# Thermal conductivity in CFX

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 May 27, 2009, 06:37 Thermal conductivity in CFX #1 New Member   Join Date: Mar 2009 Posts: 21 Rep Power: 9 Hi there! I have a question concerning thermal conductivity in CFX. In Ansys Workbench i can define this material-dependent variable but in CFX i didnīt find where to set this value. Can you please explain me where to find this option? And, if there is no option to set, could you explain me why this parameter is not important for CFX? Thanks in advance!

 May 27, 2009, 08:15 #2 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 12,638 Rep Power: 98 Hi, You can set different thermal conductivities for various materials in CFX. In CFX-Pre it is under materials and a few tabs under that (don't have CFX in front of me so can't tell you exactly what - I know you have to expand a few things to see it). Glenn Horrocks

 June 2, 2009, 01:19 #3 New Member   Join Date: Mar 2009 Posts: 21 Rep Power: 9 Hi! Thanks a lot, found it!

July 14, 2009, 22:22
#4
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Rogerio Jack
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Location: Brazil
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Use this equation (an example, of course) below with A and B for you own material, named A and B constant variables in CFX-Pre:

Thermalconductivity
(B*(19453.29701*(T/A)^3.07678)/(4.73947^3.07678+(T/A)^3.07678))

A 1.0 [K]
B 1.0 [W m^-1 K^-1]

Quote:
 Originally Posted by ehrenwirth Hi there! I have a question concerning thermal conductivity in CFX. In Ansys Workbench i can define this material-dependent variable but in CFX i didnīt find where to set this value. Can you please explain me where to find this option? And, if there is no option to set, could you explain me why this parameter is not important for CFX? Thanks in advance!

 July 15, 2009, 04:00 #5 Member     Rui Igreja Join Date: Mar 2009 Location: Aveiro Posts: 68 Blog Entries: 1 Rep Power: 9 . __________________ Rui

 July 15, 2009, 04:51 #6 Senior Member     George Join Date: Mar 2009 Location: Birmingham, UK Posts: 257 Rep Power: 10 muuust restrain ... must .... cant do it... __________________ Top 4 tips 1. Knowledge is everything and Ignorance is dangerous. 2. Understand your limitations and try to eliminate them. 3. Get yerself a bike and hoon the chuffer. You will soon learn why dogs like to hang their heads out the car window. 4. Please before asking any questions on how to run simulations in CFX, go though all the tutorials

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