PetscDSSetExactSolutionTimeDerivative

Set the pointwise time derivative of the exact solution function for a given test field

Synopsis

#include "petscds.h" 
PetscErrorCode PetscDSSetExactSolutionTimeDerivative(PetscDS prob, PetscInt f, PetscErrorCode (*sol)(PetscInt dim, PetscReal t, const PetscReal x[], PetscInt Nc, PetscScalar u[], void *ctx), void *ctx)

Not Collective

Input Parameters

• prob - The PetscDS

• f - The test field number

• sol - time derivative of the solution function for the test fields

• ctx - time derivative of the solution context or NULL

Calling sequence of sol

• dim - the spatial dimension

• t - current time

• x - coordinates of the current point

• Nc - the number of field components

• u - the solution field evaluated at the current point

• ctx - a user context

See Also

PetscDS, PetscDSGetExactSolutionTimeDerivative(), PetscDSSetExactSolution()

Level

intermediate

Location

src/dm/dt/interface/dtds.c

Examples

src/ts/tutorials/ex45.c
src/ts/tutorials/ex77.c
src/ts/tutorials/ex53.c
src/ts/tutorials/ex76.c

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