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April 8, 2014, 17:34 |
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#21 |
Senior Member
Robert
Join Date: Sep 2010
Posts: 158
Rep Power: 15 |
Awesome!
Yes, once you want to view the results, 'paraFoam' will bring up a GUI, in which you can view the p and U fields, surface distributions, etc. It is pretty straightforward to use and there are a lot of good tutorials out there. Keep in my mind you need to specify the frequency of writing out the results to be viewed. This is controlled in controlDict. The simulation does not take long at all; should be about a few hours. BUT, the run time is highly variable according to the size of the mesh and the maximum Courant number. I think a high Courant number is set in the case files (30?), and the Courant number used in my validation runs was 2 (more accurate, smaller time step, higher overall run time). So in the beginning of the simulation, you may want to use the high Courant number, and when the force results settle, you can change it to a lower Courant number. You can simply change this in controlDict while the case is still running. On my computer (i7-2700 processor) it ran in a few hours, I think. I ran these back in November last year, so I don't remember exactly, but I know it never took more than a day. Oh, and since this simulation is run in parallel, you should run 'reconstructPar -latestTime' before you view the latest time step in paraFoam. Also, inside the 'parallel' script you should see that I specified it to run on 4 cores. If you want to use a different number, you should change this. To view forces, 'chmod +x f' and run the file named f. If you changed the mesh or operating parameters, you should change them accordingly in the variables at the top of the 'f' script. |
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