petsc-3.14.6 2021-03-30
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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

Note: The calling sequence for solution functions is given by

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

PetscDSGetExactSolutionTimeDerivative(), PetscDSSetExactSolution()

Level

intermediate

Location

src/dm/dt/interface/dtds.c
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages