error in two way fsi

kmgraju · May 3, 2011, 04:58

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.

kmgraju · May 5, 2011, 03:24

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

Quote:

Originally Posted by kmgraju

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

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.

May 3, 2011, 04:58	error in two way fsi	#1
kmgraju Senior Member Govindaraju Join Date: Apr 2010 Posts: 209 Rep Power: 17	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

May 4, 2011, 14:03	You should reset the CFX-solver.	#4
James113 New Member James Join Date: Apr 2011 Posts: 13 Rep Power: 14	You should reset the CFX-solver.

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May 3, 2011, 09:06		#2
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	Your solid model is either 1) missing, or 2) does not contain any FSI interfaces.

May 3, 2011, 09:31		#3
stumpy Senior Member Join Date: Apr 2009 Posts: 531 Rep Power: 21	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.