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Old   October 18, 2001, 08:28
Default Free Surface Boundary
Murat Cakan
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I want to model flow around a ship hull. I do not know how to account for the free surface boundary. You may assume that the hull is positioned in an very large body of water.

Thanks in advance.
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Old   October 18, 2001, 10:29
Default Re: Free Surface Boundary
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The problem is hard. I tried to do the same at University.

I had good result using simmetry boundary condition on a flat free surface, in a case with low Froude number.

I've not obtained good results studying free surface too.I've used Volume Of Fluid method by Hyrth,there are a large literature, see Fluent manuals first.

Now I'm trying to use Star-CD, but there are other problems calculating viscous stress and Y+.

Good luck Giovanni

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Old   October 18, 2001, 11:57
Default Re: Free Surface Boundary
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I have had some trouble with the VOF method and other multi-phase in Fluent.

I will be shortly trying cfx. I have been told that it is very good on multi-phase.

There is a new free-surface model in cfx5, but I haven't tried it yet.

I will let you know how I get on!
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Old   November 30, 2001, 00:01
Default Re: Free Surface Boundary
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Hi, I think you can try the VOF Model to simulate the flow around a ship's hull. I'm a novice at FLUENT,I want to model flow around a ship's hull also,but i don't know how to import the offset of the ship into GAMBIT for grid generation.Would you please help me. thanks a lot
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