Low-Re k-epsilon turbulence problem base class. More...

#include <dumux/freeflow/rans/twoeq/lowrekepsilon/problem.hh>

Inheritance diagram for Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >:

Description

template<class TypeTag>
class Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >

Low-Re k-epsilon turbulence problem base class.

This implements some base functionality for low-Re k-epsilon models.

Public Member Functions
	RANSProblemImpl (std::shared_ptr< const GridGeometry > gridGeometry, const std::string &paramGroup="")
	The constructor sets the gravity, if desired by the user. More...

void	updateStaticWallProperties ()
	Correct size of the static (solution independent) wall variables. More...

void	updateDynamicWallProperties (const SolutionVector &curSol)
	Update the dynamic (solution dependent) relations to the walls. More...

bool	useWallFunction (const Element &element, const SubControlVolumeFace &scvf, const int &eqIdx) const
	Returns whether a wall function should be used at a given face. More...

template<class ElementVolumeVariables , class ElementFaceVariables >
FacePrimaryVariables	wallFunction (const Element &element, const FVElementGeometry &fvGeometry, const ElementVolumeVariables &elemVolVars, const ElementFaceVariables &elemFaceVars, const SubControlVolumeFace &scvf, const SubControlVolumeFace &lateralBoundaryFace) const
	Returns an additional wall function momentum flux. More...

template<class ElementVolumeVariables , class ElementFaceVariables >
CellCenterPrimaryVariables	wallFunction (const Element &element, const FVElementGeometry &fvGeometry, const ElementVolumeVariables &elemVolVars, const ElementFaceVariables &elemFaceVars, const SubControlVolumeFace &scvf) const
	Returns an additional wall function flux for cell-centered quantities. More...

bool	isOnWall (const SubControlVolumeFace &scvf) const
	Returns whether a given sub control volume face is on a wall. More...

bool	isOnWallAtPos (const GlobalPosition &globalPos) const
	Returns whether a given point is on a wall. More...

Scalar	sandGrainRoughnessAtPos (const GlobalPosition &globalPos) const
	Returns the sand-grain roughness \(\mathrm{[m]}\) at a given position. More...

const Scalar	karmanConstant () const
	Returns the Karman constant. More...

const Scalar	betaOmega () const
	Returns the \( \beta_{\omega} \) constant. More...

Scalar	turbulentPrandtlNumber () const
	Return the turbulent Prandtl number \( [-] \) which is used to convert the eddy viscosity to an eddy thermal conductivity. More...

Scalar	turbulentSchmidtNumber () const
	Return the turbulent Schmidt number \( [-] \) which is used to convert the eddy viscosity to an eddy diffusivity. More...

Scalar	temperatureAtPos (const GlobalPosition &globalPos) const
	Returns the temperature \(\mathrm{[K]}\) at a given global position. More...

Scalar	temperature () const
	Returns the temperature within the domain. More...

const GravityVector &	gravity () const
	Returns the acceleration due to gravity. More...

bool	enableInertiaTerms () const
	Returns whether interia terms should be considered. More...

template<class SolutionVector , class G = GridGeometry>
std::enable_if< G::discMethod==DiscretizationMethod::staggered, void >::type	applyInitialFaceSolution (SolutionVector &sol, const SubControlVolumeFace &scvf, const PrimaryVariables &initSol) const
	Applys the initial face solution (velocities on the faces). Specialization for staggered grid discretization. More...

Scalar	pseudo3DWallFriction (const Scalar velocity, const Scalar viscosity, const Scalar height, const Scalar factor=8.0) const
	An additional drag term can be included as source term for the momentum balance to mimic 3D flow behavior in 2D: More...

template<class ElementVolumeVariables , class ElementFaceVariables , class G = GridGeometry>
std::enable_if< G::discMethod==DiscretizationMethod::staggered, Scalar >::type	pseudo3DWallFriction (const SubControlVolumeFace &scvf, const ElementVolumeVariables &elemVolVars, const ElementFaceVariables &elemFaceVars, const Scalar height, const Scalar factor=8.0) const
	Convenience function for staggered grid implementation. More...

Scalar	permeability (const Element &element, const SubControlVolumeFace &scvf) const
	Returns the intrinsic permeability of required as input parameter for the Beavers-Joseph-Saffman boundary condition. More...

Scalar	alphaBJ (const SubControlVolumeFace &scvf) const
	Returns the alpha value required as input parameter for the Beavers-Joseph-Saffman boundary condition. More...

Scalar	betaBJ (const Element &element, const SubControlVolumeFace &scvf) const
	Returns the beta value, or the alpha value divided by the square root of the intrinsic permeability. More...

Scalar	velocityPorousMedium (const Element &element, const SubControlVolumeFace &scvf) const
	Returns the velocity in the porous medium (which is 0 by default according to Saffmann). More...

