Dumux::NavierStokesMomentumBoundaryFluxHelper Struct Reference

Struct containing flux helper functions to be used in the momentum problem's Neumann function. More...

#include <dumux/freeflow/navierstokes/momentum/fluxhelper.hh>

Description

Struct containing flux helper functions to be used in the momentum problem's Neumann function.

Static Public Member Functions
template<class Problem , class FVElementGeometry , class ElementVolumeVariables , class ElementFluxVariablesCache , class Scalar >
static auto	fixedPressureMomentumFlux (const Problem &problem, const FVElementGeometry &fvGeometry, const typename FVElementGeometry::SubControlVolumeFace &scvf, const ElementVolumeVariables &elemVolVars, const ElementFluxVariablesCache &elemFluxVarsCache, const Scalar pressure, const bool zeroNormalVelocityGradient=true)
	Returns the momentum flux a fixed-pressure boundary. More...
template<class Problem , class FVElementGeometry , class ElementVolumeVariables , class ElementFluxVariablesCache , class TangentialVelocityGradient = double>
static auto	slipVelocityMomentumFlux (const Problem &problem, const FVElementGeometry &fvGeometry, const typename FVElementGeometry::SubControlVolumeFace &scvf, const ElementVolumeVariables &elemVolVars, const ElementFluxVariablesCache &elemFluxVarsCache, const TangentialVelocityGradient &tangentialVelocityGradient=TangentialVelocityGradient(0.0))
	Returns the momentum flux for a boundary with a slip condition. More...

Member Function Documentation

fixedPressureMomentumFlux()

template<class Problem , class FVElementGeometry , class ElementVolumeVariables , class ElementFluxVariablesCache , class Scalar >

static auto Dumux::NavierStokesMomentumBoundaryFluxHelper::fixedPressureMomentumFlux ( const Problem &  problem, const FVElementGeometry &  fvGeometry, const typename FVElementGeometry::SubControlVolumeFace &  scvf, const ElementVolumeVariables &  elemVolVars, const ElementFluxVariablesCache &  elemFluxVarsCache, const Scalar  pressure, const bool  zeroNormalVelocityGradient = true  )

inlinestatic

Returns the momentum flux a fixed-pressure boundary.

Parameters

problem	The problem
fvGeometry	The finite-volume geometry
scvf	The sub control volume face
elemVolVars	The volume variables for the element
elemFluxVarsCache	The flux variables cache for the element
pressure	The pressure given at the boundary
zeroNormalVelocityGradient	If set to false, this yields a "natural" outflow condition where the flow tends to diverge at the boundary. If set to true (default), this yields a "do-nothing" outflow condition where \(\mathbf{v} \cdot \mathbf{n} = 0\) is satisfied and the general flow field is preserved in many cases. See, e.g., https://www.math.uni-magdeburg.de/~richter/WS17/numns/fem.pdf for details.

slipVelocityMomentumFlux()

template<class Problem , class FVElementGeometry , class ElementVolumeVariables , class ElementFluxVariablesCache , class TangentialVelocityGradient = double>

static auto Dumux::NavierStokesMomentumBoundaryFluxHelper::slipVelocityMomentumFlux ( const Problem &  problem, const FVElementGeometry &  fvGeometry, const typename FVElementGeometry::SubControlVolumeFace &  scvf, const ElementVolumeVariables &  elemVolVars, const ElementFluxVariablesCache &  elemFluxVarsCache, const TangentialVelocityGradient &  tangentialVelocityGradient = TangentialVelocityGradient(0.0)  )

inlinestatic

Returns the momentum flux for a boundary with a slip condition.

Parameters

problem	The problem
fvGeometry	The finite-volume geometry
scvf	The sub control volume face
elemVolVars	The volume variables for the element
elemFluxVarsCache	The flux variables cache for the element
tangentialVelocityGradient	A user-specified velocity gradient in tangential direction of the boundary. Only used for certain situations where this gradient cannot be determined automatically (e.g., at lateral Neumann boundaries).

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

• fluxhelper.hh