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BC for o-grid help

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Old   September 18, 2006, 04:40
Default BC for o-grid help
  #1
Tay
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May I know what should be the boundary condition for a cylinder in free stream in an o-grid?

I wonder if this is correct:

flow is coming from left to right

fixed inlet velocity for outer mesh on left half of o-grid

assign du/dn and dv/dn for outer mesh on right half of o-grid

no slip velocity for mesh next to cylinder surface

dp/dn=0 on all edges except that at right half of o-grid, p=0 (equal to fixing outlet pressure)

Hope someone can give me some help. Thank you.
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Old   September 18, 2006, 07:48
Default Re: BC for o-grid help
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Joe
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Sounds reasonble.

Dont forget to test the result sensitivity to your BC locations.
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Old   September 18, 2006, 16:14
Default Re: BC for o-grid help
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bounecer
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what about boundary conditions on symetrical airfoil in O-grid, is that the same as cylinder?
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