ConvectionSystemSplit Class Reference

Composite system representing the Convection term for all components. More...

#include <convectionSystem.h>

Inheritance diagram for ConvectionSystemSplit:

Public Member Functions
	ConvectionSystemSplit ()
void	setGrid (const OneDimGrid &grid)
	Copy the specified grid to this object.
void	setTolerances (const ConfigOptions &options)
	Set tolerances for the CVODE solvers.
void	setGas (CanteraGas &gas)
	Set the Cantera object used for property evaluations.
void	resize (const size_t nPoints, const size_t nSpec, dmatrix &state)
	Set the problem size and provide values for the current state variables.
void	setState (double tInitial)
	Set the state of the internal solvers from the state of the composite solver.
void	setLeftBC (const double Tleft, const dvec &Yleft)
	Set boundary conditions for temperature and mass fractions left of the domain when using BoundaryCondition::ControlVolume or BoundaryCondition::WallFlux.
void	set_rVzero (const double rVzero)
	Set the mass flux boundary value at j=0.
void	evaluate ()
	Evaluate time derivatives for each state variable and the normal mass flux at the current state.
void	setDensityDerivative (const dvec &drhodt)
	Set the time derivative of the density.
void	updateContinuityBoundaryCondition (const dvec &qdot, ContinuityBoundaryCondition::BC newBC)
void	setSplitConstants (const dmatrix &splitConst)
	Set the constants introduced by the splitting method.
void	resetSplitConstants ()
	Set the constants introduced by the splitting method to zero.
void	integrateToTime (const double tf)
	Integrate the the split convection equations to tf.
void	integrateSpeciesTerms (size_t k1, size_t k2)
	Integrate the species terms in the range [k1, k2)
void	unroll_y ()
	convert the solver's solution vectors to the full U, Y, and T.
int	getNumSteps ()
	Compute the total number of timesteps taken by the solvers for the individual components.
void	setupQuasi2D (std::shared_ptr< BilinearInterpolator > &vzInterp, std::shared_ptr< BilinearInterpolator > &vrInterp)
	Set the velocity field data used in the Quasi2D case.
Public Member Functions inherited from GridBased
	GridBased ()
virtual	~GridBased ()

Public Attributes
VecMap	U
	normalized tangential velocity (u*a/u_inf) [1/s]
VecMap	T
	temperature [K]
MatrixMap	Y
	species mass fractions, Y(k,j) [-]
dvec	Wmx
	Mixture molecular weight [kg/kmol].
dvec	V
	mass flux normal to the flame [kg/m^2*s]
dvec	dUdt
	Time derivative of U [1/s^2].
dvec	dTdt
	Time derivative of T [K/s].
dvec	dWdt
	Time derivative of Wmx [kg/kmol*s].
dmatrix	dYdt
	Time derivative of Y [1/s].
ConvectionSystemUTW	utwSystem
	System used to solve for U, T, and Wmx.
std::shared_ptr< vecInterpolator >	vInterp
	Interpolation data for V, used for the species solvers.
PerfTimer	utwTimer
PerfTimer	speciesTimer
Public Attributes inherited from GridBased
OneDimGrid	grid
	the actual grid

Private Member Functions
void	configureSolver (SundialsCvode &solver, const size_t k)

Private Attributes
double	reltol
	CVODE integration tolerances.
double	abstolU
	velocity absolute tolerance
double	abstolT
	temperature absolute tolerance
double	abstolW
	molecular weight absolute tolerance
double	abstolY
	mass fraction absolute tolerance
std::shared_ptr< SundialsCvode >	utwSolver
	Solver for utwSystem.
boost::ptr_vector< ConvectionSystemY >	speciesSystems
	Systems used to solve the convection term for each species.
boost::ptr_vector< SundialsCvode >	speciesSolvers
	Solvers for system in speciesSystems.
dvec	Yleft
	Mass fraction left of the domain.
dvec	W
	Molecular weight of each species [kg/kmol].
size_t	nSpec
	Number of species.
size_t	nVars
	Number of state variables in the UTW system (==3)
CanteraGas *	gas
	Cantera object used for computing Wmx.
bool	quasi2d
	true when solving the quasi-2d problem; false otherwise.
double	tStageStop
	end time of the current integration stage
SundialsContext	sunContext

