[ameetks99]

Please can someone help me to write a UDF for compiled for fluid inlet velocity in recipricating pump which is rotating at 1450 rpm and total displacement of piston is 20 mm.
Diameter of piston is 14 mm.
when I used
#include "udf.h"
DEFINE_PROFILE(unsteady_velocity, thread, position)
{
face_t f;
real t = CURRENT_TIME;
begin_f_loop(f, thread)
{
F_PROFILE(f, thread, position) =2.61*sin(152*t);
}
end_f_loop(f, thread)
and compiled it then an error is found "the system cannot find the file specified"

[mprinkey]

You are missing a closing } on the DEFINE_PROFILE.

[ameetks99]

thank you for reply but the problem is Not resolved

[pakk]

I think there if more info showing on your screen that you don't show.
Give more info on the error. (At least the line above it and the line below it.)

[ameetks99]

The UDF library you are trying to load (C:\Users\Ameet Kumar Singh\Desktop\final\final pump_files\dp0\FFF\Fluent\libudf) is not compiled for 3d on the current platform (win64).
The system cannot find the file specified.

C:\Users\Ameet Kumar Singh\Desktop\final\final pump_files\dp0\FFF\Fluent\C:\Users\Ameet Kumar Singh\Desktop\final\final pump_files\dp0\FFF\Fluent\libudf\win64\3d\libudf.d ll
This message is showing When I load the compiled udf

[pakk]

Take a look at the error:

The UDF library you are trying to load (...) is not compiled

So this is the error when you try to load the UDF.
The problem occured earlier: when you tried to compile (build) the UDF.

The problem could be that you have spaces in your folder, Fluent has problems with this. Move it to a place without spaces.

If this does not solve it, show the error that you get when you compile.

[ameetks99]

Same error
The UDF library you are trying to load (D:\final\final_files\dp0\FFF\Fluent\libudf) is not compiled for 3d on the current platform (win64).
The system cannot find the file specified.

D:\final\final_files\dp0\FFF\Fluent\D:\final\final _files\dp0\FFF\Fluent\libudf\win64\3d\libudf.dll

[pakk]

"If this does not solve it, show the error that you get when you compile."

[KevinZ09]

I've read about these errors quite frequently. Have you had a look in the following thread:

UDF - Error loading libudf

There's even some extra documentation in the form of a .pdf-file in there that could help. Did you compile the code yourself? You have to make sure the compiled library matches your 3D solver and 64-bits OS.

[ameetks99]

I used
#include "udf.h"
DEFINE_PROFILE(unsteady_velocity, thread, position)
{
face_t f;
real t = CURRENT_TIME;
begin_f_loop(f, thread)
{
F_PROFILE(f, thread, position) =2.61*sin(152*t);
}
end_f_loop(f, thread)
and error showing is
The UDF library you are trying to load (D:\final\final_files\dp0\FFF\Fluent\libudf) is not compiled for 3d on the current platform (win64).
The system cannot find the file specified.

D:\final\final_files\dp0\FFF\Fluent\D:\final\final _files\dp0\FFF\Fluent\libudf\win64\3d\libudf.dll

[pakk]

You are still showing the error that you get when you click 'load'. The error is even saying that: "The UDF library you are trying to load ..."

At the moment you click 'build', some text is shown in the text user interface in Fluent. What is that text?