IBAMR::CFGiesekusStrategy Class Reference

Class CFGiesekusStrategy is a concrete CFStrategy that computes the relaxation function for the Giesekus fluid model. More...

#include <ibamr/CFGiesekusStrategy.h>

Inheritance diagram for IBAMR::CFGiesekusStrategy:

Public Member Functions
	CFGiesekusStrategy (std::string object_name, SAMRAI::tbox::Pointer< SAMRAI::tbox::Database > input_db)
	This constructor reads in the parameters for the model from the input database. More...
void	computeRelaxation (int R_idx, SAMRAI::tbox::Pointer< SAMRAI::pdat::CellVariable< NDIM, double > > R_var, int C_idx, SAMRAI::tbox::Pointer< SAMRAI::pdat::CellVariable< NDIM, double > > C_var, TensorEvolutionType evolve_type, SAMRAI::tbox::Pointer< SAMRAI::hier::PatchHierarchy< NDIM > > hierarchy, double data_time) override
	Compute the action of the relaxation operator, given the conformation tensor. More...
void	computeStress (int sig_idx, SAMRAI::tbox::Pointer< SAMRAI::pdat::CellVariable< NDIM, double > > sig_var, SAMRAI::tbox::Pointer< SAMRAI::hier::PatchHierarchy< NDIM > > hierarchy, double data_time) override
	Convert the conformation tensor to the stress tensor. More...

Private Attributes
double	d_alpha = std::numeric_limits<double>::quiet_NaN()
double	d_relaxation_time = std::numeric_limits<double>::quiet_NaN()
double	d_viscosity = std::numeric_limits<double>::quiet_NaN()
std::string	d_object_name

Detailed Description

The input database is searched for the following parameters:

• relaxation_time: Relaxation time of fluid
• alpha: Nonlinear parameter
• viscosity: Polymeric contribution to the viscosity

Constructor & Destructor Documentation

CFGiesekusStrategy()

IBAMR::CFGiesekusStrategy::CFGiesekusStrategy	(	std::string	object_name,
		SAMRAI::tbox::Pointer< SAMRAI::tbox::Database >	input_db
	)

Member Function Documentation

computeRelaxation()

void IBAMR::CFGiesekusStrategy::computeRelaxation ( int  R_idx, SAMRAI::tbox::Pointer< SAMRAI::pdat::CellVariable< NDIM, double > >  R_var, int  C_idx, SAMRAI::tbox::Pointer< SAMRAI::pdat::CellVariable< NDIM, double > >  C_var, TensorEvolutionType  evolve_type, SAMRAI::tbox::Pointer< SAMRAI::hier::PatchHierarchy< NDIM > >  hierarchy, double  data_time  )

overridevirtual

The parameter evolve_type determines the form of the tensor provided in C_idx. A helper function to convert from the data stored in C_idx to the conformation tensor is provided by convert_to_conformation_tensor.

The symmetric tensor in patch data index C_idx is stored using Voigt notation.

Implements IBAMR::CFStrategy.

computeStress()

void IBAMR::CFGiesekusStrategy::computeStress ( int  sig_idx, SAMRAI::tbox::Pointer< SAMRAI::pdat::CellVariable< NDIM, double > >  sig_var, SAMRAI::tbox::Pointer< SAMRAI::hier::PatchHierarchy< NDIM > >  hierarchy, double  data_time  )

overridevirtual

This conversion should be done in-place. The conformation tensor is provided in the patch index sig_idx with ghost cells filled. Implementations of this function MUST provide correct ghost cell information in sig_idx.

Implements IBAMR::CFStrategy.

Member Data Documentation

d_alpha

double IBAMR::CFGiesekusStrategy::d_alpha = std::numeric_limits<double>::quiet_NaN()

private

d_relaxation_time

double IBAMR::CFGiesekusStrategy::d_relaxation_time = std::numeric_limits<double>::quiet_NaN()

private

d_viscosity

double IBAMR::CFGiesekusStrategy::d_viscosity = std::numeric_limits<double>::quiet_NaN()

private

d_object_name

std::string IBAMR::CFStrategy::d_object_name

privateinherited

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

• include/ibamr/CFGiesekusStrategy.h