Class VCStaggeredStokesOperator is a concrete IBTK::LinearOperator which implements a staggered-grid (MAC) discretization of the incompressible Stokes operator with variable coefficients. More...

#include </home/runner/work/IBAMR/IBAMR/include/ibamr/VCStaggeredStokesOperator.h>

Inheritance diagram for IBAMR::VCStaggeredStokesOperator:

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Public Member Functions
	VCStaggeredStokesOperator (const std::string &object_name, bool homogeneous_bc=true, SAMRAI::tbox::Pointer< SAMRAI::tbox::Database > input_db=nullptr)
	Class constructor.

	~VCStaggeredStokesOperator ()
	Destructor.

Public Member Functions inherited from IBTK::LinearOperator
	LinearOperator (std::string object_name, bool homogeneous_bc=false)
	Constructor.

	~LinearOperator ()
	Empty destructor.

void	modifyRhsForBcs (SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &y) override
	Modify y to account for boundary conditions. More...

Public Member Functions inherited from IBTK::GeneralOperator
	GeneralOperator (std::string object_name, bool homogeneous_bc=false)
	Constructor.

virtual	~GeneralOperator ()
	Empty virtual destructor.

const std::string &	getName () const
	Return the object name.

virtual bool	getIsInitialized () const
	Return whether the operator is initialized.

virtual void	setHomogeneousBc (bool homogeneous_bc)
	Set whether the operator should use homogeneous boundary conditions.

virtual bool	getHomogeneousBc () const
	Return whether the operator is using homogeneous boundary conditions.

virtual void	setSolutionTime (double solution_time)
	Set the time at which the solution is to be evaluated.

virtual double	getSolutionTime () const
	Get the time at which the solution is being evaluated.

virtual void	setTimeInterval (double current_time, double new_time)
	Set the current time interval.

virtual std::pair< double, double >	getTimeInterval () const
	Get the current time interval.

virtual double	getDt () const
	Get the current time step size.

virtual void	setHierarchyMathOps (SAMRAI::tbox::Pointer< HierarchyMathOps > hier_math_ops)
	Set the HierarchyMathOps object used by the operator.

virtual SAMRAI::tbox::Pointer< HierarchyMathOps >	getHierarchyMathOps () const
	Get the HierarchyMathOps object used by the operator.

virtual void	applyAdd (SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &x, SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &y, SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &z)
	Compute . More...

virtual void	initializeOperatorState (const SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &in, const SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &out)
	Compute hierarchy dependent data required for computing y=F[x] and z=F[x]+y. More...

virtual void	deallocateOperatorState ()
	Remove all hierarchy dependent data allocated by initializeOperatorState(). More...

virtual void	imposeSolBcs (SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &u)
	Impose boudary conditions in the solution vector. More...

virtual void	setLoggingEnabled (bool enable_logging=true)
	Enable or disable logging.

virtual bool	getLoggingEnabled () const
	Determine whether logging is enabled or disabled.

virtual void	printClassData (std::ostream &stream)
	Print class data to stream.

Linear operator functionality.
void	apply (SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &x, SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &y) override
	Compute y=Ax. More...

void	setDPatchDataInterpolationType (IBTK::VCInterpType D_interp_type)
	Set the interpolation type to be used in computing the variable coefficient viscous Laplacian.

Additional Inherited Members
Protected Attributes inherited from IBTK::GeneralOperator
const std::string	d_object_name

bool	d_is_initialized = false

bool	d_homogeneous_bc

double	d_solution_time = std::numeric_limits<double>::quiet_NaN()

double	d_current_time = std::numeric_limits<double>::quiet_NaN()

double	d_new_time = std::numeric_limits<double>::quiet_NaN()

SAMRAI::tbox::Pointer< HierarchyMathOps >	d_hier_math_ops

bool	d_hier_math_ops_external = false

bool	d_enable_logging = false

Detailed Description

Class VCStaggeredStokesOperator is a concrete IBTK::LinearOperator which implements a staggered-grid (MAC) discretization of the incompressible Stokes operator with variable coefficients.

This class is intended to be used with an iterative (Krylov or Newton-Krylov) incompressible flow solver.

See also: INSVCStaggeredHierarchyIntegrator

Member Function Documentation

◆ apply()

void IBAMR::VCStaggeredStokesOperator::apply	(	SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &	x,
		SAMRAI::solv::SAMRAIVectorReal< NDIM, double > &	y
	)

overridevirtual

Compute y=Ax.

Before calling this function, the form of the vectors x and y should be set properly by the user on all patch interiors on the range of levels covered by the operator. All data in these vectors should be allocated. Thus, the user is responsible for managing the storage for the vectors.

Conditions on arguments:

vectors must have same hierarchy
vectors must have same variables (except that x must have enough ghost cells for computation of Ax).

Note: In general, the vectors x and y cannot be the same.

Upon return from this function, the y vector will contain the result of the application of A to x.

initializeOperatorState must be called prior to any calls to applyOperator.

See also: initializeOperatorState

Parameters

x	input
y	output: y=Ax

Implements IBTK::GeneralOperator.

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

/home/runner/work/IBAMR/IBAMR/include/ibamr/VCStaggeredStokesOperator.h
/home/runner/work/IBAMR/IBAMR/src/navier_stokes/VCStaggeredStokesOperator.cpp

Public Member Functions

Linear operator functionality.

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ apply()