OOF2: The Manual
Adaptive (AdaptiveDriver) — Take variable sized timesteps.
- Maximum permissable error. Type: A real number.
- Initial step size. Type: A real number.
- Minimum time step size. Type: A real number.
- How to compute the error for each degree of freedom. Type: An object of the
- Time stepping method. Type: An object of the
AdaptiveDriver objects are used as the
time_stepper parameter in AdvancedSolverMode when solving a
time-dependent problem with adaptive time
AdaptiveDriver uses the
stepper to take single steps. If the
resulting error estimate is larger than the given
tolerance, the step is rejected and is repeated
with a smaller . If the error is
less than the
step size will be increased on the next step.
initialstep is the step size to use at the
beginning of the computation. Once a computation is under way, the
step size is determined by the error estimate from the previous
If the error cannot be reduced below
without using a step size below
computation will be aborted. Often this means that the problem is
badly posed, or that the
errorscaling is in
errorscaling defines what is really meant by
“the error estimate is larger than the given
tolerance”. It determines how a set of
errors in each
Field component value at each
Node is reduced to
a single number that can be compared with the