CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   Boundary Conditions for Rudder in Hemisphere (http://www.cfd-online.com/Forums/cfx/25566-boundary-conditions-rudder-hemisphere.html)

Ronan March 31, 2008 20:26

Boundary Conditions for Rudder in Hemisphere
 
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

Steven April 1, 2008 15:42

Re: Boundary Conditions for Rudder in Hemisphere
 
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

Ronan April 1, 2008 17:34

Re: Boundary Conditions for Rudder in Hemisphere
 
Just modeling a rudder at 0 and 15 degrees angle of attack, its a project for University and we've been supplied this mesh...

Jonathan April 3, 2008 16:07

Re: Boundary Conditions for Rudder in Hemisphere
 
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.



All times are GMT -4. The time now is 02:48.