VelocityVector	porousMediumVelocity (const Element &element, const SubControlVolumeFace &scvf) const
	Returns the velocity in the porous medium (which is 0 by default according to Saffmann). More...

const Scalar	beaversJosephVelocity (const Element &element, const SubControlVolume &scv, const SubControlVolumeFace &faceOnPorousBoundary, const Scalar velocitySelf, const Scalar tangentialVelocityGradient) const
	helper function to evaluate the slip velocity on the boundary when the Beavers-Joseph condition is used More...

const Scalar	beaversJosephVelocity (const Element &element, const SubControlVolume &scv, const SubControlVolumeFace &ownScvf, const SubControlVolumeFace &faceOnPorousBoundary, const Scalar velocitySelf, const Scalar tangentialVelocityGradient) const
	helper function to evaluate the slip velocity on the boundary when the Beavers-Joseph condition is used More...

Public Attributes
std::vector< Scalar >	storedDissipationTilde_

std::vector< Scalar >	storedDynamicEddyViscosity_

std::vector< Scalar >	storedTurbulentKineticEnergy_

bool	useStoredEddyViscosity_

bool	calledUpdateStaticWallProperties = false

std::vector< unsigned int >	wallElementIdx_

std::vector< Scalar >	wallDistance_

std::vector< std::array< std::array< unsigned int, 2 >, dim > >	neighborIdx_

std::vector< GlobalPosition >	cellCenter_

std::vector< DimVector >	velocity_

std::vector< DimVector >	velocityMaximum_

std::vector< DimVector >	velocityMinimum_

std::vector< DimMatrix >	velocityGradients_

std::vector< Scalar >	stressTensorScalarProduct_

std::vector< Scalar >	vorticityTensorScalarProduct_

std::vector< unsigned int >	wallNormalAxis_

std::vector< unsigned int >	flowNormalAxis_

std::vector< Scalar >	kinematicViscosity_

std::vector< Scalar >	sandGrainRoughness_

Constructor & Destructor Documentation

◆ RANSProblemImpl()

template<class TypeTag >

Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >::RANSProblemImpl	(	std::shared_ptr< const GridGeometry >	gridGeometry,
		const std::string &	paramGroup = `""`
	)

inline

The constructor sets the gravity, if desired by the user.

Member Function Documentation

◆ alphaBJ()

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::alphaBJ ( const SubControlVolumeFace & scvf ) const

inlineinherited

Returns the alpha value required as input parameter for the Beavers-Joseph-Saffman boundary condition.

This member function must be overloaded in the problem implementation, if the BJS boundary condition is used.

◆ applyInitialFaceSolution()

template<class TypeTag >

template<class SolutionVector , class G = GridGeometry>

std::enable_if< G::discMethod==DiscretizationMethod::staggered, void >::type Dumux::NavierStokesProblem< TypeTag >::applyInitialFaceSolution	(	SolutionVector &	sol,
		const SubControlVolumeFace &	scvf,
		const PrimaryVariables &	initSol
	)		const

inlineinherited

Applys the initial face solution (velocities on the faces). Specialization for staggered grid discretization.

◆ beaversJosephVelocity() [1/2]

template<class TypeTag >

const Scalar Dumux::NavierStokesProblem< TypeTag >::beaversJosephVelocity	(	const Element &	element,
		const SubControlVolume &	scv,
		const SubControlVolumeFace &	faceOnPorousBoundary,
		const Scalar	velocitySelf,
		const Scalar	tangentialVelocityGradient
	)		const

inlineinherited

helper function to evaluate the slip velocity on the boundary when the Beavers-Joseph condition is used

◆ beaversJosephVelocity() [2/2]

template<class TypeTag >

const Scalar Dumux::NavierStokesProblem< TypeTag >::beaversJosephVelocity	(	const Element &	element,
		const SubControlVolume &	scv,
		const SubControlVolumeFace &	ownScvf,
		const SubControlVolumeFace &	faceOnPorousBoundary,
		const Scalar	velocitySelf,
		const Scalar	tangentialVelocityGradient
	)		const

inlineinherited

helper function to evaluate the slip velocity on the boundary when the Beavers-Joseph condition is used

◆ betaBJ()

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::betaBJ	(	const Element &	element,
		const SubControlVolumeFace &	scvf
	)		const

inlineinherited

Returns the beta value, or the alpha value divided by the square root of the intrinsic permeability.

◆ betaOmega()

template<class TypeTag >

const Scalar Dumux::RANSProblemBase< TypeTag >::betaOmega ( ) const

inlineinherited

Returns the \( \beta_{\omega} \) constant.

