[Djphx]

Hi,
I am trying to simulate the Vortex induced vibrations of a cylinder.
Geometry- 2d geometry with a rectangular domain and a circular cylinder wall.
The UDF i am trying to insert:
#include "udf.h"
DEFINE_SDOF_PROPERTIES(sdof_props, prop, dt, time, dtime)
{
real cg;
real k = 1*1.26*1.26;
cg = DT_CG(dt)[1];
prop[SDOF_MASS] = 1;
prop[SDOF_LOAD_F_Y] = -k*cg;
prop[SDOF_ZERO_TRANS_X] = TRUE;
prop[SDOF_ZERO_ROT_X] = TRUE;
prop[SDOF_ZERO_ROT_Y] = TRUE;
}
1. i tried to compile the UDF. The libudf folder was built but is unable to load the file. Error message: libudf.dl file not present.
2. Tried to interpret, error message being displayed: Line 6 structure reference not implemented.
I am new to CFD. I will be thankful for any kind of help.
Thanks

[cshsgy]

Hi Djphx,
I am not quite sure what the problem would be like. But sometimes if you use the ANSYS workbench, the compilation of the udf would be problematic. You may need to write to a standalone case file first and then try to compile... Hope this helps.

[Djphx]

Fluent is unable to build the necessary files when trying to compile.
Following message being printed in console:

(chdir "libudf")(chdir "win64\2ddp")'nmake' is not recognized as an internal or external command,
operable program or batch file.

Done.


I tried installing the visual studio and running it again (as per the tutorials) but still the problem persists. I am using standalone fluent for the above.

Please help.
Thanks in advance.

[cshsgy]

Hi Djphx,
I think the installation might not be proper.
This website provides some information.
https://www.cfd-online.com/Wiki/Flue...at_is_wrong.3F

[AlexanderZ]

Originally Posted by Djphx

Fluent is unable to build the necessary files when trying to compile.
Following message being printed in console:

(chdir "libudf")(chdir "win64\2ddp")'nmake' is not recognized as an internal or external command,
operable program or batch file.

Done.


I tried installing the visual studio and running it again (as per the tutorials) but still the problem persists. I am using standalone fluent for the above.

Please help.
Thanks in advance.

Compile Fluent UDF with Windows 10

best regards