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UDF for heat source on surface instead of the whole cell zone??

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Old   November 24, 2011, 13:48
Default UDF for heat source on surface instead of the whole cell zone??
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i want to demonstrate the water flow inside a porous media under heat on the surface. i have only one cell which is porous. but in the cell zone condition, i can just choose for the source term or fixed values which make the cell zone heat averagely. but i want the heat is come from outside, which the center should remain the initial for quite a long time while the outer part of the cell should be nearly to the certain temperature. i just can't find a option to do this. do i need a UDF to do this? and may i ask how? thank you so much.
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Old   December 7, 2011, 07:55
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push....can anyone help me??

i really want to know how to do it, thank you.
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Old   December 7, 2011, 10:11
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Why not using Heat Generation Rate boundary condition?
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Old   December 7, 2011, 10:16
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Quote:
Originally Posted by fox000002 View Post
Why not using Heat Generation Rate boundary condition?
because i don't know the heat generation rate
i can just assume that the temperature cotton surface is always equal to the temperature of the hot air.
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Old   December 8, 2011, 12:54
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do anyone know please tell me please.

thank you so much!!!
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