A strange mistake
 

I met the mistake recently.http://www.cfd-online.com/Forums/C:\...9;误.bmp
This case went well under windows, but always go wrong under linux.

This is my UDF.
include <udf.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <math.h>
#define particle_diameter 1e-05
#define max 100
int count_bottom_num;
int kh1;
int kh2;
int coalesce_num;
int collision_num;
int random;
int count_0,count_1;
int i;
real distance_0,distance_1;
real distance_2,distance_3;
real dis[3];
DEFINE_ON_DEMAND(initial)
{
count_bottom_num=0;
kh1=0;
kh2=0;
coalesce_num=0;
collision_num=0;
for(i=0;i<ND_ND;i++)
{
dis[i]=0.0;
}
count_1=0;
}
DEFINE_DPM_SPRAY_COLLIDE(random_spray_collide,tp,p )
{
/* get the cell and Thread that the particle is currently in */
cell_t c = RP_CELL(&(tp->cCell));
Thread *t = RP_THREAD(&(tp->cCell));
Particle *pi;
/*count particle number in the cell */
count_0=0;
random=0;
begin_particle_cell_loop(pi,c,t)
{
count_0 = count_0+1;
}
end_particle_cell_loop(pi,c,t);
//Message("\n particle number in the cell is: %d\n",num);

if(P_DIAM(tp)<=(1.01*particle_diameter) && P_DIAM(tp)>=(0.99*particle_diameter))
{
distance_0=pow(dis[0]-P_POS(tp)[0],2)+pow(dis[1]-P_POS(tp)[1],2)+pow(dis[2]-P_POS(tp)[2],2);
distance_1=sqrt(distance_0);
if(distance_1>=(0.99*particle_diameter) && count_1!=0)
{
for(i=0;i<ND_ND;i++)
{
dis[i]=P_POS(tp)[i];
}
begin_particle_cell_loop(pi,c,t)
{
if(P_DIAM(pi)<=(1.01*particle_diameter) && P_DIAM(pi)>=(0.99*particle_diameter))
{
distance_2=pow(P_POS(pi)[0]-P_POS(tp)[0],2)+pow(P_POS(pi)[1]-P_POS(tp)[1],2)+pow(P_POS(pi)[2]-P_POS(tp)[2],2);
distance_3=sqrt(distance_2);
//Message("\n distance_1=%e \n",distance_1);
if(distance_3<=(1.01*particle_diameter) && distance_3>=(0.99*particle_diameter))
{
/* define random number */
srand((unsigned)time(NULL));
random=rand()%max;
/* define particle random coalesce */
if(random<20)
{
coalesce_num = coalesce_num+1;
for(i=0;i<ND_ND;i++)
{
P_VEL(tp)[i]=0.5*(P_VEL(tp)[i]+P_VEL(pi)[i]);
}
P_MASS(tp)=2*P_MASS(tp);
P_DIAM(tp)=pow(2,0.3333)*P_DIAM(tp);
P_MASS(pi)=P_MASS(pi)/100000;
P_DIAM(pi)=P_DIAM(pi)/100000;
return PATH_ACTIVE;
Message("\n coalesce_num is:%d \n",coalesce_num);
Message("\n P_MASS=%e ,P_DIAM=%e \n",P_MASS(tp),P_DIAM(tp));
}
else if(random>=20)
{
collision_num=collision_num+1;
Message("\n totle_collision_num=%d \n",collision_num);
}
}
}
}
end_particle_cell_loop(pi,c,t);
}
}
count_1=count_1+1;
}


I would appreciate it very much if anyone can correct this mistake for me.

Before using the source file on Linux have you tried to convert the end of line characters to Unix format ? If your C file is named my_file.c do this in a terminal:

dos2unix my_file.c

Try again with the file after this transformation.

Do