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chtMultiRegionSimpleFoam does not write converged time step

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Old   October 9, 2017, 15:31
Default chtMultiRegionSimpleFoam does not write converged time step
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Post from jaydeep (opened a new thread for that)...

Hi Tobi,

A bit unrelated, but since you probably know the answer to this - in V5.0 chtMultiRegion seems not to write out converged timestep.


I am using the same controlDict from tutorials
Code:
application     chtMultiRegionSimpleFoam;

startFrom       latestTime; 

startTime       0;

stopAt          endTime;

endTime         25000;

deltaT          1;

writeControl    adjustableRunTime;

writeInterval   50;

purgeWrite      1;

writeFormat     binary;

writePrecision  10;

writeCompression uncompressed;

timeFormat      general;

timePrecision   6;

runTimeModifiable true;

adjustTimeStep  yes;
Any suggestions?


My feedback:
Actually, you use a steady-state solver. The adjustRunTime should not do anything here. However, I did not get your point. Based on your controlDict, Foam should write out each 50th iteration and if you have the 100, it should remove the 50th one. It would be nice if you can tell us which controlDict it is. Based on adjustRunTime and adjustTimeStep it should not be a tutorial from the chtMu..:SIMPLEFoam solver. Or maybe I missed something?

2nd post:

I realized I used controlDict from one of my other simulations...

What I am observing is:
Say my write control writes out 50, 100 .. Assume that convergence is obtained at 56, now the solver should write out 56. This happens in V4.1 but not V5.0.

(all setup files remain the same)
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Old   October 9, 2017, 15:36
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Hey jaydeep,

I got your point. You meat the following. If one saves only each 1000 iteration but the solver converges after 143 iterations, this one should be saved definitely. I made a check and you are right, the OpenFOAM Dev version do not save the latest time step anymore. I will check it and make a patch for that.

Thanks for reporting.
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Old   October 9, 2017, 15:41
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Thanks!! Appreciate your quick response.
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Old   October 9, 2017, 15:44
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Hi,

I wanted to change the convergence control that I build for 5.0 anyway because I want to have an output of the residual control at the beginning for the log files. If one have different settings, the log file will not show which residual controls were used. It could be, that my implemented residual control is the problem right now. Henry put it into the latest version, so maybe I did a bad job

Give me one or two days. I will reply after I got the patch.

Tobi
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Old   October 10, 2017, 17:45
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Hi,

tomorrow I check my new implementation of the residual control for the log files. Seems to work fine but I have to make further tests. I will tell Henry to update the dev repo with the new files. However, I also fixed the problem with the converged time step. You can get the information here: https://bugs.openfoam.org/view.php?id=2720
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Old   October 13, 2017, 11:07
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Resolved in OpenFOAM-5.x by commit 65e6081e233698126ae8c5bf631c6df358c63b14

Resolved in OpenFOAM-dev by commit 50bedbb217fbc4c7a278838f53615e5136e0e5bd
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Old   October 14, 2017, 11:41
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Thanks Tobi. I saw the update on Issue Tracking.
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