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#

  PetscErrorCode sol(PetscInt dim, PetscReal t, const PetscReal x[], PetscInt Nc, PetscScalar u[], void *ctx)

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

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