Evaluates the DAE residual written in implicit form F(t,U,Udot)=0
PetscErrorCode TSComputeIFunction(TS ts,PetscReal t,Vec U,Vec Udot,Vec Y,PetscBool imex)
Collective on TS and Vec
|ts ||- the TS context
|t ||- current time
|U ||- state vector
|Udot ||- time derivative of state vector
|imex ||- flag indicates if the method is IMEX so that the RHSFunction should be kept separate
Y -right hand side
Most users should not need to explicitly call this routine, as it
is used internally within the nonlinear solvers.
If the user did did not write their equations in implicit form, this
function recasts them in implicit form.
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages