TSDISCGRAD#
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#
#include <petscts.h>
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 TSDiscGradGetFormulation(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);
See Also#
TS: Scalable ODE and DAE Solvers, TS, TSDiscGradSetFormulation(), TSDiscGradGetFormulation()`
Level#
beginner
Location#
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages