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strange things happen with slip boundary

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Old   May 16, 2007, 22:47
Default strange things happen with slip boundary
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lei wang
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Hi everyone:

I model 2d microflow with slip boundary for single-phrase.

Slip boundary given as follow:

u_wall=B*du_wall/dy

When i choose B=68nm,the slip velocity u_wall matches the analytic solution.However when i choose B=680nm,the slip velocity u_wall is twice as large as the analytic solution.

Until now,I haven't found the reason?Could you please help me ?

Best wishes!

lei wang
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