[ramchander]

hi,
i have a C file and want to change into udf file,so that i want to use it in fluent .please give some suggestions how to change it.

C file:

#include<stdio.h>
#include<conio.h>
int main()
{
int x=0,temp=0,t;
printf("enter t value");
scanf("%d",t);
if(t>=90 && t<=180);
{
x=t-90;
temp=1533-x*7;
printf("temperature %d",temp);
}
else
{
printf("tempearture you given not satisfy %d",temp);
}
getch();
}

[ghost82]

Be more specific; is it to apply as a profile?
your program requests input values given by user..
What is t?time, space??

[ramchander]

"t" represents angle
as the t value changing from 90 to 180, temperature varies as mathematical form like (1533-x*7),
when t=90 then x=0,
when t=91 then x=1, and so on.......
here as the t (angle) changes from 90 to 180 the temperature decreases from 1533 to 903.

[ghost82]

post a picture of your domain with sizes, describe your case problem and if you want to use the udf as a boundary condition.

[reformat]

If your question is how you can convert the c file into udf for fluent, you can either interpret or compiled it. For me, i personally prefer the latter.

Go to Define-->Function-->Compiled
Add the c file into the box on the left, highlight it and click "build".
A list of information will start loading at the bottom screen of your mesh.
Look out for words with "error" or "warning", there are lines stated where the error occurs. Do correct them and "build" the c file again. Once all the errors have been cleared, load the ::libudf file