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Old   September 28, 2010, 19:38
Default Boundary Layer Question
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Scott
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Hello,

I am using Star CCM+ 5.04 and I am trying to simulate a boundary layer over a flat plate with a wedge in the middle. I would like to have an accurate simulation of the boundary layer and how to build the boundary layer. I see that I have to input the height of the boundary layer and the number of layers but I really don't know what the real boundary layer would look like if I built the model and put it in a wind tunnel.

Can anyone offer any insight into how one goes about selecting these parameters?

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Scott
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Old   September 30, 2010, 13:50
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John
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I would setup an initial arbitrary mesh, sun the simulation, look at what's happening to the flow, then remesh accordingly depending on what flow structure develops where.
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Old   September 30, 2010, 13:56
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Scott
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An arbitrary mesh for where I think the boundary layer is? I have a mesh for the overall flow volume. Would I turn on the prism layer and define arbitrary thickness and number of layers?

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Old   September 30, 2010, 14:21
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Yes, start with a few prism layers covering the edges and intersections of the wedge and the plate, then add or refine the prism layers as necessary.
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