[amscosta]

Hi All,
I want to trap particles at wall based on a given particle diameter.
How can I modify DPM_BC macro below for acquiring that :





DEFINE_DPM_BC(bc_trap,tp,t,f,f_normal,dim)
{
if (your condition)
{
if(TP_TYPE(tp) == DPM_TYPE_INERT)
{
tp->gvtp.n_trapped += 1;
tp->gvtp.n_escaped -=1 ;
return PATH_END ;
}
Trap_Particle (tp);
}
else
{
Your_rebound_function(tp);
return PATH_ACTIVE;
}
}


Note : the snippet above is from a solution provided somewhere else. I believe

the line "if (your condition)" is the solution, but I have no idea how to specify "your condition" properly, for instance, how to refer to a particle diameter in the dpm udf language.


Any comment from the skilled users is very welcome.