◆ enableInertiaTerms()

template<class TypeTag >

bool Dumux::NavierStokesProblem< TypeTag >::enableInertiaTerms ( ) const

inlineinherited

Returns whether interia terms should be considered.

◆ gravity()

template<class TypeTag >

const GravityVector & Dumux::NavierStokesProblem< TypeTag >::gravity ( ) const

inlineinherited

Returns the acceleration due to gravity.

If the Problem.EnableGravity parameter is true, this means \(\boldsymbol{g} = ( 0,\dots,\ -9.81)^T \), else \(\boldsymbol{g} = ( 0,\dots, 0)^T \)

◆ isOnWall()

template<class TypeTag >

bool Dumux::RANSProblemBase< TypeTag >::isOnWall ( const SubControlVolumeFace & scvf ) const

inlineinherited

Returns whether a given sub control volume face is on a wall.

Parameters

scvf	The sub control volume face.

◆ isOnWallAtPos()

template<class TypeTag >

bool Dumux::RANSProblemBase< TypeTag >::isOnWallAtPos ( const GlobalPosition & globalPos ) const

inlineinherited

Returns whether a given point is on a wall.

Parameters

globalPos The position in global coordinates.

◆ karmanConstant()

template<class TypeTag >

const Scalar Dumux::RANSProblemBase< TypeTag >::karmanConstant ( ) const

inlineinherited

Returns the Karman constant.

◆ permeability()

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::permeability	(	const Element &	element,
		const SubControlVolumeFace &	scvf
	)		const

inlineinherited

Returns the intrinsic permeability of required as input parameter for the Beavers-Joseph-Saffman boundary condition.

This member function must be overloaded in the problem implementation, if the BJS boundary condition is used.

◆ porousMediumVelocity()

template<class TypeTag >

VelocityVector Dumux::NavierStokesProblem< TypeTag >::porousMediumVelocity	(	const Element &	element,
		const SubControlVolumeFace &	scvf
	)		const

inlineinherited

Returns the velocity in the porous medium (which is 0 by default according to Saffmann).

◆ pseudo3DWallFriction() [1/2]

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::pseudo3DWallFriction	(	const Scalar	velocity,
		const Scalar	viscosity,
		const Scalar	height,
		const Scalar	factor = `8.0`
	)		const

inlineinherited

An additional drag term can be included as source term for the momentum balance to mimic 3D flow behavior in 2D:

\[ f_{drag} = -(8 \mu / h^2)v \]

Here, \(h\) corresponds to the extruded height that is bounded by the imaginary walls. See Flekkoy et al. (1995) [22]
A value of 8.0 is used as a default factor, corresponding to the velocity profile at the center plane of the virtual height (maximum velocity). Setting this value to 12.0 corresponds to an depth-averaged velocity (Venturoli and Boek, 2006) [66].

◆ pseudo3DWallFriction() [2/2]

template<class TypeTag >

template<class ElementVolumeVariables , class ElementFaceVariables , class G = GridGeometry>

std::enable_if< G::discMethod==DiscretizationMethod::staggered, Scalar >::type Dumux::NavierStokesProblem< TypeTag >::pseudo3DWallFriction	(	const SubControlVolumeFace &	scvf,
		const ElementVolumeVariables &	elemVolVars,
		const ElementFaceVariables &	elemFaceVars,
		const Scalar	height,
		const Scalar	factor = `8.0`
	)		const

inlineinherited

Convenience function for staggered grid implementation.

◆ sandGrainRoughnessAtPos()

template<class TypeTag >

Scalar Dumux::RANSProblemBase< TypeTag >::sandGrainRoughnessAtPos ( const GlobalPosition & globalPos ) const

inlineinherited

Returns the sand-grain roughness \(\mathrm{[m]}\) at a given position.

Parameters

globalPos The position in global coordinates.

◆ temperature()

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::temperature ( ) const

inlineinherited

Returns the temperature within the domain.

This method MUST be overwritten by the actual problem.

◆ temperatureAtPos()

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::temperatureAtPos ( const GlobalPosition & globalPos ) const

inlineinherited

Returns the temperature \(\mathrm{[K]}\) at a given global position.

This is not specific to the discretization. By default it just calls temperature().

Parameters

globalPos The position in global coordinates where the temperature should be specified.

◆ turbulentPrandtlNumber()

template<class TypeTag >

Scalar Dumux::RANSProblemBase< TypeTag >::turbulentPrandtlNumber ( ) const

inlineinherited

Return the turbulent Prandtl number \( [-] \) which is used to convert the eddy viscosity to an eddy thermal conductivity.

◆ turbulentSchmidtNumber()

template<class TypeTag >

Scalar Dumux::RANSProblemBase< TypeTag >::turbulentSchmidtNumber ( ) const

inlineinherited

Return the turbulent Schmidt number \( [-] \) which is used to convert the eddy viscosity to an eddy diffusivity.

