How to define a temperature-dependent specific heat in Fluent?

James · July 24, 2009, 18:11

Hi, Fluent users:

I want to use UDF to define temperature-dependent specific heat in Fluent. Which udf should I use? I thought of DIFINE_PROPERTY. But in the manual, it doesn't mention specific heat can be defined. Thank you for your help in advance!

James

poroshat · July 11, 2013, 14:30

Hi,
For defining specific heat you should use a different macro. It should be defined a Define_Specific_heat. You can find more details in the following pages:

http://www.sharcnet.ca/Software/Flue...udf/node51.htm
http://www.cfd-online.com/Forums/flu...ific-heat.html

Far · July 11, 2013, 15:37

Define a piecewise linear function for your range of temperatures and corresponding known cp values.

July 24, 2009, 18:11	How to define a temperature-dependent specific heat in Fluent?	#1
James New Member James Zhong Join Date: Mar 2009 Posts: 25 Rep Power: 17	Hi, Fluent users: I want to use UDF to define temperature-dependent specific heat in Fluent. Which udf should I use? I thought of DIFINE_PROPERTY. But in the manual, it doesn't mention specific heat can be defined. Thank you for your help in advance! James

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July 11, 2013, 14:30		#2
poroshat New Member Join Date: Jul 2012 Posts: 3 Rep Power: 14	Hi, For defining specific heat you should use a different macro. It should be defined a Define_Specific_heat. You can find more details in the following pages: http://www.sharcnet.ca/Software/Flue...udf/node51.htm http://www.cfd-online.com/Forums/flu...ific-heat.html

July 11, 2013, 15:37		#3
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	Define a piecewise linear function for your range of temperatures and corresponding known cp values.