ANSYS/CFX, MFX, piezoelectric actuated micro-pump problem

gogohusky · January 28, 2011, 06:59

Dear all:

I am using 64-bit Ansys 12.1 and trying to repeat the Ansys example on MFX (coupled-field analysis guide 4.5, piezoelectric actuated micro-pump). I have followed the example exactly, but kept on having problem with the MFX launcher in ANSYS APDL.

After setting up the directory, input and definition files for ANSYS Run and CFX Run on the launcher, I have an error message of "The required cfx5solve.exe file was not found in the v121\CFX\bin subdirectory of the directory enter in the 'CFX installation directory' filed on the 'MFX-ANSYS/CFX Setup' tab, as is required".

I have made sure all the files and directories on the launcher are correct. It looks to me that the two parts of the program seem not talking to each other, but the starnge thing is both Ansys and CFX run perfectly individually. Does anyone know how to solve this?

Or is there any batch code that can avoid the launcher and get the MFX solution phase going, either through CFX or ANSYS? The Workbench approach seems to be very time consuming.

Thank you for your help!
Best regards,

Ryan

stumpy · January 31, 2011, 11:22

I would launch the job from the CFX Solver Manager instead. Assuming that in CFX-Pre the External Solver Coupling was set to ANSYS Multifield via Prep7, then in the CFX Solver Manager just pick the CFX .def file and it should start. I would run CFX outside of Workbench for this type of case.

singer1812 · February 2, 2011, 17:04

Submitting an FSI via the ANSYS side, you need to use the high level directory Ansys Inc location for CFX Installation directory.

On my computer it is

C:\Program Files\ANSYS Inc

If you specify a directory further down or the acutal directory that the solver is in, you get the error you got.

ebpaul · February 17, 2011, 12:49

Search for the exe file "cfx5solve.exe" and paste a copy of it in "v121\CFX\bin" directory. hope that should work.

mechy · June 27, 2012, 04:02

I have ANSYS14 and when I perform commands under the title "Set up the CFX Model and Create the CFX Definition File"
the bellow error is exist and it not allow to create Definition file

In Analysis 'Flow Analysis 1': Unit conversions will not be applied to data transferred between the solvers. To enable these conversions, select a pre-defined system of solution units for the ANSYS solver using the /UNITS command in the Input File.

please help me

ebpaul · June 27, 2012, 04:12

use "/UNITS SI" manually in the input file.
Regards
Paul

mechy · June 27, 2012, 09:19

Quote:

Originally Posted by ebpaul

use "/UNITS SI" manually in the input file.
Regards
Paul

Dear Paul
thanks so much for your answer
this command should be added in which input file ?
I added it in piezo.INP and insert this file in "external solver coupling -Mechanical input file " is it true ?

Best Regards

mechy · June 28, 2012, 01:24

Quote:

Originally Posted by stumpy

I would launch the job from the CFX Solver Manager instead. Assuming that in CFX-Pre the External Solver Coupling was set to ANSYS Multifield via Prep7, then in the CFX Solver Manager just pick the CFX .def file and it should start. I would run CFX outside of Workbench for this type of case.

I have ANSYS14 and when I perform commands under the title "Set up the CFX Model and Create the CFX Definition File"
the bellow error is exist and it not allow to create Definition file

In Analysis 'Flow Analysis 1': Unit conversions will not be applied to data transferred between the solvers. To enable these conversions, select a pre-defined system of solution units for the ANSYS solver using the /UNITS command in the Input File.

please help me

MalishBob · May 19, 2014, 04:26

Hi, Mechy! I have the same error as you. Do you understand what the problem was? Can you help me? Thanks!

ee13s077 · November 15, 2014, 02:37

I am also facing same problem.Please suggest me how to resolve the error of cfx installation directory in mfx ansys cfx set up tab.

January 28, 2011, 06:59	ANSYS/CFX, MFX, piezoelectric actuated micro-pump problem	#1
gogohusky New Member Join Date: Jan 2011 Posts: 13 Rep Power: 15	Dear all: I am using 64-bit Ansys 12.1 and trying to repeat the Ansys example on MFX (coupled-field analysis guide 4.5, piezoelectric actuated micro-pump). I have followed the example exactly, but kept on having problem with the MFX launcher in ANSYS APDL. After setting up the directory, input and definition files for ANSYS Run and CFX Run on the launcher, I have an error message of "The required cfx5solve.exe file was not found in the v121\CFX\bin subdirectory of the directory enter in the 'CFX installation directory' filed on the 'MFX-ANSYS/CFX Setup' tab, as is required". I have made sure all the files and directories on the launcher are correct. It looks to me that the two parts of the program seem not talking to each other, but the starnge thing is both Ansys and CFX run perfectly individually. Does anyone know how to solve this? Or is there any batch code that can avoid the launcher and get the MFX solution phase going, either through CFX or ANSYS? The Workbench approach seems to be very time consuming. Thank you for your help! Best regards, Ryan

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January 31, 2011, 11:22		#2
stumpy Senior Member Join Date: Apr 2009 Posts: 531 Rep Power: 21	I would launch the job from the CFX Solver Manager instead. Assuming that in CFX-Pre the External Solver Coupling was set to ANSYS Multifield via Prep7, then in the CFX Solver Manager just pick the CFX .def file and it should start. I would run CFX outside of Workbench for this type of case.

February 2, 2011, 17:04		#3
singer1812 Senior Member Edmund Singer P.E. Join Date: Aug 2010 Location: Minneapolis, MN Posts: 511 Rep Power: 20	Submitting an FSI via the ANSYS side, you need to use the high level directory Ansys Inc location for CFX Installation directory. On my computer it is C:\Program Files\ANSYS Inc If you specify a directory further down or the acutal directory that the solver is in, you get the error you got.

February 17, 2011, 12:49		#4
ebpaul New Member Paul Join Date: Mar 2009 Posts: 3 Rep Power: 17	Search for the exe file "cfx5solve.exe" and paste a copy of it in "v121\CFX\bin" directory. hope that should work.

June 27, 2012, 04:02		#5
mechy Senior Member Join Date: Jun 2011 Posts: 163 Rep Power: 14	I have ANSYS14 and when I perform commands under the title "Set up the CFX Model and Create the CFX Definition File" the bellow error is exist and it not allow to create Definition file In Analysis 'Flow Analysis 1': Unit conversions will not be applied to data transferred between the solvers. To enable these conversions, select a pre-defined system of solution units for the ANSYS solver using the /UNITS command in the Input File. please help me

June 27, 2012, 04:12		#6
ebpaul New Member Paul Join Date: Mar 2009 Posts: 3 Rep Power: 17	use "/UNITS SI" manually in the input file. Regards Paul

May 19, 2014, 04:26		#9
MalishBob New Member Azad Join Date: May 2014 Posts: 1 Rep Power: 0	Hi, Mechy! I have the same error as you. Do you understand what the problem was? Can you help me? Thanks!

November 15, 2014, 02:37		#10
ee13s077 New Member shelly aggarwal Join Date: Nov 2014 Posts: 1 Rep Power: 0	I am also facing same problem.Please suggest me how to resolve the error of cfx installation directory in mfx ansys cfx set up tab.