|November 5, 2014, 07:37||
Flow separation in diffuser section of a wind tunnel
Join Date: Mar 2009
Posts: 123Rep Power: 8
Greetings. I want to simulate flow separation in a diffuser section of a wind tunnel. Based on my experimental result, the flow domain is as follows:
Actually I have modified the pitzDaily tutorial of openFoam. From experiment: the inlet velocity is 4m/s. Inlet height is 200mm and straight section length is 630mm. The diffuser angle is 20deg. Assuming 5% fluctuation of U at inlet: k=0.06 and epsilon=0.0911 with other parameter unchanged.
After running the solver, the expected separation was absent in diffuser section.
What should I do to get expected separation in diffuser section?
|November 10, 2014, 08:04||
Join Date: Jun 2011
Posts: 1,278Rep Power: 18
What size of separation region do you expect? The outlet of your domain looks pretty close to the separation point. Maybe it is close enough to damp down the whole separation?
The skeleton ran out of shampoo in the shower.
|diffuser, flow separation, openfoam, wind tunnel|
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