Additional Inherited Members
Protected Attributes inherited from GridBased
dvec &	x
	The coordinates of the grid points [m].
dvec &	r
	"radius" at x[j].
dvec &	rphalf
	"radius" at x[j+1/2].
dvec &	hh
	Grid spacing between x[j] and x[j+1].
dvec &	dlj
	Average of left and right grid spacing.
dvec &	cfm
	Coefficient for y[j-1] in first centered difference.
dvec &	cf
	Coefficient for y[j] in first centered difference.
dvec &	cfp
	Coefficient for y[j+1] in first centered difference.
int &	alpha
	curved grid exponent.
int &	beta
	curved grid exponent.
size_t &	nPoints
	number of grid point
size_t &	jj
	index of last grid point (== nPoints-1)

Detailed Description

Composite system representing the Convection term for all components.

System which combines a ConvectionSystemUTW object and several ConvectionSystemY objects that together represent the complete convection term for all components.

Constructor & Destructor Documentation

ConvectionSystemSplit()

ConvectionSystemSplit::ConvectionSystemSplit

(

)

Member Function Documentation

setGrid()

void ConvectionSystemSplit::setGrid ( const OneDimGrid & grid )

virtual

Copy the specified grid to this object.

Reimplemented from GridBased.

setTolerances()

void ConvectionSystemSplit::setTolerances

(

const ConfigOptions &

options

)

Set tolerances for the CVODE solvers.

setGas()

void ConvectionSystemSplit::setGas

(

CanteraGas &

gas

)

Set the Cantera object used for property evaluations.

resize()

void ConvectionSystemSplit::resize	(	const size_t	nPoints,
		const size_t	nSpec,
		dmatrix &	state )

Set the problem size and provide values for the current state variables.

setState()

void ConvectionSystemSplit::setState

(

double

tInitial

)

Set the state of the internal solvers from the state of the composite solver.

setLeftBC()

void ConvectionSystemSplit::setLeftBC	(	const double	Tleft,
		const dvec &	Yleft )

Set boundary conditions for temperature and mass fractions left of the domain when using BoundaryCondition::ControlVolume or BoundaryCondition::WallFlux.

set_rVzero()

void ConvectionSystemSplit::set_rVzero

(

const double

rVzero

)

Set the mass flux boundary value at j=0.

evaluate()

void ConvectionSystemSplit::evaluate

(

)

Evaluate time derivatives for each state variable and the normal mass flux at the current state.

setDensityDerivative()

void ConvectionSystemSplit::setDensityDerivative

(

const dvec &

drhodt

)

Set the time derivative of the density.

Time derivatives of species and temperature from the other split terms are needed to correctly compute the density derivative appearing in the continuity equation.

updateContinuityBoundaryCondition()

void ConvectionSystemSplit::updateContinuityBoundaryCondition	(	const dvec &	qdot,
		ContinuityBoundaryCondition::BC	newBC )

See also

ConvectionSystemUTW::updateContinuityBoundaryCondition

setSplitConstants()

void ConvectionSystemSplit::setSplitConstants

(

const dmatrix &

splitConst

)

Set the constants introduced by the splitting method.

resetSplitConstants()

void ConvectionSystemSplit::resetSplitConstants

(

)

Set the constants introduced by the splitting method to zero.

integrateToTime()

void ConvectionSystemSplit::integrateToTime

(

const double

tf

)

Integrate the the split convection equations to tf.

integrateSpeciesTerms()

void ConvectionSystemSplit::integrateSpeciesTerms	(	size_t	k1,
		size_t	k2 )

