View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
---|---|---|---|---|---|
0000382 | OpenFOAM | Bug | public | 2012-01-07 20:46 | 2012-01-24 07:55 |
Reporter | albertop | Assigned To | henry | ||
Priority | normal | Severity | minor | Reproducibility | always |
Status | closed | Resolution | fixed | ||
Platform | x86_64 | OS | openSUSE | OS Version | 12.1 |
Summary | 0000382: Time step value in controlDict is ignored on restart | ||||
Description | The time step value in controlDict is ignored if a simulation is restarted. The time-step used is read from .../uniform/time instead. | ||||
Steps To Reproduce | - Run the cavity tutorial for icoFoam until a final time t = 0.5s: the time-step will be of 0.005s - Edit controlDict and change: - startFrom latestTime; - endTime 1; - deltaT 0.001; - Re-start the simulation: the time step will still be 0.005s. | ||||
Additional Information | Source: This issue was reported by Daniel Wei on CFD-Online ( http://www.cfd-online.com/Forums/openfoam-solving/95872-feature-bug-deltat-issue.html ) | ||||
Tags | No tags attached. | ||||
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> The time step value in controlDict is ignored if a simulation is restarted. The time-step used is read from .../uniform/time instead. Indeed, and this is the purpose of the value of deltaT in .../uniform/time so that the restart is indeed a restart and behaves as if the run had continued running. To restart overriding the time-step from the previous run simply delete the .../uniform/time file. |
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I have reconsidered the current time-step setting on restart and propose an alternative strategy of using the deltaT in the controlDict if "adjustTimeStep" is not present or set otherwise use that in the "uniform/time" file. See what you think. Commit: 80aa7bf3264222794f58159e1ae6cf8aa2c9bf39 |
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It sounds good to me. With the new approach, users won't have to edit the uniform/time file if they use a constant time step (which is the only case when it makes sense to change it by hand in controlDict anyway in my opinion). Thanks for the change :-) |
Date Modified | Username | Field | Change |
---|---|---|---|
2012-01-07 20:46 | albertop | New Issue | |
2012-01-07 22:11 | henry | Note Added: 0000907 | |
2012-01-07 22:11 | henry | Status | new => closed |
2012-01-07 22:11 | henry | Assigned To | => henry |
2012-01-07 22:11 | henry | Resolution | open => fixed |
2012-01-23 22:57 | henry | Note Added: 0000950 | |
2012-01-23 22:57 | henry | Status | closed => resolved |
2012-01-24 02:18 | albertop | Note Added: 0000952 | |
2012-01-24 02:18 | albertop | Status | resolved => feedback |
2012-01-24 02:18 | albertop | Resolution | fixed => reopened |
2012-01-24 07:55 | henry | Status | feedback => closed |
2012-01-24 07:55 | henry | Resolution | reopened => fixed |