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calculation of local h for concentric tube HX

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Old   May 24, 2010, 07:22
Question calculation of local h for concentric tube HX
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I am simulating concentric tube HX with two fluids on either side. I know mass flow and temperature. I want to find local h variations along the flow on both sides. How i should define boudary conditions for wall between two fluids. I have defined fluids properties thr. polynomial governing equations as fn of temperature.
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