CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   fsi problem (http://www.cfd-online.com/Forums/cfx/80442-fsi-problem.html)

mohfah2002 September 26, 2010 12:15

fsi problem
 
hi
i am trying to model a sloshing of liquid in rectangular tank, i am using workbench 12.1. i make every step to model my case but when the run begain the folowwing error appear

CONTAC171 through CONTAC177 elements with KEYOP(2)=2 are invalid
elements for the Multifield Solver.
2nd sync. point: Get interface mesh

pls tell me who i solve this error
thanks

stumpy September 27, 2010 09:33

Are the tank walls/baffles felxible? If not, there's no need to couple to Mechanical, just us moving mesh to move the whole mesh back and fourth in CFX.
The error message above is simple enough. You can't use those elements with FSI.

mohfah2002 September 27, 2010 18:42

Quote:

Originally Posted by stumpy (Post 276787)
Are the tank walls/baffles felxible? If not, there's no need to couple to Mechanical, just us moving mesh to move the whole mesh back and fourth in CFX.
The error message above is simple enough. You can't use those elements with FSI.

yes the tank walls flexible. i ask about how solve the error or how i can change the contact elements in workbench 12.1.

stumpy September 28, 2010 11:44

Workbench creates those elements in various different cases - springs, if you have a rigid body, remote displacements,...
So you need to figure out what feature in your case is using those elements, then find a different way to implement that feature.

Liuyanming October 11, 2011 23:57

Quote:

Originally Posted by mohfah2002 (Post 276678)
hi
i am trying to model a sloshing of liquid in rectangular tank, i am using workbench 12.1. i make every step to model my case but when the run begain the folowwing error appear

CONTAC171 through CONTAC177 elements with KEYOP(2)=2 are invalid
elements for the Multifield Solver.
2nd sync. point: Get interface mesh

pls tell me who i solve this error
thanks

hi, I have had the same problem .Do you solve it?


All times are GMT -4. The time now is 01:00.