[cwl6750084]

I am trying to run DPM with the following UDF (basically to print the location of the trapped particles, cell surface area and mass flow).

#include "udf.h"
#include "dpm.h"
#include "mem.h"
#include "sg.h"
#include "stdlib.h"
#include "stdio.h"
#include "math.h"

DEFINE_DPM_OUTPUT(discrete_phase_sample,header,fp, p,t,plane)
{
face_t f;
real NV_VEC (A);
real amag;

F_AREA(A,f,t);
amag=NV_MAG(A);

char fileDep[] = "Deposit_Flux.txt";
fp=fopen(fileDep,"a");

fprintf(fp,"%i %f %f %f %e %e \n",
p->part_id,P_POS(p)[0],P_POS(p)[1],P_POS(p)[2],amag,P_FLOW_RATE(p));
fclose(fp);

}

However, I keep getting the following error:


================================================== ============================
Stack backtrace generated for process id 22348 on signal 1 :
1000000: /panfs/vol/opt/ansys/v145/fluent/fluent14.5.7/lnamd64/3ddp/fluent.14.5.7() [0x18d6804]
1000000: /panfs/vol/opt/ansys/v145/fluent/fluent14.5.7/lnamd64/3ddp/fluent.14.5.7() [0x18d6f73]
1000000: /lib64/libpthread.so.0(+0xf4a0) [0x2af470ceb4a0]
1000000: /panfs/vol/w/wacheng72/Discrete-Phase/Impinge-Array/P1015-1-T300/libudf/lnamd64/3ddp/libudf.so(discrete_phase_sample+0x75) [0x2af4b98e3881]
Check the file fluenterror.log for details.
Please include this information with any bug report you file on this issue!
================================================== ============================


Error: fluent.14.5.7 received a fatal signal (SEGMENTATION VIOLATION).
Error Object: #f



My suspect is that F_AREA(A,f,t) was not properly executed - there is a message upon compilation that f is used in the line uninitialized.

I wonder if anyone will have any ideas on how to solve the problem?

Thanks.