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Access Violation when using F_C0 and F_C1

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Old   November 15, 2012, 01:08
Default Access Violation when using F_C0 and F_C1
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Join Date: Nov 2012
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I am trying to find the cell index of a neighboring cell and found the macros F_C0 and F_C1 that look like they would work for me. However, when I try to run the code I get an Access Violation in Fluent. I read through the user manual and believe I am doing it correctly. The code is as follows:

#include "udf.h"
#include "metric.h"
#include "stdio.h"
#include "math.h"
#include "stdlib.h"
float mass_load[3000];
float mass_load_new[3000];
Domain *dz;
Thread *t;
Thread *t0;
Thread *t1;
Thread *tz;
Thread *tf;
cell_t c, ca, cb, cz;
face_t f;
int j, k;
DEFINE_INIT(cell_init, d)
double inlet_ml; inlet_ml = .01; j=0; thread_loop_c(t,d) {
begin_c_loop(c,t) {
mass_load[j] = inlet_ml; j++;
} end_c_loop(c,t)
}   DEFINE_ADJUST(get_data4, d) {
real vel[2]; real A[2]; real next_centr[2]; double av_prod, cell_ml; double mass_load_sum, mass_out_sum; int i; dz = Get_Domain(1); j=0; thread_loop_c(t,d) {
begin_c_loop(c,t) {
mass_load_sum = 0; mass_out_sum = 0; for(i=0; i<4; i++) { f = C_FACE(c,t,i); tf = C_FACE_THREAD(c,t,i); t0 = THREAD_T0(tf); t1 = THREAD_T1(tf); ca = F_C0(f,tf); cb = F_C1(f,tf); if(c1 != NULL) {
vel[0] = ((C_U(c0,t0) + C_U(c1,t1))/2); vel[1] = ((C_V(c0,t0) + C_V(c1,t1))/2);
} else {
vel[0] = 0; vel[1] = 0;
} F_AREA(A,f,tf); av_prod = NV_DOT(vel, A); if(av_prod < 0) {
C_CENTROID(next_centr, c1, t1); k = 0; thread_loop_c(tz,dz) {
begin_c_loop(cz,tz) {
if(cz == c) {
cell_ml = mass_load[k];
k++; } end_c_loop(cz,tz)
} mass_load_sum += cell_ml * fabs(av_prod);
} else {
mass_out_sum += fabs(av_prod);
} } mass_load_new[j] = mass_load_sum/mass_out_sum; j++;
} end_c_loop(c,t)
} j=0; thread_loop_c(t,d) {
begin_c_loop(c,t) {
mass_load[j] = mass_load_new[j]; j++;
} end_c_loop(c,t)
The code compiles fine but when I try to run it I get the error. As soon as I get rid of the F_C0 and F_C1 lines the code runs fine so it would seem that's where the problem is. Is there anything wrong with how I'm using those macros or is there anything else I can try? Thanks for your help.
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