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No-slip boundary condition for oscillating airfoil |
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May 7, 2013, 19:29 |
No-slip boundary condition for oscillating airfoil
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#1 |
Senior Member
Tarak
Join Date: Aug 2010
Location: State College, PA
Posts: 111
Rep Power: 15 |
Hii,
I'm using the pimpleDyMFoam solver for simulations of flow over a sinusoidally oscillating airfoil. I have an AMI surface which oscillates along with the airfoil. For this problem, can someone tell me how to use the no-slip BC for U at the airfoil surface? I'm thinking about 2 BC's right now: 1) movingwallvelocity 2) oscillatingFixedValue Please let me know which one is better suited for this purpose. Thanks, Tarak |
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May 8, 2013, 02:47 |
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#2 |
Senior Member
HECKMANN Frédéric
Join Date: Jul 2010
Posts: 249
Rep Power: 16 |
I don't understand your question...
A no slip boundary condition is done by setting a relative velocity (wall vs air) equal to zero at the wall. If I understand, your problem is that the wall is actually moving so the wall velocity is not anymore (0 0 0) ? From my understanding of the Dynamic Mesh in OpenFoam, there is a loop of correction to take into account the displacement of the mesh. So a fixedValue (0 0 0) should still be right ?! That's actually a good question |
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May 12, 2013, 06:09 |
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#3 |
Member
Join Date: Apr 2013
Posts: 32
Rep Power: 13 |
movingWallVelocity specifies velocity relative to the (moving) mesh.
fixedValue is velocity relative to space. You should use movingWallVelocity for the no-slip on the foil. |
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June 5, 2013, 07:04 |
stick-slip boundary
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#4 | |
New Member
nauman
Join Date: Jun 2013
Posts: 1
Rep Power: 0 |
Quote:
i am a new member, i am doing some research in fluid dynamic and want some help from any one related to my research how to approach stick-slip conditions thanks nauman |
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