I'm trying to load velocity data from a file using the following code:
int maxcent = 1;
int a = 0;
int b = 0;
double velprof; /* make sure # faces <= 1000 */
fi2 = fopen("velprof4.txt", "r");
if (fi2 == NULL)
printf("*\nERROR - CANNOT OPEN THE FILE\n*");
printf("*\n File Opened. ID is %d\n", fi2);
while (a <= maxcent)
b = 0;
while (b <= 7)
fscanf(fi2, "%g", &tempvel);
velprof[a][b] = tempvel;
printf("%d %d %g\n", a, b, velprof[a][b]);
fclose(fi2); } /***********END**************/
The input file was created in a text editor and is: 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0; 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0;
The representative output from FLUENT for the velocity matrix is:
File Opened. ID is 18001056;
0 0 5.26354e-315
0 1 5.30499e-315
0 2 5.32571e-315
0 3 5.34643e-315
0 4 5.3568e-315
0 5 5.36716e-315
0 6 5.37752e-315
0 7 5.38788e-315
1 0 5.39306e-315
1 1 5.39824e-315
1 2 5.40342e-315
1 3 5.4086e-315
1 4 5.41378e-315
1 5 5.41896e-315
1 6 5.41896e-315
1 7 5.41896e-315
So the velocity values in the matrix are wrong. Any ideas?
Hi i had got the same problem and i soved it defining the variable as float and not double...try it and let me know
I got crazy with this fscanf....thanks Martelli, declaring the variable as float works!
Where do you use this code? I thought UDF needs DEFINE macro...
Hi, in a few words,
fscanf is a C function to scan a file for its content.
Macros are written in C language to communicate with fluent.
Inside macros you use C language, so you can use the fscanf function.
Thank you for your explanation, but in the code from above, there is no macro, that would communicate with fluent. I assume that part is left out, or is it possible to execute code as it is?
I was having the same problem. Changing variable from real or double to float worked perfectly.
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