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Old   May 24, 2009, 00:33
Default Boundary Layer
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I have a 2D car body in a tunnel and I am not sure if I have to add a boundary layer to the body and then mesh it. Should I add a boundary layer?

I was looking at the airfoil tutorial and they didn't even use a boundary layer. Can anyone tell me if I have to add a boundary layer? Thanks
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Old   May 24, 2009, 04:19
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Adding BL depends on what you exactly plan to compute.
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Old   May 24, 2009, 06:27
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Well if you need to ask this question I would suggest that it doesn't matter.
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Old   May 24, 2009, 11:41
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if you have a 2D representation of a car, a boundary layer is the least of your problems right now. for a car its real effects will come when you start getting interference drag in three dimensions .
besides, you don't " add a boundary layer", you use mathematics that handle a boundary layer. you need to dig way deeper into what a boundary later is.
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Old   May 24, 2009, 14:01
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For a flow visualization simple geometry with outer body condition is enough.
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