heat transfer with s2s radiation model in fluent -- CFD Online Discussion Forums

July 23, 2008, 11:50	heat transfer with s2s radiation model in fluent	#1
D. L. Guest Posts: n/a	Hi, Recently I am running a model to study the heat transfer effect. The model is a hot object in a room. The B.C. for the hot object is fixed temperature, the B.C. for the room surfaces is 0 heat-flux. The s2s radiation model is on. After I got the result, I found the convection heat transfer is extremely high. The wall.-func.-heat-trans.-coeff. is couple of hundreds at many surfaces. If I turn off the rad model, the wall.-func.-heat-trans.-coeff. is back to normal (10~100). Could anybody tell me what's the reason that the wall.-func.-heat-trans.-coeff becomes so high after the radiation model is on? Thanks very much. D. L.

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