OOF2: The Manual
| Geometric (Geometric) | ||
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6.5.2. Subclasses |  |
Name
Geometric (Geometric) — Increase timestep by a fixed factor on each step.
Synopsis
Geometric(timestep,factor)
Details
-
Base class:
Schedule -
Parameters:
timestep- Initial timestep. Type: A real number.
factor- Factor by which to increase the timestep on each step. Type: A real number.
Description
A Scheduled
Output with a Schedule set
to Geometric will be performed at time
intervals that grow by a constant factor at each step. If the
associated ScheduleType is RelativeOutputSchedule, the output times
will be offset by the starting time of the computation. The first
interval will be timestep, the second will be
factor times larger.
If factor is less than 1.0 and the end time of
the time evolution is too large, the computation may take a very
long time to complete.
There's a bug (feature?) in the implementation of this class that
may produce surprising results when continuing a
time evolution. If the end time of the calculation does not
coincide with a scheduled output time, the next output time will be
skipped. For example, with factor=2 and
timestep=0.1, the output times are 0.1, 0.3, 0.7,
1.5, etc. If the end time is 1, the actual
output times will be 0.1, 0.3, 0.7, and 1.0. If the solution is
continued, the next time will be 3.1, skipping 1.5.
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| Geographic (GeographicQ2T) |  |
Geometric Strain (GeometricStrain) |