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Stopping and starting fluent corrected problem but I don't know how to reproduce it

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Old   June 3, 2016, 14:05
Question Stopping and starting fluent corrected problem but I don't know how to reproduce it
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Campbell
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A case of the simulation I am working on was run and it was stopped and started twice. This is the only cause that produced the eddies we see in the experimental case. Does anybody know why this might happen? Do you know what changes in the program when you stop and restart?

We are using Fluent 16.2 and using the DES k omega SST solver.


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Old   June 6, 2016, 13:06
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I am also interested in this problem.
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Old   June 6, 2016, 14:09
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Quote:
Originally Posted by cdixonm View Post
A case of the simulation I am working on was run and it was stopped and started twice. This is the only cause that produced the eddies we see in the experimental case. Does anybody know why this might happen? Do you know what changes in the program when you stop and restart?

We are using Fluent 16.2 and using the DES k omega SST solver.


Thank you
Campbell
May this has introduced some disturbance in flow. Make sure you run double precision solver and also check your mesh.
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Old   June 7, 2016, 16:54
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For my case (self-oscillating cavity flow) I am using double precision and my mesh is less than y+=1 (about 6e-5). I have noticed that when I don't have a consistently oscillating flow regime I can stop and restart the simulation and it will then start behaving as expected. I had a monitor chart to show this, but I have misplaced it...
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eddy viscosity, fluent 16.2, restart solution, solver options, stop simulation

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