petsc-3.11.4 2019-09-28

TSAlpha2GetParams

gets the algorithmic parameters for TSALPHA2

Synopsis

#include "petscts.h"   
PetscErrorCode TSAlpha2GetParams(TS ts,PetscReal *alpha_m,PetscReal *alpha_f,PetscReal *gamma,PetscReal *beta)

Not Collective

Input Parameter

ts - timestepping context

Output Parameters

	\alpha_m	- algorithmic parameter
	\alpha_f	- algorithmic parameter
	\gamma	- algorithmic parameter
	\beta	- algorithmic parameter

Note

Use of this function is normally only required to hack TSALPHA2 to use a modified integration scheme. Users should call TSAlpha2SetRadius() to set the high-frequency damping (i.e. spectral radius of the method) in order so select optimal values for these parameters.

Level

advanced

Location

src/ts/impls/implicit/alpha/alpha2.c

Implementations

TSAlpha2GetParams_Alpha in src/ts/impls/implicit/alpha/alpha2.c

Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages