[carteblanche]

Hi

I am trying to compile a UDF for CG motion using fluent 12.1. When I build the library file and try to load it, it shows me the error open_udf_library:system cannot find the file specified. I searched a lot regarding this issue and found out that this error is Visual Studio related. I have Visual Studio 2010 Ultimate installed and tried starting fluent from the command prompt by visual studio, but it still gives me the same error. I have also tried all the solutions previously mentioned in this forum, but that was for Fluent 6.3 and none of those works for 12.1. Is this some problem with the environment variables? Can someone help me regarding this?

thanks in advance
CB

[Amir]

Hi,
ensure you have linked FLUENT with VC++ by setting its environment, for checking that, it's better to compile and load another simple UDF.

[imankhozeymeh]

hello
I have the same problem, but how can I link fluent with VC++?
thanks

[Amir]

Originally Posted by imankhozeymeh

hello
I have the same problem, but how can I link fluent with VC++?
thanks

http://www.cfd-online.com/Forums/blo...fluent-vc.html

[imankhozeymeh]

Hi Amir

I copied the variables to the FLUENT folder..(not sure if you meant this)
I am using Visual studio 10 prof. and FLUENT 12.1.4
when i start Fluent , at UDF compiler setup I link it to Microsoft Visual Studio 10.0\VC\vcvarsall.bat
I did everything where suggest in the forum, but steel this error comes out.

Error: open_udf_library: The system cannot find the file specified.
Error Object: #f

Can you help me with this, thank you

[Amir]

Hi,

Originally Posted by imankhozeymeh

I copied the variables to the FLUENT folder..(not sure if you meant this)

you need to have FLUENT in your system path. execute "setenv.exe" which is in your FLUENT installation folder.

Originally Posted by imankhozeymeh

I am using Visual studio 10 prof. and FLUENT 12.1.4
when i start Fluent , at UDF compiler setup I link it to Microsoft Visual Studio 10.0\VC\vcvarsall.bat
I did everything where suggest in the forum, but steel this error comes out.

Error: open_udf_library: The system cannot find the file specified.
Error Object: #f

Ensure your UDF file name doesn't include any spaces.
If you cannot handle this instruction, there is another way but it's not permanent; First execute "setenv.exe" and then load FLUENT from VC++ command prompt.

Bests,

[Behnam Ghadimi]

Originally Posted by Amir

Hi,

you need to have FLUENT in your system path. execute "setenv.exe" which is in your FLUENT installation folder.

Ensure your UDF file name doesn't include any spaces.
If you cannot handle this instruction, there is another way but it's not permanent; First execute "setenv.exe" and then load FLUENT from VC++ command prompt.

Bests,

thanks a lot Amir,
i do what you said, it is work.

[lei]

Thanks Amir for your discussions.
I had the same problem, had just solved it using the method mentioned by Amir. I also would like to add some comments on the environment settings, because it also depends on the operating system you use (32/64 bit windows). So, if you are using win64, the path should be in the form of "Program Files (x86)...". For example, I use winXP64/Visual Studio 10/Fluent 12.1, and the variables in "start>My computer>Properties>Advanced>Environment Variables>System variables" are set to be:

INCLUDE=C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include;C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Include;

LIB =C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64;C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Lib\x64

Path=C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE;

Lei

[kulkarniketan.1985]

Hi
When I am trying to load my udf in Fluent it is says

(chdir "libudf")()
(chdir "win64\2DDP")()
# Generating ud_io1.h

And then it just doesn't do anything else.

Can you please advise why it is not creating libudf.dll after this step?