ZHOU Youhang, LI Yuze, XU Changfeng, ZHENG Chenchen, ZHU Wenmu, ZHAO Hanyun

(School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China)

Abstract: Euler-Lagrange two-phase particle model was established for the gas-solid two-phase fluid composed of gas and sepiolite particles. The numerical simulation of sepiolite particle classification process was carried out according to Coanda effect of jet. By analyzing the motion characteristics such as the track, velocity and position of sepiolite particles in the wall area of Coanda block, the grading region of particles was determined. The results show that the smaller the particle size of sepiolite is, the more obvious the coanda effect is. According to the positions of particles with different particle sizes in horizontal direction, the grading interval of particles with particle size of 1～10 μm is located at a distance of 0～0.14 m from the jet inlet.

Keywords: sepiolite particle; jet classification; Coanda effect; Coanda block; numerical simulation

中图分类号：TD714                              文献标志码：A

文章编号：1008-5548(2020)04-0015-06

DOI:10.13732/j.issn.1008-5548.2020.04.003

收稿日期： 2019-12-10，修回日期：2020-03-19，在线出版时间：2020-04-28 15:38。

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及制造。E-mail：zhouyouhang@xtu.edu.cn。