◆ updateDynamicWallProperties()

template<class TypeTag >

void Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >::updateDynamicWallProperties ( const SolutionVector & curSol )

inline

Update the dynamic (solution dependent) relations to the walls.

Parameters

curSol The solution vector.

◆ updateStaticWallProperties()

template<class TypeTag >

void Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >::updateStaticWallProperties ( )

inline

Correct size of the static (solution independent) wall variables.

◆ useWallFunction()

template<class TypeTag >

bool Dumux::RANSProblemBase< TypeTag >::useWallFunction	(	const Element &	element,
		const SubControlVolumeFace &	scvf,
		const int &	eqIdx
	)		const

inlineinherited

Returns whether a wall function should be used at a given face.

Parameters

element	The element.
scvf	The sub control volume face.
eqIdx	The equation index.

◆ velocityPorousMedium()

template<class TypeTag >

Scalar Dumux::NavierStokesProblem< TypeTag >::velocityPorousMedium	(	const Element &	element,
		const SubControlVolumeFace &	scvf
	)		const

inlineinherited

Returns the velocity in the porous medium (which is 0 by default according to Saffmann).

◆ wallFunction() [1/2]

template<class TypeTag >

template<class ElementVolumeVariables , class ElementFaceVariables >

CellCenterPrimaryVariables Dumux::RANSProblemBase< TypeTag >::wallFunction	(	const Element &	element,
		const FVElementGeometry &	fvGeometry,
		const ElementVolumeVariables &	elemVolVars,
		const ElementFaceVariables &	elemFaceVars,
		const SubControlVolumeFace &	scvf
	)		const

inlineinherited

Returns an additional wall function flux for cell-centered quantities.

◆ wallFunction() [2/2]

template<class TypeTag >

template<class ElementVolumeVariables , class ElementFaceVariables >

FacePrimaryVariables Dumux::RANSProblemBase< TypeTag >::wallFunction	(	const Element &	element,
		const FVElementGeometry &	fvGeometry,
		const ElementVolumeVariables &	elemVolVars,
		const ElementFaceVariables &	elemFaceVars,
		const SubControlVolumeFace &	scvf,
		const SubControlVolumeFace &	lateralBoundaryFace
	)		const

std::vector<Scalar> Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >::storedDynamicEddyViscosity_

◆ storedTurbulentKineticEnergy_

template<class TypeTag >

std::vector<Scalar> Dumux::RANSProblemImpl< TypeTag, TurbulenceModel::lowrekepsilon >::storedTurbulentKineticEnergy_

◆ stressTensorScalarProduct_

template<class TypeTag >

std::vector<Scalar> Dumux::RANSProblemBase< TypeTag >::stressTensorScalarProduct_

inherited

template<class TypeTag >

std::vector<unsigned int> Dumux::RANSProblemBase< TypeTag >::wallNormalAxis_

inherited

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

freeflow/rans/twoeq/lowrekepsilon/problem.hh

Description

Public Member Functions

Public Attributes

Constructor & Destructor Documentation

◆ RANSProblemImpl()

Member Function Documentation

◆ alphaBJ()

◆ applyInitialFaceSolution()

◆ beaversJosephVelocity() [1/2]

◆ beaversJosephVelocity() [2/2]

◆ betaBJ()

◆ betaOmega()

◆ enableInertiaTerms()

◆ gravity()

◆ isOnWall()

◆ isOnWallAtPos()

◆ karmanConstant()

◆ permeability()

◆ porousMediumVelocity()

◆ pseudo3DWallFriction() [1/2]

◆ pseudo3DWallFriction() [2/2]

◆ sandGrainRoughnessAtPos()

◆ temperature()

◆ temperatureAtPos()

◆ turbulentPrandtlNumber()

◆ turbulentSchmidtNumber()

◆ updateDynamicWallProperties()

◆ updateStaticWallProperties()

◆ useWallFunction()

◆ velocityPorousMedium()

◆ wallFunction() [1/2]

◆ wallFunction() [2/2]

Member Data Documentation

◆ calledUpdateStaticWallProperties

◆ cellCenter_

◆ flowNormalAxis_

◆ kinematicViscosity_

◆ neighborIdx_

◆ sandGrainRoughness_

◆ storedDissipationTilde_

◆ storedDynamicEddyViscosity_

◆ storedTurbulentKineticEnergy_

◆ stressTensorScalarProduct_

◆ useStoredEddyViscosity_

◆ velocity_

◆ velocityGradients_

◆ velocityMaximum_

◆ velocityMinimum_

◆ vorticityTensorScalarProduct_

◆ wallDistance_

◆ wallElementIdx_

◆ wallNormalAxis_