ZHOU Youhang，LIU Wei，LI Yuze，XU Zhigang，ZHENG Chenchen，ZHU Wenmu

(School of Mechanical Engineering, Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan University, Xiangtan 411105，China)

Abstract: Aiming at the difficulty in analyzing the flow characteristics of sepiolite powder in horizontal tubes, a simulation analysis method for the aerodynamic transport performance of sepiolite powder based on particle size and stress was proposed. Aiming at the smooth gas transmission of particles, the shear stress model of the sepiolite particles in the horizontal circular tube was constructed. The stress conditions of different particle size sepiolite powder in dilute phase gas-solid phases the various force changes of the particles under specific process parameters, and the effects were analyzed. Finally, based on the COMSOL multiphase flow analysis software, combined with the force analysis conclusion, the two-dimensional coupled particle tracking method was used for different sizes of sepiolite powder. Particle pneumatic conveying characteristics were analyzed and verified. The results show that under the specific process parameters, the stress state of the sepiolite powder in the horizontal round tube is closely related to the particle size.

Keywords: transport characteristics; horizontal tube; analysis of force; sepiolite powder

中图分类号：TD714

文献标志码：A

文章编号：1008-5548(2019)01-0052-06

DOI:10.13732/j.issn.1008-5548.2019.01.009

收稿日期： 2018-09-06，修回日期：2018-09-29，在线出版时间：2018-12-24 08:37。

基金项目：国家自然科学基金项目，编号：51775468；湖南省自然科学基金项目，编号：2016JJ2134。

第一作者简介：周友行(1971—)，男，博士，教授，博士生导师，研究方向为数字化设计与制造。E-mail：zhouyouhang@xtu.edu.cn。