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September 13, 2010, 15:45	Freestream BCs	#1
lordvon Senior Member Robert Join Date: Sep 2010 Posts: 158 Rep Power: 16	Hello everyone, For freestreams / external flows, would zeroGradient be the best boundary condition for the top and bottom patches? Thanks.

September 14, 2010, 05:14

sega

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Sebastian Gatzka

Join Date: Mar 2009

Location: Frankfurt, Germany

Posts: 729

Rep Power: 20

Quote:

Originally Posted by lordvon

Hello everyone,

For freestreams / external flows, would zeroGradient be the best boundary condition for the top and bottom patches? Thanks.

If the boundary is far enough away from the geometry: yes!

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