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HaKu April 13, 2011 12:07

initial conditions of Ghia (driven cavity)
 
What values Ghia et al. used in their driven cavity test problem...

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

regards

mettler April 13, 2011 14:26

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.

Eezyville April 13, 2011 15:19

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.

mettler April 13, 2011 15:25

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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