petsc-3.12.5 2020-03-29

TSAdaptSetTimeStepIncreaseDelay

The number of timesteps to wait after a decrease in the timestep due to failed solver before increasing the time step.

Synopsis

#include "petscts.h" 
PetscErrorCode TSAdaptSetTimeStepIncreaseDelay(TSAdapt adapt,PetscInt cnt)

Logicially Collective on TSAdapt

Input Arguments

	adapt	- adaptive controller context
	cnt	- the number of timesteps

Options Database Key

-ts_adapt_time_step_increase_delay cnt -number of steps to delay the increase

Notes: This is to prevent an adaptor from bouncing back and forth between two nearby timesteps. The default is 0. The successful use of this option is problem dependent

Developer Note: there is no theory to support this option

Level

advanced

Location