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drag coefficient is so small

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Old   January 14, 2010, 00:55
Default drag coefficient is so small
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byoungin2
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the drag coeff. of 2d circular tube is about 1 in the literature.
but my obtained result is about 0.01
reynolds number is about 600
k omega model and enhanced wall treatment is used
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Old   January 14, 2010, 00:56
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Old   February 23, 2010, 16:24
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Have you found out why? I seem to have the same problem. I am simulating the flow past a cylinder, and find out the drag coefficient is an order of magnitude lower than what in the textbook when Re is around 100.

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