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Grid independent problem for lid-driven flow

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Old   February 22, 2011, 22:24
Default Grid independent problem for lid-driven flow
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Du pengcheng
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Hi, I have calculated a lid-driven flow at Re=100. I used the pre-conditioned compressible RANS to simulate such imcompressible preoblem.
the u/U on the vertical line x/L = 0.5 match the results of Ghia well using a uniform grid 41*41. But when I cluster the grid twice into 82*82, the result get worse. I do not know what may cause this problem. Thanks!
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