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-   -   error in two way fsi (https://www.cfd-online.com/Forums/cfx/87930-error-two-way-fsi.html)

kmgraju May 3, 2011 04:58
error in two way fsi
 
Dear all

I am doing two way fsi problem.

during my CFX pre setup I found this type of error.Please rectify the problem


"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"."

Regards
Govind

Lance May 3, 2011 09:06
Your solid model is either
1) missing, or
2) does not contain any FSI interfaces.

stumpy May 3, 2011 09:31
CFX-Pre sometimes gives this error for no apparent reason. Assuming the ds.dat file is there and it contain an interface, then delete the link between the two Setup cells in Workbench and re-create it.

James113 May 4, 2011 14:03
You should reset the CFX-solver.
 
You should reset the CFX-solver.

kmgraju May 5, 2011 03:24
error
 
1 Attachment(s)
sorry for my late reply.
I am working on two way FSI inside the artery. The blood that I have taken as a Non Newtonian . I use my inlet velocity as a sinusoidal nature. outlet set to 0 Pa.

But in the cfx post I did n't get proper result and simulation please help me.
I could not find streamline path and pressure contour .
Please help me

Thanks in advance

Regards
kmgraju

solomedic May 12, 2011 03:45
help on fsi
 
Quote:
Originally Posted by kmgraju (Post 306056)
Dear all

I am doing two way fsi problem.

during my CFX pre setup I found this type of error.Please rectify the problem


"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"."

Regards
Govind
sir I am doing fsi of a wing and I am trying to do it for agard 445.6 wing,because this wing is used as benchmark in fsi because experimental results are available. Can you please help fro where I can find the geometry of that wing? please help me if you can?

hesamking September 19, 2012 16:30
Quote:
Originally Posted by stumpy (Post 306093)
CFX-Pre sometimes gives this error for no apparent reason. Assuming the ds.dat file is there and it contain an interface, then delete the link between the two Setup cells in Workbench and re-create it.
Thanks
It worked for me.


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