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Boundary Conditions for Rudder in Hemisphere

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Old   March 31, 2008, 20:26
Default Boundary Conditions for Rudder in Hemisphere
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Ronan
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Hi,

Im trying to model a rudder that is fitted to a symmetry wall at the roof of a hemishperical region. There are inlet and outlet conditions that are fine on the front and rear sides of the hemisphere but I cant figure out what conditions are required at the sidewalls of the region? Supposedly the are not walls though, openings maybe? Heres a link to a picture, the highlighted areas are the ones Im talking about: http://img.villagephotos.com/p/2006-...9/untitled.JPG

Thanks Ro
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Old   April 1, 2008, 15:42
Default Re: Boundary Conditions for Rudder in Hemisphere
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Steven
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Hi

Can you not just get rid of them completely and just extend you inlet and outlet to make a two half spheres? What is the situation you are modelling?

Steven
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Old   April 1, 2008, 17:34
Default Re: Boundary Conditions for Rudder in Hemisphere
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Ronan
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Just modeling a rudder at 0 and 15 degrees angle of attack, its a project for University and we've been supplied this mesh...
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Old   April 3, 2008, 16:07
Default Re: Boundary Conditions for Rudder in Hemisphere
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Jonathan
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A Free Slip Wall will have the minimum impact on the solution.

Mind you if the wall is hemispeherical maybe the normal velocity=0 condition might actually be false.

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