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Old   July 25, 2007, 05:34
Default Obtaining fluid thermal conductivity
  #1
Meng Wai Woo
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Dear all,

Hope someone can help me with this.

I have been trying to extract the cell fluid thermak conductivity with the macro:

C_K_EFF(c,t)

This macro was stated in the UDF manual. However, during compilation, a msg says that this macro requires 3 input. How come 3 inputs are required when only c & t needs to be specified?

If anyone know why or how to solve this, please help me.

Cheers, Woo
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Old   July 28, 2007, 11:44
Default Re: Obtaining fluid thermal conductivity
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Matt
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Woo,

The actual call to get the effective thermal conductivity of the material in the cell is: C_K_EFF(c,t,prt) where prt is the turbulent Prandtl number.

Hope this helps.

m
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Old   July 29, 2007, 21:14
Default Re: Obtaining fluid thermal conductivity
  #3
Meng Wai Woo
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Thank you. This is what I am looking for.

Can I find out more from you on where to obtain such information in the future. Manual etc.? as the fluent manual does not put this down.

Cheers.
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Old   July 30, 2007, 11:07
Default Re: Obtaining fluid thermal conductivity
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Matt
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Try the UDF manual that should come with Fluent. Looks like you can also find it here

http://www.hpcc.msu.edu/doc/fluent/h...f/main_pre.htm

m
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Old   July 30, 2007, 21:10
Default Re: Obtaining fluid thermal conductivity
  #5
Meng Wai Woo
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Thank you. The version I had did not have the Prantl number printed.

Cheers.
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