OOF2: The Manual
QCTimeStepper — Ways of taking a "Quality Controlled" time step.
Subclasses are listed as they appear in the GUI and (in parentheses) as they appear in scripts.
Two Step (
TwoStep) -- Compare the results of one big step to two smaller steps, and adjust the step size to keep the difference within the given tolerance.
QCTimeStepper objects describe ways of taking
a single “Quality Controlled”
time step when solving a time
dependent problem. Given a set of
Field values at time
compute a set of new values at time . The difference
QCTimeStepper and TimeStepper is that
QCTimeStepper also returns an error estimate.
QCTimeStepper is used for the
stepper parameter for AdaptiveDriver.
[At the moment there is only one subclass of
QCTimeStepper, but our intention is to add
more. (If we've added more and haven't updated the manual, please
ignore the previous sentence.)]
 The expression “quality controlled” in this context is stolen from an old copy of Numerical Recipes.