TimeStepper System
The method used to calculate the size of the time steps is controlled by the TimeStepper block. There are a number of types of TimeStepper available, each of which controls the time stepping in different ways, including using fixed time stepping, time stepping based on a function, or adaptive time stepping.
Available Objects
- Moose App
- AB2PredictorCorrectorImplements second order Adams-Bashforth method for timestep calculation.
- CSVTimeSequenceStepperSolves the Transient problem at a sequence of given time points read in a file.
- ConstantDTTimestepper that takes a constant time step size
- DT2An adaptive timestepper that compares the solution obtained from a single step of size dt with two steps of size dt/2 and adjusts the next timestep accordingly.
- ExodusTimeSequenceStepperSolves the Transient problem at a sequence of time points taken from a specified exodus file.
- FunctionDTTimestepper whose steps vary over time according to a user-defined function
- IterationAdaptiveDTAdjust the timestep based on the number of iterations
- LogConstantDTTimeStepper which imposes a time step constant in the logarithmic space
- PostprocessorDTComputes timestep based on a Postprocessor value.
- SolutionTimeAdaptiveDTCompute simulation timestep based on actual solution time.
- TimeSequenceStepperSolves the Transient problem at a sequence of given time points.
- External Petsc Solver App
- ExternalPetscTimeStepperTimestepper that queries the step size of the external petsc solver, and use that as the time step size.
Available Actions
- Moose App
- SetupTimeStepperActionAdd and initialize a TimeStepper object to the simulation.