TSPseudoIncrementDtFromInitialDt — PETSc 3.23.0 documentation

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# TSPseudoIncrementDtFromInitialDt

Indicates that a new timestep is computed via the formula \( dt = initial_dt*initial_fnorm/current_fnorm rather than the default update, \) dt = current_dt*previous_fnorm/current_fnorm.

## Synopsis

    #include "petscts.h"
    PetscErrorCode TSPseudoIncrementDtFromInitialDt(TS ts)

Logically Collective

## Input Parameter

- ts - the timestep context

## Options Database Key

- -ts_pseudo_increment_dt_from_initial_dt <true,false> - use the initial dt to determine increment

## See Also

TS: Scalable ODE and DAE Solvers, `TSPSEUDO`, `TSPseudoSetTimeStep()`, `TSPseudoTimeStepDefault()`

## Level

advanced

## Location

src/ts/impls/pseudo/posindep.c

## Implementations

TSPseudoIncrementDtFromInitialDt_Pseudo() in src/ts/impls/pseudo/posindep.c

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Index of all manual pages