PU Zhixin，JIA Jialiang，WU Zhilong，ZHAI Ziguang

(College of Mechanical Engineering, Liaoning Technical University, Fuxin 123000, China)

Abstract: Based on computational fluid dynamics (CFD) method, the flow characteristics of gas-solid two-phase flow in the inner passage of H-type vacuum glove box were numerically simulated. Taking the glove box under special conditions as the research object, a three-dimensional model of H-type vacuum glove box was established, and the internal flow field of the glove box was explored using the gas-solid two-way coupling method. By analyzing the influence of gas-solid two-phase velocity and particle size variation on the solid phase movement process under different working conditions in the inner flow passage, the phenomenon that it took a long time to reach the ideal atmosphere in the actual production process, and the phenomenon of particle deposition or smoke were explained. Through theoretical analysis and simulation, it is found that when the particle size of solid particles is constant at 90 nm, the velocity of solid particles increases obviously with the increasing of the inlet velocity. When the inlet velocity is constant at 4.777 m/s and the particle size is less than 5 μm, the solid particles have good adjoint to the airflow structure. When the particle size of solid particles is greater than or equal to 10 μm, solid particles have poor concomitant effect on airflow structure, and local deposition may occur.

Keywords: computer fluid dynamics; numerical simulation; gas solid bidirectional coupling; particle size

中图分类号：TU7

文献标志码：A

文章编号：1008-5548(2021)06-0135-10

DOI:10.13732/j.issn.1008-5548.2021.06.017

收稿日期： 2020-11-12，修回日期：2021-07-02，在线出版时间：2021-10-18 16:34。

第一作者简介：蒲志新(1973—)，男，硕士，副教授，硕士生导师，研究方向为机器人技术和先进制造系统。E-mail：puzhixin@126.com。

通信作者简介：贾加亮(1996—)，女(满族)，硕士研究生，研究方向为混联机器人。E-mail：18342800359@163.com。