PetscDSSetRHSResidual

Set the pointwise residual function for explicit timestepping for a given test field

Synopsis

#include "petscds.h" 
PetscErrorCode PetscDSSetRHSResidual(PetscDS ds, PetscInt f, PetscPointFn *f0, PetscPointFn *f1)

Not Collective

Input Parameters

• ds - The PetscDS

• f - The test field number

• f0 - integrand for the test function term, see PetscPointFn

• f1 - integrand for the test function gradient term, see PetscPointFn

Note

We are using a first order FEM model for the weak form: \( \int_\Omega \phi f_0(u, u_t, \nabla u, x, t) + \nabla\phi \cdot {\vec f}_1(u, u_t, \nabla u, x, t)\)

See Also

PetscDS, PetscDSGetResidual()

Level

intermediate

Location

src/dm/dt/interface/dtds.c

Examples

src/ts/tutorials/ex45.c

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