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.

Available Actions