Kratos::FixedMeshALEUtilities Class Reference

Utility to perform the FM-ALE algorithm operations This utility implements the Fixed Mesh - Arbitrary Lagrangian Eulerian (FM-ALE) algorithm operations. After setting a virtual mesh, which is a copy of the problem background element mesh, it is moved in accordante to the immersed object movement. The virtual mesh movement is solved using a common ALE mesh solver (in this case the Laplacian mesh solver is used). Once the mesh movement, including the mesh velocity, have been computed, the origin mesh historical values (velocity and pressure), as well as the mesh velocity, are computed as a projection from the virtual mesh. This is required to consistently initialize the historical values when nodes change its topological status. More...

#include <fixed_mesh_ale_utilities.h>

Collaboration diagram for Kratos::FixedMeshALEUtilities:

Public Member Functions
Life Cycle
	FixedMeshALEUtilities (Model &rModel, Parameters &rParameters)
	Constructor with model and parameters. More...
virtual	~FixedMeshALEUtilities ()=default
	Destructor. More...
Operations
virtual void	Initialize (ModelPart &rOriginModelPart)
	Initializes the FM-ALE utility This method fills the virtual model part as a copy of the origin model part. In case it is used, it also creates and initializes the mesh moving strategy. More...
virtual void	SetVirtualMeshValuesFromOriginMesh ()
	Set the Virtual Mesh Values From Origin Mesh object This method sets the VELOCITY and PRESSURE historical values in the virtual mesh. The values are retrieved from the origin mesh. This needs to be called in the InitializeSolutionStep of the solver. Note that if sub-iteration is done (e.g. FSI) this must be called before and just once. More...
virtual void	ComputeMeshMovement (const double DeltaTime)
	Compute the virtual mesh movement This method computes the virtual mesh movement in accordance to the immersed structure DISPLACEMENT values. To that purpose it sets the fixity and creates & solves the mesh moving strategy. More...
virtual void	UndoMeshMovement ()
	Revert the virtual mesh movement This method reverts the virtual mesh movement to recover its original configuration, which coincides with the background mesh one. It has to be called once the values projection from the virtual mesh to the origin has been performed. More...
template<unsigned int TDim>
void	ProjectVirtualValues (ModelPart &rOriginModelPart, const unsigned int BufferSize=3)
	This method projects the virtual model part mesh values to the origin mesh Once the FM-ALE operations have been performed, this method projects the nodal values from the virtual mesh to the origin mesh. The projected variables are PRESSURE, VELOCITY and MESH_VELOCITY. More...
Input and output
std::string	Info () const
	Turn back information as a string. More...
void	PrintInfo (std::ostream &rOStream) const
	Print information about this object. More...
void	PrintData (std::ostream &rOStream) const
	Print object's data. More...

Type Definitions
typedef Element::NodesArrayType	NodesArrayType
typedef UblasSpace< double, Matrix, Vector >	LocalSpaceType
typedef UblasSpace< double, CompressedMatrix, Vector >	SparseSpaceType
typedef LinearSolver< SparseSpaceType, LocalSpaceType >	LinearSolverType
typedef LinearSolverFactory< SparseSpaceType, LocalSpaceType >	LinearSolverFactoryType
typedef ResidualBasedIncrementalUpdateStaticScheme< SparseSpaceType, LocalSpaceType >	SchemeType
typedef ResidualBasedLinearStrategy< SparseSpaceType, LocalSpaceType, LinearSolverType >	StrategyType
typedef ResidualBasedBlockBuilderAndSolver< SparseSpaceType, LocalSpaceType, LinearSolverType >	BuilderAndSolverType
typedef CalculateEmbeddedNodalVariableFromSkinProcess< array_1d< double, 3 >, SparseSpaceType, LocalSpaceType, LinearSolverType >	EmbeddedNodalVariableProcessArrayType
typedef SchemeType::Pointer	SchemePointerType
typedef StrategyType::Pointer	StrategyPointerType
typedef BuilderAndSolverType::Pointer	BuilderAndSolverPointerType
	KRATOS_CLASS_POINTER_DEFINITION (FixedMeshALEUtilities)
	Pointer definition of FixedMeshALEUtilities. More...

Detailed Description

Utility to perform the FM-ALE algorithm operations This utility implements the Fixed Mesh - Arbitrary Lagrangian Eulerian (FM-ALE) algorithm operations. After setting a virtual mesh, which is a copy of the problem background element mesh, it is moved in accordante to the immersed object movement. The virtual mesh movement is solved using a common ALE mesh solver (in this case the Laplacian mesh solver is used). Once the mesh movement, including the mesh velocity, have been computed, the origin mesh historical values (velocity and pressure), as well as the mesh velocity, are computed as a projection from the virtual mesh. This is required to consistently initialize the historical values when nodes change its topological status.

