Lattice Boltzmann simulation of swirling flow in hydrocyclone

被引：0
|
作者：
Hu L. [1 ]
Zhu W. [1 ]
Zhang X. [1 ]
机构：
[1] College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin
来源：
Zhu, Weibing (zhuweibing@hrbeu.edu.cn) | 1864年 / Editorial Board of Journal of Harbin Engineering卷 / 38期
关键词：
Hydrocyclone; Lattice Boltzmann method; Mesoscopic scale; Precessing vortex core; Secondary flow; Single-phase flow field; Swirling flow; Turbulence flow;
D O I：
10.11990/jheu.201610050
中图分类号：
学科分类号：
摘要：
To determine the suitability of the lattice Boltzmann method for swirling flow field in a hydrocyclone, the liquid swirling flow was numerically simulated based on the experimental model of the hydrocyclone and the lattice Boltzmann method. The distribution of the mean speed obtained by simulation in the study and the experimental results were compared. Then, the relative errors between the average tangential speed, average axial speed, and experimental values were given. The results indicate that the lattice Boltzmann method can simulate the swirling flow and capture the secondary backflow phenomenon and unstable characteristics of the vortex core of the fluid field in the hydrocyclone. The distribution of the average tangential and axial velocity obtained by simulation are basically in agreement with the experimental results, and the simulation results on the secondary backflow in the center is better than the results by Hreiz(2011). The simulation shows that the mean radial velocity alternately changes in axial direction, which is consistent with the conclusion by Hreiz(2011). Meanwhile, the phenomenon of precessing the vortex core in the hydrocyclone was effectively predicted. Therefore, the results of this study show that the lattice Boltzmann method can be used to simulate the swirling flow field in the hydrocyclone. © 2017, Editorial Department of Journal of HEU. All right reserved.
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页码：1864 / 1871
页数：7
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