文献类型：期刊文献

英文题名：Accurate void fraction calculation for three-dimensional discrete particle model on unstructured mesh

作者：Wu, C. L.[1];Zhan, J. M.[2];Li, Y. S.[3];Lam, K. S.[3];Berrouk, A. S.[4]

机构：[1]Guangdong Ocean Univ, Coll Engn, Zhanjiang 524088, Peoples R China;[2]Zhongshan Univ, Dept Appl Mech & Engn, Guangzhou 510275, Guangdong, Peoples R China;[3]Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China;[4]Petr Inst, Dept Chem Engn, Abu Dhabi, U Arab Emirates

年份：2009

卷号：64

期号：6

起止页码：1260

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000264309000015)、、EI(收录号：20090711903889)、Scopus(收录号：2-s2.0-59349119387)、WOS

基金：The authors gratefully acknowledge financial support from the Guangdong Natural Science Foundation grant. This work was also supported by an intenal project from Guangdong Ocean University.

语种：英文

外文关键词：Voidage; Unstructured mesh; Fluidization; Discrete particle model; Multiphase flow

外文摘要：An accurate and efficient analytical method for computing the three-dimensional local void fraction is proposed in the context of discrete particle modeling. it is developed for the general case of unstructured meshes whose use is unavoidable to efficiently simulate modern gas-solid fluidized bed reactors characterized by complex geometries. The method relates the three-dimensional void fraction to several geometrical parameters. This allows the exact voidage evaluation for the frequently occurring case of having particles not wholly contained within one grid cell regardless its shape. Failing to accurately account for these common particle configurations in dense gas-particle systems has proven detrimental to the accuracy of their simulations. (c) 2008 Elsevier Ltd. All rights reserved.