DPM ：dpm law index
 

hi,when I writing UDF's for the DPM law(inert heating law) to set particle temperature,it can be loaded in the Law option.
but when I creat countor with particle variable:particle law index,I got particle law index=8(no udf,heating law's particle law index=1),
what does "8" mean?


#include "udf.h"
#include "dpm.h"

//FLUENT 19.1
DEFINE_DPM_LAW(heat_law, tp, coupled)
{

InertHeatingLaw(tp);

if(TP_T(tp)<320.0)
{
TP_T(tp)=321;
}
}

finally，I understand what dose it mean.
you can find it in dpm_types.h file,dpm_laws_user1=8.