Open AccessNumerical study on the heterogeneous flow inporous biofilters
Author(s) -
Rong Xiang,
Weiwei Yan,
SU Zhong-di,
Wu Jie,
Kai Zhang,
Fubing Bao
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.164702
Subject(s) - biofilter , lattice boltzmann methods , inlet , porous medium , reynolds number , mechanics , flow (mathematics) , porosity , darcy number , filter (signal processing) , computer science , environmental science , materials science , environmental engineering , mechanical engineering , physics , engineering , turbulence , composite material , nusselt number , computer vision
Biofiltration technology has received much attention because of its effectiveness, economy and environmentally friendly property, which can filter the odors caused chiefly by H2S via the biological treatments. In this study, the lattice Boltzmann method is adopted to numerically investigate the heterogeneous flow in three porous biofilter models. The numerical results indicate that the property of porous media and the inlet flow condition have significant influence on the value of critical Rayleigh number. With the increase of Darcy number and porosity, the critical Rayleigh number will gradually decrease; however, it will steadily increase with the augment of inlet Reynolds number. The present study is helpful to provide a rational theoretical guidance for the optimized design of biofilters.