- variablesA subset of the variables that this time integrator should be applied to
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:A subset of the variables that this time integrator should be applied to
ExplicitMidpoint
Time integration using the explicit midpoint method.
The explicit midpoint method is second-order accurate in time. It is a two-step method and a special case of the 2nd-order Runge-Kutta method.
Description
With , the vector of nonlinear variables, and , a nonlinear operator, we write the PDE of interest as:
Using for the current time step, and for the previous step, the explicit midpoint integration scheme can be written:
This method can be expressed as a Runge-Kutta method with the following Butcher Tableau:
warningwarning
All kernels except time-(derivative)-kernels should have the parameter implicit=false to use this time integrator.
warningwarning
ExplicitRK2-derived TimeIntegrators (ExplicitMidpoint, Heun, Ralston) and other multistage TimeIntegrators are known not to work with Materials/AuxKernels that accumulate 'state' and should be used with caution.
Input Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Set the enabled status of the MooseObject.