[p52sarup]

Is it possible to use two different UDFs in the same study?

I want using a UDF to inlet and other UDF in outlet.

If possible, they could tell me what procedure to follow?

thank

[rewol]

It is possible. Just place two UDF codes inside a single file and compile.

[p52sarup]

Is this way? two define_profile?

#include "udf.h"

DEFINE_PROFILE(unsteady_pressure, thread, position)
{
face_t f;
real t = CURRENT_TIME;

begin_f_loop(f, thread)
{
F_PROFILE(f, thread, position)= 103300 + 500*t;
}
end_f_loop(f, thread)
}



DEFINE_PROFILE(tm_pout2, t, nv)
{
face_t f ;

real flow_time = RP_Get_Real("flow-time");

if (flow_time < 5 )
{
printf("Time = %f sec. \n",flow_time);
printf("Targeted mass-flow rate set at 0.01 kg/s \n");

begin_f_loop(f,t)
{
F_PROFILE(f,t,nv) = 0.01 ;
}
end_f_loop(f,t)
}
else
{
printf("Time = %f sec. \n",flow_time);
printf("Targeted mass-flow rate set at 0.5 kg/s \n") ;


begin_f_loop(f,t)
{
F_PROFILE(f,t,nv) = 0.5 ;
}
end_f_loop(f,t)
}

UDF/compiled/sources files/add..... and push build

finally push LOAD

is this correct?

i have a problem:

Opening library "C:\Users\p52sa\Desktop\Ansys\prueba1_files\dp0\FL U-9\Fluent\libudf"...RPC RCX_SC_SET_ERR_MSG failed: RPC: Can't encode arguments

Warning: C:/Users/p52sa/Desktop/Ansys/prueba1_files/dp0/flujo variable a los 5 seg.c(10): unknown escape: "\ ".
Warning: C:/Users/p52sa/Desktop/Ansys/prueba1_files/dp0/flujo variable a los 5 seg.c(11): unknown escape: "\ ".

Error at host: The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64).

The system can not find the specified file.

C:\Users\p52sa\Desktop\Ansys\prueba1_files\dp0\FLU-9\Fluent\libudf\win64\3ddp_host\libudf.dll

Error at Node 0: The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64).

The system can not find the specified file.

Warning: C:/Users/p52sa/AppData/Local/Temp/flujo variable a los 5 seg.c.10932.1.c(10): unknown escape: "\ ".
Warning: C:/Users/p52sa/AppData/Local/Temp/flujo variable a los 5 seg.c.10932.1.c(11): unknown escape: "\ ".

C:\Users\p52sa\Desktop\Ansys\prueba1_files\dp0\FLU-9\Fluent\libudf\win64\3ddp_node\libudf.dll
Error at Node 1: The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64).

The system can not find the specified file.

C:\Users\p52sa\Desktop\Ansys\prueba1_files\dp0\FLU-9\Fluent\libudf\win64\3ddp_node\libudf.dll

Error: The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64).\n\nEl sistema no puede encontrar el archivo especificado.
\n\nC:\Users\p52sa\Desktop\Ansys\prueba1_files\dp0 \FLU-9\Fluent\libudf\win64\3ddp_host\libudf.dll
Error Object: #f

[rewol]

I did not check your coding but yes, that is the logic. Although you have to choose them once you open the interface.

As for your problem, you have a problem regarding the compilation for which the solution is provided in other sections in detail, you should check it. When i have to use UDF, i always start fluent from command prompt and compile, not from the workbench file. You should have visual studio installed on your PC with cross platform extension, i think.

Good luck.

[p52sarup]

Ok thank.

I am using interpreted in this moment.

What is the difference?

[blackmask]

Please do not use any space in your directory/file naming. Sometimes it leads to annoying errors. Not all functions are available in interpreted UDF, some are only available for compiled UDF. If you do not encounter any error interpreting your UDF source file, it will be fine to use it.

[p52sarup]

At first, when I interpret, ansys does not show any error. The problem is that the system, when push "build", does not create the libudf.dll file. As I said ... it is possible that by not having visual studio problems arise. although I think it should not matter since in the end it's just a .c file.
I dont know, I suprime the space but the problem continúe.
Thank