ViscousFluxFunctor Struct Reference

Integrates the viscous stress and heat flux over every face (one-point rule) and adds them to face_flux (see ConvectiveFluxFunctor). More...

#include <viscous_flux.h>

Public Member Functions
KOKKOS_INLINE_FUNCTION void	cell_state (const int32_t c, rtype *q, rtype g[NQ][N_DIM]) const
	Velocity and temperature q = [u, T] of cell c, and their gradients g[k][i] = d q_k / d x_i, from W = [rho, u, p] and its gradient.
KOKKOS_INLINE_FUNCTION void	interior_face (const uint32_t i_face, rtype *q_f, rtype g_f[NQ][N_DIM]) const
	Values and gradients q_f, g_f on interior face i_face.
KOKKOS_INLINE_FUNCTION void	operator() (const uint32_t i_face) const

Public Attributes
Kokkos::View< rtype *[N_DIM]>	normals
Kokkos::View< rtype * >	face_area
Kokkos::View< rtype *[N_DIM]>	face_coords
Kokkos::View< rtype *[N_DIM]>	cell_coords
Kokkos::View< int32_t *[2]>	cells_of_face
Kokkos::View< rtype *[N_DIM]>	shifts
Kokkos::View< uint8_t * >	face_shift
Kokkos::View< rtype *[N_CONSERVATIVE]>	W
Kokkos::View< rtype *[N_CONSERVATIVE][N_DIM]>	gradients
BoundaryData	boundaries
Kokkos::View< rtype *[N_CONSERVATIVE]>	face_flux
Euler	physics
bool	axisymmetric = false
Kokkos::View< rtype *[3]>	covariance
Kokkos::View< rtype *[3]>	sgs
bool	sgs_only = false

Static Public Attributes
static constexpr uint8_t	NQ = N_DIM + 1

Detailed Description

Integrates the viscous stress and heat flux over every face (one-point rule) and adds them to face_flux (see ConvectiveFluxFunctor).

Face gradients of velocity and temperature average the two cell gradients and correct them along the face normal so that their component along the line between the cell centroids equals the direct difference, which suppresses odd-even decoupling and stays accurate on non-orthogonal (e.g. triangular) meshes where that line is not aligned with the normal. Walls use a one-sided difference between the cell centroid and the wall with the wall velocity and, for isothermal walls, the wall temperature; adiabatic walls carry no heat flux and heat-flux walls carry the prescribed one. Symmetry faces carry no shear stress and no heat flux. Transmissive faces take the values and gradients of their image face (see BoundaryData::exterior_W), which is what an interior face sees for a flow that does not vary normal to the boundary; using the boundary cell's own gradient instead is off by O(h) on triangles, whose centroids are offset along the face. Transmissive faces without an image and outflow faces use zero normal derivatives.

Member Function Documentation

cell_state()

KOKKOS_INLINE_FUNCTION void ViscousFluxFunctor::cell_state ( const int32_t  c, rtype *  q, rtype  g[NQ][N_DIM]  ) const

inline

Velocity and temperature q = [u, T] of cell c, and their gradients g[k][i] = d q_k / d x_i, from W = [rho, u, p] and its gradient.

interior_face()

KOKKOS_INLINE_FUNCTION void ViscousFluxFunctor::interior_face ( const uint32_t  i_face, rtype *  q_f, rtype  g_f[NQ][N_DIM]  ) const

inline

Values and gradients q_f, g_f on interior face i_face.

operator()()

KOKKOS_INLINE_FUNCTION void ViscousFluxFunctor::operator() ( const uint32_t  i_face ) const

inline

Member Data Documentation

axisymmetric

bool ViscousFluxFunctor::axisymmetric = false

boundaries

BoundaryData ViscousFluxFunctor::boundaries

cell_coords

Kokkos::View<rtype *[N_DIM]> ViscousFluxFunctor::cell_coords

cells_of_face

Kokkos::View<int32_t *[2]> ViscousFluxFunctor::cells_of_face

covariance

Kokkos::View<rtype *[3]> ViscousFluxFunctor::covariance

face_area

Kokkos::View<rtype *> ViscousFluxFunctor::face_area

face_coords

Kokkos::View<rtype *[N_DIM]> ViscousFluxFunctor::face_coords

face_flux

Kokkos::View<rtype *[N_CONSERVATIVE]> ViscousFluxFunctor::face_flux

face_shift

Kokkos::View<uint8_t *> ViscousFluxFunctor::face_shift

gradients

Kokkos::View<rtype *[N_CONSERVATIVE][N_DIM]> ViscousFluxFunctor::gradients

normals

Kokkos::View<rtype *[N_DIM]> ViscousFluxFunctor::normals

NQ

constexpr uint8_t ViscousFluxFunctor::NQ = N_DIM + 1

staticconstexpr

physics

Euler ViscousFluxFunctor::physics

sgs

Kokkos::View<rtype *[3]> ViscousFluxFunctor::sgs

sgs_only

bool ViscousFluxFunctor::sgs_only = false

shifts

Kokkos::View<rtype *[N_DIM]> ViscousFluxFunctor::shifts

W

Kokkos::View<rtype *[N_CONSERVATIVE]> ViscousFluxFunctor::W

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

• /home/runner/work/mallard/mallard/mallard/src/numerics/viscous_flux.h