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#1 |
Member
Ali Noaman Ibrahim
Join Date: Sep 2015
Location: US_Chicago
Posts: 97
Rep Power: 11 ![]() |
Dear All:-
I made different runs for my OpenFoam transient two phase flow case on Stampede on 252 processors. However, I could not create the time files from those runs. To give you an idea about the error I got, I have inserted the obtained results in the attached files. To summerize, I got:- --> FOAM FATAL ERROR: No times selected From function reconstructPar in file reconstructPar.C at line 210. FOAM exiting Any clue ? I appreciate any suggestions. |
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#2 |
Senior Member
Join Date: Aug 2013
Posts: 407
Rep Power: 16 ![]() |
Hi,
I would guess that your simulation terminated before any time output was written. Check your controlDict for the write frequency and also check in one of your processor directory to see if there are any time folders there. If there aren't any there or if your write interval is greater than the time for the simulation, it explains the issue with reconstructPar - it can't find anything to reconstruct! On the other hand, if in the processor directory, there is a time folder present then try running reconstructPar with the -times flag and specify that particular time. Cheers, Antimony |
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#3 |
Member
Ali Noaman Ibrahim
Join Date: Sep 2015
Location: US_Chicago
Posts: 97
Rep Power: 11 ![]() |
Dear Antimony:-
Thank you so much for your suggestions! Regarding the write frequency it had been set as:- writeInterval 0.0004; ( Have a look at the inserted controlDictfile). As addition, there wasnot any time folder available except the folder "0". on the other hand, I tried reconstructPar -time 0:0.4 and on another trial : reconstructPar -time latestTime but I got the same result. My best |
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#4 | ||
Senior Member
Join Date: Aug 2013
Posts: 407
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Hi,
From your log file, the last time step is Quote:
Quote:
Couple of things: 1. If you are reconstructing only the most recent time then: Code:
reconstructPar -latestTime Code:
reconstructPar -time latestTime I am not an expert in interFoam, but it appears to me that the values reported in the log file are not physical. k and epsilon seem to reach large negative values and very high positive values, which to me, aren't right. Also your phase fractions seem to take on negative values. Check your BCs and setup. My guess is that if it runs smoothly, then you will be able to see outputs at the writeInterval frequency. If you are trying to debug, then I suggest you change your writeInterval to 1e-7 or so. Will be slower, but you will know what is happening and maybe that will help you to debug your case. Cheers, Antimony |
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#5 |
Member
Ali Noaman Ibrahim
Join Date: Sep 2015
Location: US_Chicago
Posts: 97
Rep Power: 11 ![]() |
Thanks again for reply.
1. It was a typo when I mistakenly put -time latestTime. I did it as you described but unfortunately it gives the same error. 2. The solved case is a laminar case so there is no consideration for k and epsilon values. However, it is important to me to investigate having negative values for the phase fraction. My guess is:- Beside what you have mentioned about decreasing the time step ( I assume you meant by writeInterval, the deltaT), I would change the fvschemes and make tight convergence criterion with more precise solver instead of linear one. Thanks again Sent from my iPhone using CFD Online Forum mobile app |
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