PETSc version 3.17.4
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TSDiscreteGradient

The Discrete Gradient integrator is a timestepper for hamiltonian systems designed to conserve the first integral (energy), but also has the property for some systems of monotonicity in a functional.

Synopsis

PETSC_EXTERN PetscErrorCode TSDiscGradSetFormulation(TS, PetscErrorCode(*)(TS, PetscReal, Vec, Mat, void *), PetscErrorCode(*)(TS, PetscReal, Vec, PetscScalar *, void *), PetscErrorCode(*)(TS, PetscReal, Vec, Vec, void *), void *);
PETSC_EXTERN PetscErrorCode TSDiscGradIsGonzalez(TS,PetscBool*);
PETSC_EXTERN PetscErrorCode TSDiscGradUseGonzalez(TS,PetscBool);

.seealso: TS, TSDISCGRAD, TSDiscGradSetFormulation(), TSDiscGradGetFormulation

Level

beginner

Location

src/ts/../../include/petscts.h
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages