ResidEval Class Reference

Virtual base class for DAE residual function evaluators. More...

#include <ResidEval.h>

Inheritance diagram for ResidEval:

Public Member Functions
virtual void	constrain (const int k, const int flag)
	Constrain solution component k. More...
int	constraint (const int k) const
virtual void	initSizes ()
	Initialization function. More...
virtual void	setAlgebraic (const int k)
	Specify that solution component k is purely algebraic - that is, the derivative of this component does not appear in the residual function. More...
virtual bool	isAlgebraic (const int k)
virtual int	eval (const doublereal t, const doublereal *const y, const doublereal *const ydot, doublereal *const r)
	Evaluate the residual function. More...
virtual int	evalSS (const doublereal t, const doublereal *const y, doublereal *const r)
virtual int	evalSimpleTD (const doublereal t, const doublereal *const y, const doublereal *const yold, doublereal deltaT, doublereal *const r)
virtual int	getInitialConditions (const doublereal t0, doublereal *const y, doublereal *const ydot)
	Fill in the initial conditions. More...
virtual int	nEquations () const =0
	Return the number of equations in the equation system. More...
virtual void	writeSolution (int ievent, const double time, const double deltaT, const int time_step_num, const double *y, const double *ydot)
	Write out to a file or to standard output the current solution. More...
int	nparams () const
	Return the number of parameters in the calculation. More...

Protected Attributes
vector_int	m_alg
	Mapping vector that stores whether a degree of freedom is a DAE or not. More...
std::map< int, int >	m_constrain

Detailed Description

Virtual base class for DAE residual function evaluators.

Classes derived from ResidEval evaluate the residual function

\[ \vec{F}(t,\vec{y}, \vec{y^\prime}) \]

The DAE solver attempts to find a solution y(t) such that F = 0.

Definition at line 32 of file ResidEval.h.

Constructor & Destructor Documentation

ResidEval()

ResidEval ( )

inline

Definition at line 35 of file ResidEval.h.

~ResidEval()

virtual ~ResidEval ( )

inlinevirtual

Definition at line 36 of file ResidEval.h.

Member Function Documentation

constrain()

virtual void constrain ( const int  k, const int  flag  )

inlinevirtual

Constrain solution component k.

Possible values for 'flag' are:

• c_NONE no constraint
• c_GE_ZERO >= 0
• c_GT_ZERO > 0
• c_LE_ZERO <= 0
• c_LT_ZERO < 0

Definition at line 47 of file ResidEval.h.

constraint()

int constraint ( const int  k ) const

inline

Definition at line 50 of file ResidEval.h.

initSizes()

virtual void initSizes ( )

inlinevirtual

Initialization function.

Definition at line 55 of file ResidEval.h.

References ResidEval::m_alg, and ResidEval::nEquations().

Referenced by ResidEval::getInitialConditions(), and ResidEval::setAlgebraic().

setAlgebraic()

virtual void setAlgebraic ( const int  k )

inlinevirtual

Specify that solution component k is purely algebraic - that is, the derivative of this component does not appear in the residual function.

Definition at line 64 of file ResidEval.h.

References ResidEval::initSizes(), and ResidEval::m_alg.

isAlgebraic()

virtual bool isAlgebraic ( const int  k )

inlinevirtual

Definition at line 71 of file ResidEval.h.

eval()

virtual int eval ( const doublereal  t, const doublereal *const  y, const doublereal *const  ydot, doublereal *const  r  )

inlinevirtual

Evaluate the residual function.

Called by the integrator.

Parameters

t	time. (input)
y	solution vector. (input)
ydot	rate of change of solution vector. (input)
r	residual vector (output)

Reimplemented in ResidJacEval.

Definition at line 82 of file ResidEval.h.

evalSS()

virtual int evalSS ( const doublereal  t, const doublereal *const  y, doublereal *const  r  )

inlinevirtual

Definition at line 88 of file ResidEval.h.

evalSimpleTD()

virtual int evalSimpleTD ( const doublereal  t, const doublereal *const  y, const doublereal *const  yold, doublereal  deltaT, doublereal *const  r  )

inlinevirtual

Definition at line 93 of file ResidEval.h.

getInitialConditions()

virtual int getInitialConditions ( const doublereal  t0, doublereal *const  y, doublereal *const  ydot  )

inlinevirtual

Fill in the initial conditions.

Values for both the solution and the value of ydot may be provided.

Parameters

[in]	t0	Time
[out]	y	Solution vector
[out]	ydot	Rate of change of solution vector.

Returns

a flag to indicate that operation is successful. 1 Means a successful operation -0 or neg value Means an unsuccessful operation

Reimplemented in ResidJacEval.

Definition at line 116 of file ResidEval.h.

References ResidEval::initSizes().

nEquations()

virtual int nEquations ( ) const

pure virtual

Return the number of equations in the equation system.

Implemented in ResidJacEval.

Referenced by ResidEval::initSizes(), and ResidEval::writeSolution().

writeSolution()

virtual void writeSolution ( int  ievent, const double  time, const double  deltaT, const int  time_step_num, const double *  y, const double *  ydot  )

inlinevirtual

Write out to a file or to standard output the current solution.

ievent is a description of the event that caused this function to be called.

Definition at line 131 of file ResidEval.h.

References ResidEval::nEquations(), Cantera::writelog(), and Cantera::writelogf().

nparams()

int nparams ( ) const

inline

Return the number of parameters in the calculation.

This is the number of parameters in the sensitivity calculation. We have set this to zero and have included it for later expansion

Definition at line 156 of file ResidEval.h.

Member Data Documentation

m_alg

vector_int m_alg

protected

Mapping vector that stores whether a degree of freedom is a DAE or not.

The first index is the equation number. The second index is 1 if it is a DAE, and zero if it is not.

Definition at line 166 of file ResidEval.h.

Referenced by ResidEval::initSizes(), and ResidEval::setAlgebraic().

m_constrain

std::map<int, int> m_constrain

protected

Definition at line 167 of file ResidEval.h.

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

• ResidEval.h