@Article{fdmp.2019.07762,
AUTHOR = {Pengxiao Chen, Kai Huang, Fenghe Wang, Weijun Xie, Shuo Wei, Deyong Yang},
TITLE = {Simulation of Heat and Mass Transfer in a Grain Pile on the Basis of a 2D Irregular Pore Network},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {15},
YEAR = {2019},
NUMBER = {4},
PAGES = {367--389},
URL = {http://www.techscience.com/fdmp/v15n4/33885},
ISSN = {1555-2578},
ABSTRACT = { The  so-called  pore  network  model  has  great  advantages  in    describing  the  process  of  heat  and  mass  transfer  in  porous  media.  In  order  to  construct  a  random  two-dimensional  (2D)  irregular  pore  network  model  for  an  unconsolidated  material,  image  processing  technology  was  used  to  extract  the  required  topological  and geometric information  from  a  2D  sample  of  soybean  particles,  and  a  dedicated  algorithm  was  elaborated to merge some adjacent small pores. Based on the extracted information, a 2D pore  network  model  including  particle  information  was  reconstructed  and  verified    to reflect  the  pore  structure  of  discrete  particles.  This  method  was  used  to  reconstruct  a  random  2D  irregular  pore  network  model  of  wheat.  Accordingly,  a  multi-scale heat and mass  transfer  model  was  implemented  to  simulate  the  drying  of  wheat.  The  simulation results   were   consistent   with   the   experimental   results,   which   indicates   that   the   reconstructed  irregular  pore  network  model  can  effectively  simulate  the  real  pore  structure inside unconsolidated porous media. The present approach may be regarded as the foundation for establishing in the future a three-dimensional pore network model and studying the heat and mass transfer process in a grain pile.},
DOI = {10.32604/fdmp.2019.07762}
}