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initial conditions of Ghia (driven cavity)

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Old   April 13, 2011, 12:07
Default initial conditions of Ghia (driven cavity)
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Hassan
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What values Ghia et al. used in their driven cavity test problem...

density?
viscosity?
and
velocity on the upper wall???

regards
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Old   April 13, 2011, 14:26
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Andrew
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I think I used water when I tried to verify Ghia's work. I got really close. But, as for the velocity you should non-dimensionalize everything. Then, for the lid V= 1.
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Old   April 13, 2011, 15:19
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I would non-dimensionalize everything first then dimensionalize them with respect to the Reynolds number used. Or assume a characteristic length of 20cm, nu = 10^(-3) m^2/s, and U_lid = 2 m/s. Those were the conditions we used for her project. Its funny when I saw this thread because K. Ghia is my advisor.
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Old   April 13, 2011, 15:25
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I think I did mine using the stream-function/vorticity..this was a few years ago, so I can't be 100% sure.
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