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Solution in FLuent is giving weird results

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Old   October 28, 2011, 00:25
Default Solution in FLuent is giving weird results
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Deepchand Singh Negi
Join Date: Oct 2011
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Working on K-Epsilon realizable model with energy equation.
Foe the first 22000 iteration I switched off the energy equation. after 22000 iteration I solved for energy only. Now just after 60 iteration I am getting negative heat transfer coefficients , residual rose back to 1e-02 from 1e-07.

What could possibly the reasons
Tried altering boundary condition. Again during simulations I am getting that temperature has been limited to some value (say 1 or 5) in certain number of cells.
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