CubbyFlow::GridBackwardEulerDiffusionSolver2 Class Reference

2-D grid-based backward Euler diffusion solver. More...

#include <Core/Solver/Grid/GridBackwardEulerDiffusionSolver2.h>

Inheritance diagram for CubbyFlow::GridBackwardEulerDiffusionSolver2:

Public Types
enum	BoundaryType { BoundaryType::Dirichlet, BoundaryType::Neumann }

Public Member Functions
	GridBackwardEulerDiffusionSolver2 (BoundaryType boundaryType=BoundaryType::Neumann)
	Constructs the solver with given boundary type. More...
void	Solve (const ScalarGrid2 &source, double diffusionCoefficient, double timeIntervalInSeconds, ScalarGrid2 *dest, const ScalarField2 &boundarySDF=ConstantScalarField2(std::numeric_limits< double >::max()), const ScalarField2 &fluidSDF=ConstantScalarField2(-std::numeric_limits< double >::max())) override
void	Solve (const CollocatedVectorGrid2 &source, double diffusionCoefficient, double timeIntervalInSeconds, CollocatedVectorGrid2 *dest, const ScalarField2 &boundarySDF=ConstantScalarField2(std::numeric_limits< double >::max()), const ScalarField2 &fluidSDF=ConstantScalarField2(-std::numeric_limits< double >::max())) override
void	Solve (const FaceCenteredGrid2 &source, double diffusionCoefficient, double timeIntervalInSeconds, FaceCenteredGrid2 *dest, const ScalarField2 &boundarySDF=ConstantScalarField2(std::numeric_limits< double >::max()), const ScalarField2 &fluidSDF=ConstantScalarField2(-std::numeric_limits< double >::max())) override
void	SetLinearSystemSolver (const FDMLinearSystemSolver2Ptr &solver)
	Sets the linear system solver for this diffusion solver. More...
Public Member Functions inherited from CubbyFlow::GridDiffusionSolver2
	GridDiffusionSolver2 ()
	Default constructor. More...
virtual	~GridDiffusionSolver2 ()
	Default destructor. More...

Detailed Description

2-D grid-based backward Euler diffusion solver.

This class implements 2-D grid-based forward Euler diffusion solver using second-order central differencing spatially. Since the method is following the implicit time-integration (i.e. backward Euler), larger time interval or diffusion coefficient can be used without breaking the result. Note, higher values for those parameters will still impact the accuracy of the result. To solve the backward Euler method, a linear system solver is used and incomplete Cholesky conjugate gradient method is used by default.

Member Enumeration Documentation

BoundaryType

enum CubbyFlow::GridBackwardEulerDiffusionSolver2::BoundaryType

strong

Enumerator
Dirichlet
Neumann

Constructor & Destructor Documentation

GridBackwardEulerDiffusionSolver2()

CubbyFlow::GridBackwardEulerDiffusionSolver2::GridBackwardEulerDiffusionSolver2 ( BoundaryType  boundaryType = BoundaryType::Neumann )

explicit

Constructs the solver with given boundary type.

Member Function Documentation

SetLinearSystemSolver()

void CubbyFlow::GridBackwardEulerDiffusionSolver2::SetLinearSystemSolver

(

const FDMLinearSystemSolver2Ptr &

solver

)

Sets the linear system solver for this diffusion solver.

Solve() [1/3]

void CubbyFlow::GridBackwardEulerDiffusionSolver2::Solve ( const ScalarGrid2 &  source, double  diffusionCoefficient, double  timeIntervalInSeconds, ScalarGrid2 *  dest, const ScalarField2 &  boundarySDF = ConstantScalarField2(std::numeric_limits< double >::max()), const ScalarField2 &  fluidSDF = ConstantScalarField2(-std::numeric_limits< double >::max())  )

overridevirtual

Solves diffusion equation for a scalar field.

Parameters

source	Input scalar field.
diffusionCoefficient	Amount of diffusion.
timeIntervalInSeconds	Small time-interval that diffusion occur.
dest	Output scalar field.
boundarySDF	Shape of the solid boundary that is empty by default.
fluidSDF	Shape of the fluid boundary that is full by default.

Implements CubbyFlow::GridDiffusionSolver2.

Solve() [2/3]

void CubbyFlow::GridBackwardEulerDiffusionSolver2::Solve ( const CollocatedVectorGrid2 &  source, double  diffusionCoefficient, double  timeIntervalInSeconds, CollocatedVectorGrid2 *  dest, const ScalarField2 &  boundarySDF = ConstantScalarField2(std::numeric_limits< double >::max()), const ScalarField2 &  fluidSDF = ConstantScalarField2(-std::numeric_limits< double >::max())  )

overridevirtual

Solves diffusion equation for a collocated vector field.

Parameters

source	Input collocated vector field.
diffusionCoefficient	Amount of diffusion.
timeIntervalInSeconds	Small time-interval that diffusion occur.
dest	Output collocated vector field.
boundarySDF	Shape of the solid boundary that is empty by default.
fluidSDF	Shape of the fluid boundary that is full by default.

Implements CubbyFlow::GridDiffusionSolver2.

Solve() [3/3]

void CubbyFlow::GridBackwardEulerDiffusionSolver2::Solve ( const FaceCenteredGrid2 &  source, double  diffusionCoefficient, double  timeIntervalInSeconds, FaceCenteredGrid2 *  dest, const ScalarField2 &  boundarySDF = ConstantScalarField2(std::numeric_limits< double >::max()), const ScalarField2 &  fluidSDF = ConstantScalarField2(-std::numeric_limits< double >::max())  )

overridevirtual

Solves diffusion equation for a face-centered vector field.

Parameters

source	Input face-centered vector field.
diffusionCoefficient	Amount of diffusion.
timeIntervalInSeconds	Small time-interval that diffusion occur.
dest	Output face-centered vector field.
boundarySDF	Shape of the solid boundary that is empty by default.
fluidSDF	Shape of the fluid boundary that is full by default.

Implements CubbyFlow::GridDiffusionSolver2.

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

• Core/Solver/Grid/GridBackwardEulerDiffusionSolver2.h