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December 18, 2010, 15:59 |
Unsteady Bounday layer
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I'm trying to solve a problem where I have impulsively started boundary flow past a circlar cylinder.
If we just consider the top half of the cylinder, then an ideal co-ordinate system is one where the x-coordinate represents the distance along the surface of the cylinder, and the y-coordinate is the distance from the cylinder. Now, since this flow is unsteady, I expect that the thickness of the boundary layer changes with time. My question is, does the thickness increase or decrease with time? This is a very new problem to me, but my intuition tells me that the boundary layer gets narrower as the flow progresses. Is this right? |
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