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B C Shi January 9, 2006 11:37

Natural convection with High Ra
 
I am simulating the natural convection in an enclosed cavity (H/W=4)with high Ra up to 10^12 and the time averaged Nu at hot wall for Ra<=10^10 are agree well with those by Le Quere et al in 1995. But I have not found the results for larger Ra now. Would you please tell me where I can find them.

Thanks in advance.

Baochang

Alexey January 10, 2006 10:18

Re: Natural convection with High Ra
 
See Betts, P. L., and Bokhari, I. H., 2000, "Experiments on turbulent natural convection in an enclosed tall cavity", Int. J. Heat & Fluid Flow, 21, pp. 675-68. It seems to me that Ra based on the heghit is about 2e+10 there.

Alexey.


Baochang January 10, 2006 23:54

Re: Natural convection with High Ra
 
Dear Alexey,

Thanks a lot. For larger Ra?

Baochang

FELIPE January 13, 2006 14:59

Re: Natural convection with High Ra
 
SEE

http://cfd.me.umist.ac.uk/tmcfd/expdata/bettbok.html

FOR EXPERIMENTAL RESULTS OF

Experiments on Turbulent Natural Convection in an Enclosed Tall Cavity P.L. Betts & I.H. Bokhari


lawankar s m January 17, 2006 06:10

flow through rectagular cavity
 
flow (generated by turbulent natural convection)through long rectagular cavity (length=1.5m, width=0.15m, cavity=0.002m )please help me to form nevier stroke equation and procedure to solve it by finite volume method


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