WU Qiang， ZHANG Kai， WANG Shuai

(School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

Abstract: In this paper, a hybrid Eulerian-Lagrangian approach was used to study the flow and heat transfer performance of a swirling fluidized bed. Based on the prediction of local bed voidage and particle swirling velocity in the swirling fluidized bed, the wear behavior of the wall was studied, and the influence of operating conditions on the wear behavior was analyzed. Moreover, the bed-to-wall heat transfer and gas-solid interphase heat transfer were analyzed, and the influence of operating speed was also considered. The results show that the bed voidage distribution in the bed and the swirl velocity of particles are sensitive to the change of operation gas velocity, and the wall wear increases greatly in the stable swirling mode. In addition, small particles show better interphase heat transfer performance than others.

Keywords: swirling fluidized bed; dense discrete phase model; flow characteristic; wear; heat transfer

中图分类号：TK12

文献标志码：A

文章编号：1008-5548(2021)03-0016-09

DOI:10.13732/j.issn.1008-5548.2021.03.003

收稿日期： 2021-01-12，修回日期：2021-03-12，在线出版时间：2021-04-07 16:09。

基金项目：国家自然科学基金，编号：52076060。

第一作者简介：武强(1999—)，男，硕士研究生，研究方向为多相流数值模拟。E-mail: 969548078@qq.com。

通信作者简介：王帅(1985—)，男，博士，教授，博士生导师，研究方向为多相流动与热质传递，颗粒流体复杂系统的计算流体力学与反应器多尺度模拟。E-mail: shuaiwang@hit.edu.cn。