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

error in COMSOL:'ERROR:6164 Duplicate Variable'

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 26, 2008, 17:34
Default error in COMSOL:'ERROR:6164 Duplicate Variable'
  #1
bhushas
Guest
 
Posts: n/a
Hello,

I am working on a model which has 'level set 2 phase flow --> chemical engineering module' and 'Axial symmetry, stress-strain with fluid interaction --> fluid structure interaction --> structural mechanics module'. basically i have a model in which there are 2 fluids of different density and low density fluid is at bottom initially. as it moves up, it will exert force on a flexible cantilever beam attached in midway. i am finding the effect on that beam including displacement and stresses. i am having following error 'ERROR : 6164' and following detail message. ***********************************************

Exception:

com.femlab.jni.FlNativeException: Duplicate variable name Messages:

Duplicate variable name

- Variable: r

- Variable: rTIME

- Variable: z

- Variable: zTIME

- Variable: r

- Variable: rTIME

- Variable: z

- Variable: zTIME

- Variable: r

- Variable: rTIME

- Variable: rr2

- Variable: rz2

- Variable: z

- Variable: zTIME

- Variable: zr2

- Variable: zz2

Stack trace:

at xmodel.cpp, row 840, ()

at com.femlab.xmesh.Xmesh.meshExtend(Native Method)

at com.femlab.xmesh.Xmesh.meshExtend(Unknown Source)

at com.femlab.xmesh.MeshExtendRunnable.run(Unknown Source)

at com.femlab.server.FlRunner.run(Unknown Source)

at com.femlab.util.ad.run(Unknown Source)

can anyone please show me what can i do in this situation?
  Reply With Quote

Old   May 30, 2008, 05:35
Default Re: error in COMSOL:'ERROR:6164 Duplicate Variable
  #2
Magnus Ringh
Guest
 
Posts: n/a
Hi,

The explanation of this error message in the Diagnostics section of the COMSOL documentation says:

A variable name has two different definitions. For instance, the same variable name appears two or more times for a dependent variable, a constant, an expression variable, or a coupling variable. Remove or rename one of the variables.

In your case, you are combining two in themselves rather advanced interfaces: the level-set two-phase flow interface and an FSI coupled multiphysics interface. The FSI coupling includes an ALE application mode that provides a moving mesh, so there are two different "frames" in the model, as well as two different application modes for the fluid flow.

It might be a good idea to first solve a simpler case and then add more physics incrementally.

You can also contact the COMSOL support staff at www.comsol.com/support or support@comsol.com

Hope this helps,

Magnus Ringh COMSOL

  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
OpenFoam-1.6-ext Allwmake compilation error - one last barrier Pat84 OpenFOAM Installation 15 July 25, 2012 22:49
Condensation as an additional variable Clark Griswold CFX 2 April 21, 2012 08:20
Embed explicitSetValue in chtMultiRegionFoam samiam1000 OpenFOAM 2 April 18, 2012 06:14
Instalation on ubuntu 710 basilwatson OpenFOAM Installation 17 March 16, 2012 21:16
variable viscosity -NOT! George Bergantz Main CFD Forum 15 September 19, 2000 15:28


All times are GMT -4. The time now is 04:34.