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October 4, 2012, 11:49 |
Wind profile boundary layer problem
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#1 |
New Member
Rafael Valenzuela Musura
Join Date: Feb 2012
Posts: 27
Rep Power: 14 |
Hi everyone I'm simulationg a 3D delta wing in atmospheric conditions. I'm using the simpleFoam-motorBike configuration and everything seems to be ok, but the only problem I have is that the boundary layer formed over the ground isn't constant. It seems to me that when the patch of "inlet" start blowing it generates a boundary separation and that makes the wind profile not to be constant as I need.
Do anyone knows how to implement an inlet wind profile boundary condition?, I've tried swak4Foam to implement the groovy BC but I fail trying to make it work. Please help me, I'm quite desperate here. Thanks |
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October 5, 2012, 10:42 |
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#2 |
Senior Member
Eloïse
Join Date: Jul 2012
Location: Trondheim, Norway
Posts: 113
Rep Power: 14 |
Hi Rafael,
Are you aware of the wall function problems when simulating ABL flows? Blocken described it in some papers such as this one http://www.sciencedirect.com/science...5223100600834X If you don't adapt your mesh and wall function parameters to ABL flow, you will have large variations of your profile through your domain. I hope this already helps a bit. I've never used swak4Foam but I'm planning to test it soon. Let me know if you manage to get it to work! Regards, Eloïse |
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boundary, inlet, profile, wind |
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