Petroleum Science >2022,??lssue 2:??- DOI: https://doi.org/10.1016/j.petsci.2021.11.009
Numerical analysis on the influence of vortex motion in a reverse Stairmand cyclone separator by using LES model Open?Access
文章信息
作者：Zhu-Wei Gao, Zhong-Xin Liu, Yao-Dong Wei, Cheng-Xin Li, Shi-Hao Wang, Xin-Yu Qi, Wei Huang,
作者單位：
投稿時間：
引用方式：Zhu-Wei Gao, Zhong-Xin Liu, Yao-Dong Wei, Cheng-Xin Li, Shi-Hao Wang, Xin-Yu Qi, Wei Huang, Numerical analysis on the influence of vortex motion in a reverse Stairmand cyclone separator by using LES model, Petroleum Science, Volume 19, Issue 2, 2022, Pages 848-860,
文章摘要
Abstract
This study aims to analyze the influence of vortex motion in a reverse Stairmand cyclone separator by using LES model. The mathematical analysis indicated that the energy dissipation and the flow characteristics of incompressible fluid are directly related to on the vortex motion. The results of the Q criterion-based iso-vortex surface could well reflect the tendency of the vortex structure, in which the iso-vortex surface exhibited a distorted distribution rather than around the center axis. At the turning point of velocity vector, vortices were formed and developed, and the point was the center of the local vortex core. In addition, the vortex formed an irregular annular region around the wall at the bottom of vortex finder. The vortex structure near the dust hopper presented a strong distortion. Moreover, there were two rotating flow in the opposite direction within the dust hopper. These phenomena would affect the separation performance, which was significance to cyclone separator.
This study aims to analyze the influence of vortex motion in a reverse Stairmand cyclone separator by using LES model. The mathematical analysis indicated that the energy dissipation and the flow characteristics of incompressible fluid are directly related to on the vortex motion. The results of the Q criterion-based iso-vortex surface could well reflect the tendency of the vortex structure, in which the iso-vortex surface exhibited a distorted distribution rather than around the center axis. At the turning point of velocity vector, vortices were formed and developed, and the point was the center of the local vortex core. In addition, the vortex formed an irregular annular region around the wall at the bottom of vortex finder. The vortex structure near the dust hopper presented a strong distortion. Moreover, there were two rotating flow in the opposite direction within the dust hopper. These phenomena would affect the separation performance, which was significance to cyclone separator.
關鍵詞
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Numerical simulation; Cyclone separator; Mathematical analysis; Vortex motion; Local analysis