vervisch 2008): dw-/dt = -K (p - p_t) - beta T- (outlets) dw-/dt = K rho c (u_n - u_n,t) - rho c du_n,t/dt - beta T- (inlets) with K = sigma c (1 - M^2) / L (K dt capped at 1). The inlet's target u_n,t may vary in time (synthetic turbulence): its own incoming wave -rho c du_n,t/dt over the step (char_target_next - char_target) then enters without reflecting outgoing waves (Guezennec & Poinsot 2009). On outlet faces with reversed flow (u_n < 0), beta = 0. The face keeps its pressure and normal velocity (char_state), which are continuous at contacts, and the outgoing wave comes from the reconstructed interior state averaged over the face. Faces of supersonic outflow follow the interior; with initialize, the face starts from the interior state.

Member Function Documentation

◆ operator()()

KOKKOS_INLINE_FUNCTION void CharacteristicStateFunctor::operator() ( const uint32_t k ) const

inline

Member Data Documentation

◆ boundaries

BoundaryData CharacteristicStateFunctor::boundaries

◆ dt

rtype CharacteristicStateFunctor::dt

◆ face_normals

Kokkos::View<rtype *[N_DIM]> CharacteristicStateFunctor::face_normals

◆ face_solution

Kokkos::View<rtype **[2][N_CONSERVATIVE]> CharacteristicStateFunctor::face_solution

◆ face_thermo

Kokkos::View<rtype **[2][2]> CharacteristicStateFunctor::face_thermo

◆ face_weights

Kokkos::View<rtype **> CharacteristicStateFunctor::face_weights

◆ initialize

bool CharacteristicStateFunctor::initialize

◆ quad_weights

Kokkos::View<rtype *> CharacteristicStateFunctor::quad_weights

The documentation for this struct was generated from the following file:

/home/runner/work/mallard/mallard/mallard/src/numerics/characteristic.h

Public Member Functions

Public Attributes