[Kestas]

Hello,
I am learning using Ansys Fluent 14, tried to interpret UDF example, but I got error:

cpp -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/src" -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/cortex/src" -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/client/src" -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/multiport/src" -I. -DUDF
ONFIG_H="<udfconfig.h>" "D:\CFDprojektai\pirmas_files\dp0\FFF\Fluent\udfexample.c"
Error: D:\CFDprojektai\pirmas_files\dp0\FFF\Fluent\udfexample.c: line 8: parse error.

while trying interpret:

/***********************************************************************
   udfexample.c 
  UDF for specifying steady-state velocity profile boundary condition
 ************************************************************************/

#include "udf.h"

DEFINE_PROFILE(inlet_x_velocity, thread, position)
{
    real x[ND_ND]; /* this will hold the position vector */
    real y, h;
    face_t f;
    h = 0.016; /* inlet height in m */
    begin_f_loop(f,thread)
    {
      F_CENTROID(x, f, thread);
      y = 2.*(x[1]-0.5*h)/h; /* non-dimensional y coordinate */
      F_PROFILE(f, thread, position) = 0.1*(1.0-y*y);
    }
    end_f_loop(f, thread)
   }

tried so much but error remains, maybe you can see error ?

Thank you,
Kestas

[eng_s_sadeghi]

Hi.
I have checked your file. It is correct. Your UDF file may not be in the same folder as your case file.

[Kestas]

UDF is in same directory where is case files(..\dp0\FFF\Fluent\). I also noticed that if I changed #include "udf.h" on first line, to random, say, "udfasdasdasd.h", I got same error on line 8, not on line 1, isn't strange?

[eng_s_sadeghi]

Really I have tried again, still no error
I should connect your computer using teamviewer software to see the problem.
Please email me for more questions.

[mactech001]

Hi Saeed,

what is a teamviewer software please?

regards,
mactech001

[eng_s_sadeghi]

Originally Posted by mactech001

Hi Saeed,

what is a teamviewer software please?

regards,
mactech001

It is for connecting to others computer and helping them soling their problems. Like Remote Desktop but much efficient.

[CMA]

I am getting the same error; were you able to finally solve the parse error problem?

Originally Posted by Kestas

Hello,
I am learning using Ansys Fluent 14, tried to interpret UDF example, but I got error:

cpp -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/src" -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/cortex/src" -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/client/src" -I"C:\PROGRA~1\ANSYSI~1\v140\fluent\fluent14.0.0/multiport/src" -I. -DUDF
ONFIG_H="<udfconfig.h>" "D:\CFDprojektai\pirmas_files\dp0\FFF\Fluent\udfexample.c"
Error: D:\CFDprojektai\pirmas_files\dp0\FFF\Fluent\udfexample.c: line 8: parse error.

while trying interpret:

/***********************************************************************
   udfexample.c 
  UDF for specifying steady-state velocity profile boundary condition
 ************************************************************************/

#include "udf.h"

DEFINE_PROFILE(inlet_x_velocity, thread, position)
{
    real x[ND_ND]; /* this will hold the position vector */
    real y, h;
    face_t f;
    h = 0.016; /* inlet height in m */
    begin_f_loop(f,thread)
    {
      F_CENTROID(x, f, thread);
      y = 2.*(x[1]-0.5*h)/h; /* non-dimensional y coordinate */
      F_PROFILE(f, thread, position) = 0.1*(1.0-y*y);
    }
    end_f_loop(f, thread)
   }

tried so much but error remains, maybe you can see error ?

Thank you,
Kestas

[msaeedsadeghi]

No error. It may have some hidden characters in it that cause error.
Have you copied the UDF from Fluent Help? If yes, there are so much hidden characters in your file that won't allow to be interpretted correctly. Find and delete them.

[mactech001]

when copying from Help to a notebook/text file, some characters are not recognised by Compiler. so, as Saeed suggests, just delete all the 'spaces' in the text.
reapply the 'ENTER' to make the next line again also.
also first make sure your Compiler is working using simple codings.

[hooman.4028]

Hi guys,

I have a question, I am trying to move my whole domain in a sinusoidal way. Basically I have a box which is fixed and i am trying to move the whole flow around in a sinusoidal transient way. Which kind of UDF would you suggest me to use?

Thanks for your help

[hooman.4028]

Any comments? I need to hear from you experts...