CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

Orthotropic Properties in ANSYS CFX 14.5 (XY, YZ, XZ)

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 4, 2014, 23:34
Default Orthotropic Properties in ANSYS CFX 14.5 (XY, YZ, XZ)
  #1
New Member
 
Mark
Join Date: Apr 2014
Location: Draper, UT
Posts: 3
Rep Power: 12
lmark84l is on a distinguished road
Greetings,

I am doing a simulation in which I need to create several solids with orthotropic properties. I've searched on these great CFD Online forums, but haven't been able to find a solution that works entirely.

I have confirmed that CFX is interpreting my CEL correctly through the output file for the X, Y, and Z axes. The snippet looks like this:

THERMAL CONDUCTIVITY:
Option = Orthotropic Cartesian Components
Thermal Conductivity X Component = .8 [W m^-1 K^-1]
Thermal Conductivity Y Component = 144.75 [W m^-1 K^-1]
Thermal Conductivity Z Component = 144.75 [W m^-1 K^-1]
END

I also suppress the GUI errors pertaining to these in order to get the simulation to run, which runs just fine.

The problem is that I have created a simplified ANSYS Workbench model to validate the CFX approach, but the results do not match with all variables the same. I believe what might be the culprit is XY, XZ, and YZ values of thermal conductivities that are being set to zero in the simulation (you can do a contour of these in CFX post). Has anyone else encountered this, or know who to set the off axes properties?

I've been working with a CFX consulting group and they are going to ping ANSYS to get some answers, but I was wondering if anyone knew anything in the meantime. I'll let everyone know what I find out since this topics appears to come up a lot.

Thanks in advance for any insight.

Cheers,
Mark
lmark84l is offline   Reply With Quote

Old   August 5, 2014, 02:35
Default
  #2
Senior Member
 
Martin_Sz's Avatar
 
Marcin
Join Date: May 2014
Location: Poland, Swiebodzin
Posts: 313
Rep Power: 13
Martin_Sz is on a distinguished road
Can You send a drawing of this problem with thermal conductivity on each side which you want to define ?
Best regards
Martin_Sz is offline   Reply With Quote

Old   August 6, 2014, 12:34
Default
  #3
New Member
 
Mark
Join Date: Apr 2014
Location: Draper, UT
Posts: 3
Rep Power: 12
lmark84l is on a distinguished road
Quote:
Originally Posted by Martin_Sz View Post
Can You send a drawing of this problem with thermal conductivity on each side which you want to define ?
Best regards
Thanks for the reply. I'll try to post some pictures later tonight.

After more debugging and speaking with ANSYS, it appears that the orthotropic properties are behaving correctly. The problem appears to be with a solid to solid domain interface in CFX. Essentially, there is a large temperature rise across the interface that should not be present. I will try to upload some picture later tonight.

Cheers,
Mark
lmark84l is offline   Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
ANSYS CFX boat hull analysis/freesurface solution (Help) idefix26 CFX 7 August 30, 2018 03:56
Compressible Flow in Ansys CFX bcheruk CFX 15 July 6, 2017 07:30
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 07:27
ANSYS CFX Tutorial Rashid CFX 25 December 20, 2012 02:22
Ansys 13 CFX problem on LInux Opensuse 11.4 serendipity CFX 10 August 7, 2012 04:24


All times are GMT -4. The time now is 12:45.