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-   -   Wind tunnel simulation (http://www.cfd-online.com/Forums/openfoam/109825-wind-tunnel-simulation.html)

ferazpit November 27, 2012 15:11

Wind tunnel simulation
 
Hi! I'm simulating my school's wind tunnel with the simpleFoam solver.
The results showed that, for example, velocities converge but do not correspond to those expected. The measurements taken in the tunnel return values ​​of between 1.5 and 2 m/s at the inlet, around 16 m/s in the working area and 2 m/s at the outlet, where the impeller is located. I expected values ​​close to these ones, but the simulation returns higher values.

I ask you if you can give me some information to find out where the error is.

Here are the p and U files:

https://docs.google.com/open?id=0B4V...0xHVU1oVWlJbWM
https://docs.google.com/open?id=0B4V...mZId2liY0s1Y3c


Here are the fvSchemes, fvSolution, RASProperties and transportProperties files:

https://docs.google.com/open?id=0B4V...210djhFTGExcHM
https://docs.google.com/open?id=0B4V...TlRVm9SLWdpR1U
https://docs.google.com/open?id=0B4V...E9nQzVjUDZtdkU
https://docs.google.com/open?id=0B4V...FFhVzg5UHRjUm8


Here are some pictures of the results:

'y' normal slice

0 sec: https://docs.google.com/open?id=0B4V...3pJNUVGRkZkX2s
5 sec: https://docs.google.com/open?id=0B4V...VBrS0kxRkp4TlU
10 sec: https://docs.google.com/open?id=0B4V...GZ4bGZabXVROGc
15 sec: https://docs.google.com/open?id=0B4V...WFrUVZHUGVFcjg
20 sec: https://docs.google.com/open?id=0B4V...WZWbmw2U3Fpbzg
175 sec: https://docs.google.com/open?id=0B4V...GhId20wT193T0k
350 sec: https://docs.google.com/open?id=0B4V...k9JbmVCZjJLaDQ
500 sec: https://docs.google.com/open?id=0B4V...lRxbWpnbDdGUzQ

'z' normal slice

0 secs: https://docs.google.com/open?id=0B4V...TkyZkcyWDduWUk
5 secs: https://docs.google.com/open?id=0B4V...zk1ejc4NG9FX00
10 secs: https://docs.google.com/open?id=0B4V...0w2aHBNUlJpVTA
15 secs: https://docs.google.com/open?id=0B4V...FpIRGZLbkdTVHc
20 secs: https://docs.google.com/open?id=0B4V...lRxbWpnbDdGUzQ
175 secs: https://docs.google.com/open?id=0B4V...VdudkhSYV9uTzA
350 secs: https://docs.google.com/open?id=0B4V...W1SM04wZHRtY00
500 secs: https://docs.google.com/open?id=0B4V...zYzemJrMEUyZ3M


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