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negative heat transfer coefficient in contour |
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sharad kumar
Join Date: Apr 2010
Posts: 2
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Hi,
I wanted to ask that i am doing simlation of a ammonia containing shell and tube heat exchanger in 2-d in cfd..we have given the boundary condition as temperature of ammonia at inlet and the temperature of tube walls we have also given the inlet velocity of ammonia and also given a phase change of ammonia vapor into liquid by condensation near the tube walls.there is a flow of water inside the tubes..but at last we are getting negative heat transfer cofficient in contour in the heat exchanger...what can be the reason behind it and how to rectify it. Last edited by sharad_kumar101; April 21, 2010 at 10:05. |
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#2 | |
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sharad kumar
Join Date: Apr 2010
Posts: 2
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2-d, shell and tube |
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