Large-scale flow structure and energy separation in a Ranque–Hilsch vortex tube with particle image velocimetry measurement: an experimental study
Large-scale flow structure and energy separation in a Ranque–Hilsch vortex tube with particle image velocimetry measurement: an experimental study
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采用粒子图像测速测量的 Ranque-Hilsch 涡流管中的大规模流动结构和能量分离：实验研究
DOI：
10.1007/s12650-022-00873-4
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发表时间：
2022-09
影响因子：
1.7
通讯作者：
Tinghuang Fu
中科院分区：
文献类型：
--
作者：
Zheyu Shi;Xiangji Guo;Bo Zhang;Tinghuang Fu
The flow structure of the vortex tube is considered to be the key to understanding the energy separation mechanism, and the unsteady vortex breakdown and precessing vortex core determine the characteristics and behaviour of the flow structure. Thus, transparent vortex tubes with a diameter of 30 mm were designed for main tube visualization, and two-dimensional (2-D) particle image velocimetry (PIV) measurement was adopted to investigate the instantaneous and time-averaged flow field on the meridian plane. The distributions of the axial velocity, radial velocity, vorticity, and, especially, the reverse flow boundaries were obtained to understand the flow structure within vortex tubes. Various operating conditions with different cold mass fractions (0.1–0.9), tube lengths (360, 600, and 900 mm), and inlet pressures (0.1 and 0.2 bar) were studied to reveal the effects of the reverse flow boundary on the energy separation performance. The large-scale flow structure of the precessing vortex core was found to be located at the reverse flow boundary, and the vortex core precession determines the mass transfer processes between the inner and outer layers. In addition, the axial velocity fields and the distributions of the reverse flow boundary captured by the 2-D PIV agree with our earlier results from 2-D laser Doppler velocimetry to a great extent, confirming the feasibility of these two laser nonintrusive measurement methods and the streamline results from our earlier LES study.Graphical abstract
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影响因子：
3.2
作者：
Yunpeng Xue;M. Arjomandi;R. Kelso
通讯作者：
Yunpeng Xue;M. Arjomandi;R. Kelso
DOI：
10.1016/s0017-9310(98)00191-4
发表时间：
1999-02
影响因子：
5.2
作者：
W. Frohlingsdorf;Helena Unger
通讯作者：
W. Frohlingsdorf;Helena Unger
基于LDV测量的Ranque-Hilsch涡流管流动结构和能量分离实验研究
影响因子：
3.9
作者：
Xiangji Guo;Bo Zhang;Ling Li;Bo Liu;Tinghuang Fu
通讯作者：
Tinghuang Fu
Ranque-Hilsch 涡流管流动结构研究的批判性评论
影响因子：
3.9
作者：
Xiangji Guo;Bo Zhang;Bo Liu;Xiang Xu
通讯作者：
Xiang Xu
冷质量分数对涡流管内参数影响的实验研究
影响因子：
3.9
作者：
Li Nian;Jiang Guannan;Fu Lichen;Tang Liming;Chen Guangming
通讯作者：
Chen Guangming