Integrate the species terms in the range [k1, k2)

unroll_y()

void ConvectionSystemSplit::unroll_y

(

)

convert the solver's solution vectors to the full U, Y, and T.

getNumSteps()

int ConvectionSystemSplit::getNumSteps

(

)

Compute the total number of timesteps taken by the solvers for the individual components.

setupQuasi2D()

void ConvectionSystemSplit::setupQuasi2D	(	std::shared_ptr< BilinearInterpolator > &	vzInterp,
		std::shared_ptr< BilinearInterpolator > &	vrInterp )

Set the velocity field data used in the Quasi2D case.

configureSolver()

void ConvectionSystemSplit::configureSolver ( SundialsCvode & solver, const size_t k )

private

Member Data Documentation

U

VecMap ConvectionSystemSplit::U

normalized tangential velocity (u*a/u_inf) [1/s]

T

VecMap ConvectionSystemSplit::T

temperature [K]

Y

MatrixMap ConvectionSystemSplit::Y

species mass fractions, Y(k,j) [-]

Wmx

dvec ConvectionSystemSplit::Wmx

Mixture molecular weight [kg/kmol].

V

dvec ConvectionSystemSplit::V

mass flux normal to the flame [kg/m^2*s]

dUdt

dvec ConvectionSystemSplit::dUdt

Time derivative of U [1/s^2].

dTdt

dvec ConvectionSystemSplit::dTdt

Time derivative of T [K/s].

dWdt

dvec ConvectionSystemSplit::dWdt

Time derivative of Wmx [kg/kmol*s].

dYdt

dmatrix ConvectionSystemSplit::dYdt

Time derivative of Y [1/s].

utwSystem

ConvectionSystemUTW ConvectionSystemSplit::utwSystem

System used to solve for U, T, and Wmx.

vInterp

std::shared_ptr<vecInterpolator> ConvectionSystemSplit::vInterp

Interpolation data for V, used for the species solvers.

utwTimer

PerfTimer ConvectionSystemSplit::utwTimer

speciesTimer

PerfTimer ConvectionSystemSplit::speciesTimer

reltol

double ConvectionSystemSplit::reltol

private

CVODE integration tolerances.

relative integrator tolerance

abstolU

double ConvectionSystemSplit::abstolU

private

velocity absolute tolerance

abstolT

double ConvectionSystemSplit::abstolT

private

temperature absolute tolerance

abstolW

double ConvectionSystemSplit::abstolW

private

molecular weight absolute tolerance

abstolY

double ConvectionSystemSplit::abstolY

private

mass fraction absolute tolerance

utwSolver

std::shared_ptr<SundialsCvode> ConvectionSystemSplit::utwSolver

private

Solver for utwSystem.

speciesSystems

boost::ptr_vector<ConvectionSystemY> ConvectionSystemSplit::speciesSystems

private

Systems used to solve the convection term for each species.

speciesSolvers

boost::ptr_vector<SundialsCvode> ConvectionSystemSplit::speciesSolvers

private

Solvers for system in speciesSystems.

Yleft

dvec ConvectionSystemSplit::Yleft

private

Mass fraction left of the domain.

Used with BoundaryCondition::ControlVolume and BoundaryCondition::WallFlux.

W

dvec ConvectionSystemSplit::W

private

Molecular weight of each species [kg/kmol].

nSpec

size_t ConvectionSystemSplit::nSpec

private

Number of species.

nVars

size_t ConvectionSystemSplit::nVars

private

Number of state variables in the UTW system (==3)

gas

CanteraGas* ConvectionSystemSplit::gas

private

Cantera object used for computing Wmx.

quasi2d

bool ConvectionSystemSplit::quasi2d

private

true when solving the quasi-2d problem; false otherwise.

tStageStop

double ConvectionSystemSplit::tStageStop

private

end time of the current integration stage

sunContext

SundialsContext ConvectionSystemSplit::sunContext

private

---

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

• src/convectionSystem.h
• src/convectionSystem.cpp