|February 20, 2011, 01:42||
question about boundary conditions
Join Date: Nov 2010
Posts: 108Rep Power: 5
I'd like to simulate the flow over an infinite wing. For this purpose I created a rectangular domain and created part of the wing inside the domain. I have a problem setting the correct side walls (those that are parallel to the airfoil cross sections). If I set them as symmetry from what I understand it basically prevents spanwise flow normal to the sides walls which would not be realistic. Should I set them as periodic in order to simulate an infinite wing?
Please note that this is not a 2d problem.
I'd appreciate it, if you could give me the instructions in steps (I've never done a period BC (if this is what is needed). Thanks!
|February 21, 2011, 01:52||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 8,256Rep Power: 67
If you are expecting your infinite wing to generate 3D structures then you should do with periodic boundaries, with a distance between periodic boundaries at least as long as the biggest 3D structure you expect to see, and preferably several times that size.
Periodic boundaries are just a type of interface. Choose the interface type as periodic and the option as translational.
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