Public Member Functions | Protected Member Functions | List of all members
ODESystem Class Referenceabstract

Abstract base class for the systems of ordinary differential equations. More...

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Public Member Functions

 ODESystem ()
 Construct null. More...
 
virtual ~ODESystem ()
 Destructor. More...
 
virtual label nEqns () const =0
 Return the number of equations in the system. More...
 
virtual void derivatives (const scalar x, const scalarField &y, const label li, scalarField &dydx) const =0
 Calculate the derivatives in dydx. More...
 
virtual void jacobian (const scalar x, const scalarField &y, const label li, scalarField &dfdx, scalarSquareMatrix &dfdy) const =0
 Calculate the Jacobian of the system. More...
 

Protected Member Functions

void check (const scalar x, const scalarField &y, const scalarField &dy, const label li) const
 Print correspondence between derivatives and Jacobian methods. More...
 

Detailed Description

Abstract base class for the systems of ordinary differential equations.

Definition at line 46 of file ODESystem.H.

Constructor & Destructor Documentation

◆ ODESystem()

ODESystem ( )

Construct null.

Definition at line 30 of file ODESystem.C.

◆ ~ODESystem()

~ODESystem ( )
virtual

Destructor.

Definition at line 36 of file ODESystem.C.

Member Function Documentation

◆ check()

void check ( const scalar  x,
const scalarField &  y,
const scalarField &  dy,
const label  li 
) const
protected

Print correspondence between derivatives and Jacobian methods.

Definition at line 42 of file ODESystem.C.

References A, forAll, Foam::Info, Foam::nl, Foam::stabilise(), x, y, Foam::y0(), and Foam::y1().

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◆ nEqns()

virtual label nEqns ( ) const
pure virtual

Return the number of equations in the system.

Implemented in odeChemistryModel.

◆ derivatives()

virtual void derivatives ( const scalar  x,
const scalarField &  y,
const label  li,
scalarField &  dydx 
) const
pure virtual

Calculate the derivatives in dydx.

for the current state x and y and optional index into the list of systems to solve li

Implemented in chemistryModel< ThermoType >.

Referenced by adaptiveSolver::solve().

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◆ jacobian()

virtual void jacobian ( const scalar  x,
const scalarField &  y,
const label  li,
scalarField &  dfdx,
scalarSquareMatrix &  dfdy 
) const
pure virtual

Calculate the Jacobian of the system.

for the current state x and y and optional index into the list of systems to solve li. Need by stiff-system solvers

Implemented in chemistryModel< ThermoType >.

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