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How to determine the separation point on an airfoil??? |
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May 2, 2012, 00:39 |
How to determine the separation point on an airfoil???
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#1 |
Senior Member
mohammad
Join Date: Dec 2010
Location: UK
Posts: 245
Rep Power: 16 |
Hi everybody.
I have solved a 3D blade. I want to extract the location of separation point from the results. Which parameter best shows the Separation Point ? I remember it was one of stress component but i don't remember it clearly. Regards, |
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May 2, 2012, 05:39 |
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#2 |
Senior Member
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This is a point where tangential (shear stress) force vanishes. This is the point where dv_t/dn=0, where v_t is tangential velocity and n is coordinate normal to the surface
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May 2, 2012, 05:47 |
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#3 |
Senior Member
mohammad
Join Date: Dec 2010
Location: UK
Posts: 245
Rep Power: 16 |
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May 2, 2012, 06:27 |
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#4 |
Senior Member
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For flows which are not quasi 2D: the 3D boundary layer flow the point of separation is not necessarily a point of zero surface stress
For more details see this forum http://www.cfd-online.com/Forums/mai...w-problem.html If your flow is quasi 2D, then the separation/reattachment lines will be approximately at the minimum of absolute value of the shear stress |
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Tags |
s.p., separation point |
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