Member Typedef Documentation

BuilderAndSolverPointerType

typedef BuilderAndSolverType::Pointer Kratos::FixedMeshALEUtilities::BuilderAndSolverPointerType

BuilderAndSolverType

typedef ResidualBasedBlockBuilderAndSolver<SparseSpaceType, LocalSpaceType, LinearSolverType> Kratos::FixedMeshALEUtilities::BuilderAndSolverType

EmbeddedNodalVariableProcessArrayType

typedef CalculateEmbeddedNodalVariableFromSkinProcess<array_1d<double, 3>, SparseSpaceType, LocalSpaceType, LinearSolverType> Kratos::FixedMeshALEUtilities::EmbeddedNodalVariableProcessArrayType

LinearSolverFactoryType

typedef LinearSolverFactory<SparseSpaceType, LocalSpaceType> Kratos::FixedMeshALEUtilities::LinearSolverFactoryType

LinearSolverType

typedef LinearSolver<SparseSpaceType, LocalSpaceType> Kratos::FixedMeshALEUtilities::LinearSolverType

LocalSpaceType

typedef UblasSpace<double, Matrix, Vector> Kratos::FixedMeshALEUtilities::LocalSpaceType

NodesArrayType

typedef Element::NodesArrayType Kratos::FixedMeshALEUtilities::NodesArrayType

SchemePointerType

typedef SchemeType::Pointer Kratos::FixedMeshALEUtilities::SchemePointerType

SchemeType

typedef ResidualBasedIncrementalUpdateStaticScheme<SparseSpaceType, LocalSpaceType> Kratos::FixedMeshALEUtilities::SchemeType

SparseSpaceType

typedef UblasSpace<double, CompressedMatrix, Vector> Kratos::FixedMeshALEUtilities::SparseSpaceType

StrategyPointerType

typedef StrategyType::Pointer Kratos::FixedMeshALEUtilities::StrategyPointerType

StrategyType

typedef ResidualBasedLinearStrategy<SparseSpaceType, LocalSpaceType, LinearSolverType> Kratos::FixedMeshALEUtilities::StrategyType

Constructor & Destructor Documentation

FixedMeshALEUtilities()

Kratos::FixedMeshALEUtilities::FixedMeshALEUtilities	(	Model &	rModel,
		Parameters &	rParameters
	)

Constructor with model and parameters.

~FixedMeshALEUtilities()

virtual Kratos::FixedMeshALEUtilities::~FixedMeshALEUtilities ( )

virtualdefault

Destructor.

Member Function Documentation

ComputeMeshMovement()

void Kratos::FixedMeshALEUtilities::ComputeMeshMovement ( const double  DeltaTime )

virtual

Compute the virtual mesh movement This method computes the virtual mesh movement in accordance to the immersed structure DISPLACEMENT values. To that purpose it sets the fixity and creates & solves the mesh moving strategy.

Parameters

DeltaTime

time step value (required for the computation of the MESH_VELOCITY)

Info()

std::string Kratos::FixedMeshALEUtilities::Info

(

)

const

Turn back information as a string.

Initialize()

void Kratos::FixedMeshALEUtilities::Initialize ( ModelPart &  rOriginModelPart )

virtual

Initializes the FM-ALE utility This method fills the virtual model part as a copy of the origin model part. In case it is used, it also creates and initializes the mesh moving strategy.

Parameters

rOriginModelPart

model part from where the nodes and elements are copied

KRATOS_CLASS_POINTER_DEFINITION()

Kratos::FixedMeshALEUtilities::KRATOS_CLASS_POINTER_DEFINITION

(

FixedMeshALEUtilities

)

Pointer definition of FixedMeshALEUtilities.

PrintData()

void Kratos::FixedMeshALEUtilities::PrintData

(

std::ostream &

rOStream

)

const

Print object's data.

PrintInfo()

void Kratos::FixedMeshALEUtilities::PrintInfo

(

std::ostream &

rOStream

)

const

Print information about this object.

ProjectVirtualValues()

template<unsigned int TDim>

template void Kratos::FixedMeshALEUtilities::ProjectVirtualValues< 3 >	(	ModelPart &	rOriginModelPart,
		const unsigned int	BufferSize = 3
	)

This method projects the virtual model part mesh values to the origin mesh Once the FM-ALE operations have been performed, this method projects the nodal values from the virtual mesh to the origin mesh. The projected variables are PRESSURE, VELOCITY and MESH_VELOCITY.

Template Parameters

TDim	Template parameter containing the problem domain size

Parameters

rOriginModelPart	Reference to the model part to which the values are projected
BufferSize	Buffer values that are projected

SetVirtualMeshValuesFromOriginMesh()

void Kratos::FixedMeshALEUtilities::SetVirtualMeshValuesFromOriginMesh ( )

virtual

Set the Virtual Mesh Values From Origin Mesh object This method sets the VELOCITY and PRESSURE historical values in the virtual mesh. The values are retrieved from the origin mesh. This needs to be called in the InitializeSolutionStep of the solver. Note that if sub-iteration is done (e.g. FSI) this must be called before and just once.

UndoMeshMovement()

void Kratos::FixedMeshALEUtilities::UndoMeshMovement ( )

virtual

Revert the virtual mesh movement This method reverts the virtual mesh movement to recover its original configuration, which coincides with the background mesh one. It has to be called once the values projection from the virtual mesh to the origin has been performed.

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

• /home/runner/work/Documentation/Documentation/master/applications/MeshMovingApplication/custom_utilities/fixed_mesh_ale_utilities.h
• /home/runner/work/Documentation/Documentation/master/applications/MeshMovingApplication/custom_utilities/fixed_mesh_ale_utilities.cpp