Struct containing flux helper functions to be used in the momentum problem's Neumann function.
#include <dumux/freeflow/navierstokes/momentum/fluxhelper.hh>
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| 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...
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| 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...
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◆ fixedPressureMomentumFlux()
template<class Problem , class FVElementGeometry , class ElementVolumeVariables , class ElementFluxVariablesCache , class Scalar >
| static auto Dumux::NavierStokesMomentumBoundaryFluxHelper::fixedPressureMomentumFlux |
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const Problem & |
problem, |
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const FVElementGeometry & |
fvGeometry, |
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const typename FVElementGeometry::SubControlVolumeFace & |
scvf, |
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const ElementVolumeVariables & |
elemVolVars, |
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const ElementFluxVariablesCache & |
elemFluxVarsCache, |
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const Scalar |
pressure, |
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const bool |
zeroNormalVelocityGradient = true |
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inlinestatic |
- Parameters
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| 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 |
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const Problem & |
problem, |
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const FVElementGeometry & |
fvGeometry, |
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const typename FVElementGeometry::SubControlVolumeFace & |
scvf, |
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const ElementVolumeVariables & |
elemVolVars, |
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const ElementFluxVariablesCache & |
elemFluxVarsCache, |
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const TangentialVelocityGradient & |
tangentialVelocityGradient = TangentialVelocityGradient(0.0) |
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) |
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inlinestatic |
- Parameters
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| 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). |
The documentation for this struct was generated from the following file:
1.9.3