{"id":317910,"date":"2023-11-16T03:45:43","date_gmt":"2023-11-16T03:45:43","guid":{"rendered":"\/forum\/forums\/topic\/define_dpm_scalar_update\/"},"modified":"2023-11-22T12:37:25","modified_gmt":"2023-11-22T12:37:25","slug":"define_dpm_scalar_update","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/define_dpm_scalar_update\/","title":{"rendered":"Define_DPM_scalar_update"},"content":{"rendered":"

I use this code to calculate stokes number.<\/p>\n

settings:<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

reporting User Value 0. (I suppose this is the stokes number I get. but I don’t know why its name is this one)<\/p>\n

it works in the case EBU example from FLUENT.<\/p>\n

but for my case with 2 million mesh and 40 million particle parcels, it crashed.<\/p>\n

<\/p>\n

I can’t post all the code here. the code is correct. so what setting should I change?<\/p>\n

#include “udf.h”
#include “dpm.h”<\/p>\n

DEFINE_DPM_SCALAR_UPDATE(StokesNumber,c,t,init,p)
{
    cphase_state_t *cp;
    cp = p->cphase;
    \/* cphase_state_t *c = &(p->cphase); *\/<\/p>\n

   ……<\/p>\n

 <\/p>\n

    \/* Stokes Number *\/
    P_USER_REAL(p,0) = tau_p \/ tau_f;<\/p>\n

}<\/p>\n","protected":false},"template":"","class_list":["post-317910","topic","type-topic","status-closed","hentry","topic-tag-coal-particle-combustion-1","topic-tag-dpm"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t