# orthotropic thermal conductivity

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 April 28, 2008, 08:21 orthotropic thermal conductivity #1 Alex Guest   Posts: n/a Dear all, How can i define an orthotropic thermal conductivity in a cylindrical coord frame? Could you give me an example of CEL that indicates how to define the axis (sub-object of the CEL) I give you some details: i defined a solid domain by choosing the cylindrical coord frame (in the initial conditions tabs) i specified a new material ( this material is define in the cylindrical coord frame. Thanks a lot Alex

 April 26, 2010, 18:47 Ortho k in CFX #2 New Member   Craig Hildreth Join Date: Mar 2009 Posts: 22 Rep Power: 8 Does anyone have any idea how to define orthotropic thermal conductivity in CFX 12? I know it is a beta feature (ref. manual) but I am unsure how to define it. Sorry to bring up an old thread.

 April 26, 2010, 19:09 #3 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 10,662 Rep Power: 84 You will have to talk to CFX support.

 April 26, 2010, 23:45 #4 Member   Dmitry Volkind Join Date: Jan 2010 Location: Chelyabinsk, Russia Posts: 58 Rep Power: 7 Hello! Orthotropic conductivity was present in "CCL Objects" in CFX 11 Reference Guide, but I couldn't actually make it work with CFX 11 (unrecognized CCL). However, it did work with CFX 12.1 though no CCL was given in the CFX 12.1 Reference Guide (developers must have had reasons to hide it). Here is what Reference Guide 11.0 says (I hope it's legal to quote that): Option = Orthotropic Cylindrical Components Essential Sub-Objects AXIS DEFINITION: Specifies if we are using a Coordinate Axis or Two points to define a local cylindrical axis. "Coordinate Axis" currently only supports the global x, y, or z axis. Essential Parameters Thermal Conductivity r Component: r component of orthotropic cylindrical thermal conductivity Thermal Conductivity Theta Component: Theta component of orthotropic cylindrical thermal conductivity Thermal Conductivity Axial Component: Axial component of orthotropic cylindrical thermal conductivity Option = Orthotropic Cartesian Components Essential Parameters Thermal Conductivity X Component: x component of orthotropic Cartesian thermal conductivity Thermal Conductivity Y Component: y component of orthotropic Cartesian thermal conductivity Thermal Conductivity Z Component: z component of orthotropic Cartesian thermal conductivity

 April 27, 2010, 17:51 #5 New Member   Craig Hildreth Join Date: Mar 2009 Posts: 22 Rep Power: 8 Thanks, dvolkind. I tried substituting THERMAL CONDUCTIVITY: Option = Orthotropic Cartesian Components Thermal Conductivity X Component= # [W m^-1 K^-1] Thermal Conductivity Y Component= # [W m^-1 K^-1] Thermal Conductivity Z Component= # [W m^-1 K^-1] END for THERMAL CONDUCTIVITY: Option = Value Thermal Conductivity = # [W m^-1 K^-1] END with no luck using the command editor in materials section.  Beta options are on.  CFX threw an error. If you have any ideas what may be wrong with my CCL please chime in. My ANSYS support status is in limbo (boss hasn't renewed yet), so I can't contact them. If anybody else has implemented ortotropic thermal conductivity please feel free to respond. Thanks all! Last edited by flattie; April 27, 2010 at 17:52. Reason: More explanation.

 April 27, 2010, 23:25 #6 Member   Dmitry Volkind Join Date: Jan 2010 Location: Chelyabinsk, Russia Posts: 58 Rep Power: 7 I 've seen the error, too. Nevertheless, the solution was successful. I didn't check the results myself, but the guy who did said they were OK. I'm not sure if he can be trusted, he just asked me to run his .def in 12.1. Try running the solution. If it doesn't work I can try it on my machine.

 April 28, 2010, 11:10 #7 Senior Member     George Join Date: Mar 2009 Location: Birmingham, UK Posts: 257 Rep Power: 9 check the rules file, if its there it will tell you the correct syntax __________________ 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

 April 30, 2010, 12:09 Working! #8 New Member   Craig Hildreth Join Date: Mar 2009 Posts: 22 Rep Power: 8 I got it to work. I was using WB 2.0 - ghast - and found you had to use a 'CFX - BETA' cell rather than just turning beta features on in a normal cell. It will still throw errors but in the project page you can right click on the cell and say suppress physics errors. After that you link it to a results cell and it appears to be solving fine now. I would imagine this works just fine in CFX-standalone with beta features on. Thanks to all who replied!

 April 20, 2012, 05:21 #9 Senior Member   Join Date: Nov 2009 Posts: 125 Rep Power: 7 Could this work on CFX 13.0? regards, mactech001

 April 20, 2012, 07:44 #10 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 10,662 Rep Power: 84 No idea. V14 is the current version and beta features can get changed between releases, or moved to a supported feature. Have a look in the reference guide, and/or the RULES file to check.

May 10, 2012, 04:48
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Quote:
 Originally Posted by flattie I got it to work. I was using WB 2.0 - ghast - and found you had to use a 'CFX - BETA' cell rather than just turning beta features on in a normal cell. It will still throw errors but in the project page you can right click on the cell and say suppress physics errors. After that you link it to a results cell and it appears to be solving fine now. I would imagine this works just fine in CFX-standalone with beta features on. Thanks to all who replied!

Dear flattie,

May i ask, what did you mean by 'turning beta features on in a normal cell' please? what is difference between 'CFX-BETA' cell and normal cell, and how do i turn beta features on in a normal cell please?
__________________
Thank you for your kind attention.

Kind regards,
mactech001
Currently using: ANSYS v13

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