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Strange temperature distribution in Three-dimensional square tube two-phase flow

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Old   April 10, 2018, 09:07
Default Strange temperature distribution in Three-dimensional square tube two-phase flow
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Mr wang
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Hello all,
When I use the Fluent to simulate the two-phase flow in a Three-dimensional square tube,I got a trouble in the temperature distribution in the wall.I use a uniformly heat flux in the wall, so the temperature in the wall should be increasing all alone the flow direction.But, when I plot the contour of the temperature in the wall, the temperature near the outlet seems strange,it suddenly decreases.Here is the picture of the temperature near the outlet(the left boundary), the red part means higher temperature.I just want to know what caused this strange phenomenon and how to fix that.
Thanks for your help.
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