文献类型：期刊文献

英文题名：Investigation of the simultaneous volumetric 3-component flow field inside a hydrocyclone

作者：Wang, Jiangang[1];Bai, Zhishan[1];Yang, Qiang[1];Fan, Yi[1];Wang, Hualin[1]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2016

卷号：163

起止页码：120

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20161102080697);WOS:【SCI-EXPANDED(收录号:WOS:000374076700014)】；

基金：We would like to thank for the sponsorship of National Science Foundation for Distinguished Young Scholars of China (Grant No. 51125032).

语种：英文

外文关键词：Flow field; Separation; Three-dimensional three-component; Secondary vortex; Locus of vertical velocity

摘要：The separation mechanism of hydrocyclone is elucidated by determining the three velocity components of the flow field. In this study, volumetric 3-component velocimetry measurement system was developed to investigate the three-dimensional three-component flow field inside a 35 mm mini-hydrocyclone. Measurement results show the magnitude of maximum tangential, axial, radial velocity component in r-z plane of the cylindrical and cone part is about 4:2:1. The parameter n of tangential velocity in the free vortex area is fitted to be 0.5-0.7, which is a variable along axial direction. Radial velocity is non-axisymmetric, while the other two are quasi-axisymmetric. The asymmetry of the radial velocity is found to be the consequence of the existing downward progression of secondary vortices. In addition, the locus of vertical velocity was constructed in three dimensional and the shortcut flow rate was calculated using three dimensional axial velocity. These knowledge helps the further understanding of the separation mechanism of the hydrocyclone. (C) 2016 Published by Elsevier B.V.