[potatoning]

I use the DEFINE_DPM_INIT macro to define the initial flow rate of particles, and use DEFINE_DPM_BC macro and global variables to get the information of outlet particles, such as particle no. and total mass.
the question is, when I set the P_FLOW_RATE(p) larger than 1, it shows the total mass of particles is 0, but the particle no. is as usual.
I check the velocity of particles in particle tracks, and find out that the initial velocity(3m at first) of some particles is larger than 5000.
how can I solve it?
thanks a lot.

the simplification program as following:
#include "udf.h"
#include "dpm.h"
#include "global.h"

static int PN=0;
static int pn=0;
static double PMASS=0.;
static double pmass=0.;
DEFINE_DPM_BC(test1, p,t,f,f_normal,dim)
{
int i=0;
PN++;
pn=PN;
PMASS+=P_FLOW_RATE(p)
pmass=PMASS;
return PATH_ABORT;
}
DEFINE_DPM_INIT(test2,I)
{
Particle *p;
loop(p,I->p)
{
P_VEL(0)=0;
P_VEL(1)=0;
P_VEL(2)=-3;
P_DIAM(p)=0.01;
P_T(p)=300;
P_FLOW_RATE(p)=2;
}
}
DEFINE_ADJUST(time,domain)
{
PN=0;
PMASS=0;
}

[`e`]

The format of the particle velocity macro is P_VEL(p)[i] where p is the pointer to the tracked particle and i is the position (i = 0 for x etc). It's good practice to include trailing periods on numbers intended as real numbers (otherwise they may or may not be implicitly cast from an integer).

[potatoning]

Originally Posted by `e`

The format of the particle velocity macro is P_VEL(p)[i] where p is the pointer to the tracked particle and i is the position (i = 0 for x etc). It's good practice to include trailing periods on numbers intended as real numbers (otherwise they may or may not be implicitly cast from an integer).

that's my mistake. in the program, it is P_VEL(p)[i].