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Writing UDF for Unsteady Temperature change ?

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Old   April 12, 2006, 17:27
Default Writing UDF for Unsteady Temperature change ?
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Hi I'm a newbie in FLUENT. I have a couple of qtns regarding natural convection between two fluids.

1)I have two fluid zones(Water and air) in contact with each other. What boundary cdn. should I give at the interface to model convection between them?

2) Also, How to write an UDF for temperature changing with time in water at rest, when a constant heatflux is applied to its base?

Kindly reply. Thanks........ baggi ----------
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