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: 18	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

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Calculation of heat generation in Fluent for 2D	krishnachandranr	FLUENT	0	April 8, 2009 00:31
Missing math.h header	Travis	FLUENT	4	January 15, 2009 12:48
how to impose experimental dat as boundary conditi	Rogerio Fernandes Brito	FLUENT	14	November 25, 2008 06:47
UDF FOR UNSTEADY TIME STEP	mayur	FLUENT	3	August 9, 2006 11:19
heat transfer coefficient	Peter	Main CFD Forum	7	August 26, 2001 19:44

July 11, 2013, 14:30		#2
poroshat New Member Join Date: Jul 2012 Posts: 3 Rep Power: 15	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: 4,565 Blog Entries: 6 Rep Power: 55	Define a piecewise linear function for your range of temperatures and corresponding known cp values.