WU Zhihao, FAN Fengxian, HU Xiaohong

(School of Energy and Power Engineering，University of Shanghai for Science and Technology, Shanghai 200093, China)

Abstract: In view of the shortcomings of treating the consequence of collisions with the direct simulation Monte Carlo (DSMC)when modeling and simulating the gas-solid two-phase flow, a DSMC method considering the coexistence of agglomeration and rebound as inter-particle collision consequences was proposed.The proposed method was applied to numerical simulation of acoustic agglomeration, and the results predicted by numerical simulation were compared with the experimental data to validate the reliability of the proposed model.The results show that when considering that agglomeration is the consequence of all inter-particle collisions, the deviation between the particle size distribution after acoustic agglomeration predicted by the numerical simulation and the experimental data is obvious. However, when considering the coexistence of agglomeration and rebound as inter-particle collision consequences, good agreement between the numerical predictions and experimental results can be obtained.

Keywords: direct simulation Monte Carlo method; agglomeration; rebound; inter-particle collision; gas-solid two-phase flow

中图分类号： O359； X513

文献标志码：A

文章编号：1008-5548(2021)05-0038-09

DOI:10.13732/j.issn.1008-5548.2021.05.005

收稿日期： 2021-03-07，修回日期：2021-03-27，在线出版时间：2021-08-17 08:41。

基金项目：国家自然科学基金项目，编号：51976130。

第一作者简介：吴志豪(1995—)，男，硕士研究生，研究方向为气固两相流数值模拟。E-mail：wzh15161170061@163.com。

通信作者简介：凡凤仙(1982—)，女，博士，教授，博士生导师，研究方向为多相流动与传热。E-mail：fanfengxian@usst.edu.cn。