WANG Lin， WANG Fengming， LIU Zhanzhong， ZHANG Chuhua， LI Guojun

（Key Laboratory of Thermal Fluid Science and Engineering of MOE， Xi’ an Jiaotong University， Xi’ an 710049， China）

Abstract: Computational fluid dynamics （CFD） method was used to carry out numerical simulation of single-phase flow field and improve the turbine structure. The effects of turbine structure and turbine speed on the flow field and grinding characteristics of sand mill were analyzed. The results show that the improved turbine can make the fluid inside the grinding machine have a higher flow rate, improve the collision frequency and energy between particles in the grinding medium, increase the velocity gradient near the wall of the fluid, and improve the overall and maximum grinding intensity. When the turbine speed increases within a certain range, the flow field characteristics in the increasing will not change, and the increasing of grinding intensity is positively correlated with the turbine speed.

Keywords: turbine sand mill; grinding characteristics; numerical simulation; computational fluid dynamics

中图分类号： TQ630.5                         文献标志码：A

收稿日期： 2022-04-17， 修回日期：2022-05-21，在线出版时间：2022-11-01。

基金项目：国家重点研发计划资助项目，编号：2016YFB0200900。

第一作者简介：王霖（1998—），男（满族），硕士研究生，研究方向为叶轮机械三维设计。E-mail： 3120303175@xjtu.edu.cn。

通信作者简介：李国君（1964—），男，教授，博士，博士生导师，研究方向为流体力学。E-mail： liguojun@xjtu.edu.cn。

文章编号：1008-5548（2022）06-0010-11

DOI:10.13732/j.issn.1008-5548.2022.06.002