Where are the variable values in the file `cfupdateold.f` come from

MFiX
#1

Hi everyone,

cfupdateold.f is used to “update old arrays to store current time step information before the new arrays are updated”. But, where are the variable values— such as DES_POS_NEW(LL,:), DES_VEL_NEW(LL,:), and OMEGA_NEW(LL,:)—in the file cfupdateold.f come from?

     DES_POS_OLD(LL,:)  = DES_POS_NEW(LL,:)
     DES_VEL_OLD(LL,:)  = DES_VEL_NEW(LL,:)
     OMEGA_OLD(LL,:)    = OMEGA_NEW(LL,:)

Thanks

#2

It comes from discretelement, as can be found by searching the code (case-insensitive) for DES_POS_NEW and USE:

    des/cfupdateold.f:20:       USE discretelement, only: max_pip, des_pos_old, des_pos_new, des_vel_old, des_vel_new, omega_old, omega_new
    des/calc_epg_des.f:34:      use discretelement, only: DES_POS_NEW
#3