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

ANSYS and CFX not talking in two-way FSI?

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 27, 2011, 04:16
Default ANSYS and CFX not talking in two-way FSI?
  #1
New Member
 
Donald Brashear
Join Date: Jan 2011
Posts: 3
Rep Power: 15
brashear is on a distinguished road
Hi,
I get the following error when I try to update my CFX-Pre:

In Analysis 'Flow Analysis 1' - Analysis Type: The specified Mechanical Input File 'ds.dat' can not be found or does not contain any valid interfaces. Specify an input file with valid interfaces, update the file location if it has moved or set the External Solver Coupling option to "ANSYS MultiField via Prep7".

I started the FSI analysis by starting an ANSYS transient analysis, which I confirmed to be solvable by itself. Then I deleted the results then to "Transfer Data to New -> Fluid Flow (CFX)" from the setup. I defined my fluid-structure interface loads in ANSYS.

I tried pointing manually to the 'ds.dat' file under dir\dp0\SYS\MECH\ds.dat, but the same error results.

Any thoughts? Thanks
brashear is offline   Reply With Quote

Old   January 31, 2011, 12:17
Default
  #2
Senior Member
 
Join Date: Apr 2009
Posts: 531
Rep Power: 21
stumpy is on a distinguished road
In the Project Schematic delete the link between the ANSYS Setup cell and the CFX Setup cell, then re-create it and refresh CFX-Pre. That usually fixes this problem for me.
stumpy is offline   Reply With Quote

Old   May 5, 2012, 08:32
Default
  #3
New Member
 
Ivailo Rusev
Join Date: May 2012
Posts: 4
Rep Power: 14
et1ap2 is on a distinguished road
Hi,

I have the same problem as brashear. I tried to delete and re-create the link between setup cells of ANSYS and CFX, but the error still exists Do you have any other suggestions? Thanks in advance

Last edited by et1ap2; May 5, 2012 at 09:09.
et1ap2 is offline   Reply With Quote

Old   May 5, 2012, 11:49
Default
  #4
Member
 
sajad
Join Date: Nov 2010
Posts: 51
Rep Power: 16
sajad_abasi is on a distinguished road
hi
i had this problem too.but i saved it in this manner and closed workbench after that i open it again and it works right.
sometimes you should specify the file path yourself for the software

hope to help you
sajad_abasi is offline   Reply With Quote

Old   May 5, 2012, 23:17
Default
  #5
Senior Member
 
Gweher's Avatar
 
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20
Gweher will become famous soon enough
As Stumpy said it should work (always does for me).

If not I think you should try, >Project Directory\dp0\CFX\CFX, and use the ./ds in CFX so you have no issues when changing the project directory path.
Gweher is offline   Reply With Quote

Old   June 13, 2012, 06:15
Default
  #6
New Member
 
Wei Zhao
Join Date: Apr 2011
Posts: 9
Rep Power: 15
Alanseu is on a distinguished road
Actually it is the missing of FSIN_No# in defining the boundary of Interface of fluid and solid in CFX-re, which cause the ds.dat cannot been found or others.
Alanseu is offline   Reply With Quote

Old   November 25, 2012, 09:13
Default
  #7
New Member
 
Join Date: Nov 2012
Location: China
Posts: 3
Rep Power: 14
SteelMan is on a distinguished road
Send a message via Skype™ to SteelMan
I met the same problem. I copied the ds.dat into the target folder from an old project and it works. I checked the contents of the file(ds.dat )and it was updated according to new project.
SteelMan 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
Properly using symmetry with both CFX and ANSYS workbench for a FSI analysis, help! Cirion0000 CFX 0 July 6, 2009 15:26
FSI using Ansys LS-Dyna and CFX YY CFX 2 April 9, 2008 07:40
Ansys CFX 11 FSI and ICEM Sheeko CFX 3 November 16, 2006 07:42
MFX - for FSI between Ansys Multiphysics and CFX? Zerocles CFX 1 June 5, 2006 09:23
FSI using CFX and ANSYS Bi Chang CFX 2 May 10, 2005 05:47


All times are GMT -4. The time now is 10:01.