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

Identify connection between 3 Parts

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 29, 2012, 07:12
Exclamation Identify connection between 3 Parts
  #1
Member
 
Mahmoud Gabr
Join Date: Aug 2012
Location: Egypt
Posts: 30
Rep Power: 5
MGabr is on a distinguished road
Dear All
I am studding orifice behavior in high pressure systems and i have 3 parts the first is inlet pipe with flange and i Booleaned them in one part ( in DesignModeler ) , second part is the orifice and the third is the outlet pipe with flange so the sequence would be [ inlet pipe > flange > orifice > flange > outlet pipe ]

http://imageshack.us/photo/my-images/687/orifice.jpg/


i want to identify connection in Ansys mechanical between 1st flange , orifice & 2nd flange .
i identified them as contact connection between (orifice and 1st flange) and (orifice and 2st flange) and (1st flange and 2st flange) with contact type ( bonded )
when i run solver followed error appeared
+--------------------------------------------------------------------+
| ERROR #002100061 has occurred in subroutine SERVE_CLIENTS. |
| Message: |
| The connection between this CFX process and an external process |
| has died unexpectedly. The following error was received: |
| External process : ANSYS |
| Error experienced : Read |
| |
| ** This error is fatal: Terminating ANSYS CFX Solver execution ** |
| Please review the output, error and log files from both the CFX |
| and external processes to determine the cause of the error. |
+--------------------------------------------------------------------+
Could anyone help in correcting my model for solving this problem
best regards
M.Gabr
MGabr is offline   Reply With Quote

Old   November 29, 2012, 12:08
Default
  #2
Senior Member
 
Bruno
Join Date: Mar 2009
Location: Brazil
Posts: 236
Rep Power: 12
brunoc is on a distinguished road
Hi Mahmoud,

All this message says is that CFX lost its connection to ANSYS. This usually happens when ANSYS diverges. You should check your structural analysis model to see what could be causing this.

If possible, try running your structural model using a pressure level close to the one expected from CFX, or do a 1-way FSI analysis, and see if ANSYS is able to converge from that simulation. If it doesn't, the problem is in your structural model. If it does, the problem is most likely in the solver coupling parameters (assuming the CFX model is able to run on its own).

Cheers
brunoc is offline   Reply With Quote

Old   November 29, 2012, 12:51
Default
  #3
Member
 
Mahmoud Gabr
Join Date: Aug 2012
Location: Egypt
Posts: 30
Rep Power: 5
MGabr is on a distinguished road
Hi Brunoc.
I had run this case before but as one part not 3 but i found that orifice material differ from pipe material so i had to divide them to 3 parts and use contact option.

now Solver solve the fluid domain loop or the outer loop but when try to start the external loop it failed.

Do you think that i used contact option correctly or i should other option for defining the bonding condition between ( flange-orifice-flange )

Thanks alot
M.Gabr
MGabr is offline   Reply With Quote

Old   November 29, 2012, 13:01
Default
  #4
Senior Member
 
Bruno
Join Date: Mar 2009
Location: Brazil
Posts: 236
Rep Power: 12
brunoc is on a distinguished road
If your model use to run and after you changed some parameters is doesn't, it's likely that something in your new model is causing the problem.

You should get each model running before you couple them; that means your structural model should be running without problem as a standalone model (without the FSI coupling - if the CFD pressure is an important part of the result, just import it into your structural model using WB). Get the correct settings for it and only than you should go back at coupling both codes.
brunoc is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Radiation interface hinca CFX 15 January 26, 2014 18:11
[ICEM] Generating mesh for modified parts in ICEM without changing mesh of other parts a.habibi ANSYS Meshing & Geometry 5 October 4, 2012 05:10
problem loading UDF library in parallel cluster Veera Gutti FLUENT 7 July 3, 2011 09:15
How to handle suction and pressure side of an airfoil as two different parts? TKE ANSYS Meshing & Geometry 0 March 4, 2011 08:48
One to one connection for periodic faces Al CFX 0 August 29, 2007 02:34


All times are GMT -4. The time now is 22:37.