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Free surface BC

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September 20, 2005, 12:14	Free surface BC	#1
mike Guest Posts: n/a	iam solving NS euations and i want to apply free surface boundary condition. What is an appropraite BC for u and v at the free surface. Thanks

September 28, 2005, 02:34	Re: Free surface BC	#2
Mark Carlson Guest Posts: n/a	The free surface should have no affect on the velocity, so you want the derivative across it to be 0... so try a 0 Neumann boundary condition. Non CFD explination in http://www.cc.gatech.edu/~carlson/pa...son-thesis.pdf

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