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Simulation on Couette flow

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Old   February 8, 2009, 09:09
Default Simulation on Couette flow
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cheng
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Suppose the Couette flow through a straight channel(no pressure drop between the inlet and outlet), the lower curve wall is fixed, and the upper straight wall is moving at the fixed velocity. How can we simulate the problem numerically? with the methods, such as SIMPLE or stream function-vorticity method? Thanks.

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Old   February 9, 2009, 09:52
Default Re: Simulation on Couette flow
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mettler
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The way I simulated it was instead of having zero velocity at the top wall I would have it set to the velocity of the moving plate. Everything else is the same. If I remember correctly
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Old   February 10, 2009, 10:51
Default Re: Simulation on Couette flow
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Jonas Holdeman
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If you are adventureous, look at http://webpages.charter.net/jtholdeman/IJNMFart1.pdf

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Old   February 11, 2009, 03:13
Default Re: Simulation on Couette flow
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cheng
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Thanks for your suggestion. In this Couette flow, is the overall pressure drop should be zero? is the inlet or outlet pressure constant or variable along the channel height?
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Old   February 11, 2009, 09:29
Default Re: Simulation on Couette flow
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mettler
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I didn't look at Jonas' link, so if I am repeating what it say I'm sorry. If you convert your equations over to the stream-function/vorticity equations your pressure term will drop out, so you won't have to worry about that. And, after solving for the velocities you can back solve for the pressure - if you need to.
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