petsc-3.4.4 2014-03-13

TSAlphaGetParams

gets the algorithmic parameters for TSALPHA

Synopsis

#include "petscts.h"   
PetscErrorCode  TSAlphaGetParams(TS ts,PetscReal *alpha_m,PetscReal *alpha_f,PetscReal *gamma)
Not Collective

Input Parameter

ts - timestepping context
\alpha_m - algorithmic parameter
\alpha_f - algorithmic parameter
\gamma - algorithmic parameter

Note

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

See Also

TSAlphaSetRadius(), TSAlphaSetParams()

Level:advanced
Location:
src/ts/impls/implicit/alpha/alpha.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages