Experimental study of the impacts of cold mass fraction on internal parameters of a vortex tube

Experimental study of the impacts of cold mass fraction on internal parameters of a vortex tube
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冷质量分数对涡流管内参数影响的实验研究

DOI:
10.1016/j.ijrefrig.2019.05.002
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发表时间:
2019-08
影响因子:
3.9
通讯作者:
Chen Guangming
Chen Guangming
中科院分区:
工程技术2区
文献类型:
--
作者:
Li Nian;Jiang Guannan;Fu Lichen;Tang Liming;Chen Guangming

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为了获得旋涡管的内部参数,设计了大型旋涡管并搭建了实验装置。利用五孔探针和热电偶测量了涡旋管内的三维速度、静压、静态温度和总温度分布。选择了4种不同的冷质量分数条件(0.2、0.4、0.6和0.8),讨论了其对涡流管内部参数的影响。与传统的观点不同,切向速度被认为是稳定的汉堡涡旋形式。发现了一个反向流动边界,并在不同工况和轴向位置下改变了其位置。在此基础上,通过实验研究发现,在喷嘴出口附近存在最低的静态温度,并首次提出了一种新的静态温差分布规律。
In order to get the internal parameters of a vortex tube, a large-scale vortex tube was designed and an experimental device was built. A five-hole probe and thermocouples were used to obtain the three-dimensional velocities, the static pressure, static temperature and total temperature distributions inside the vortex tube. Four different cold mass fraction conditions (0.2, 0.4, 0.6 and 0.8) were chosen and the impacts on the internal parameters of the vortex tube were discussed. Different from the traditional view, the tangential velocity was considered to be the steady Burgers vortex form. A reverse flow boundary was found, and the location of which was changed at different operation conditions and axial positions. Further, it was found that the lowest static temperature existed near the nozzle outlet, and a new static temperature difference distribution law was firstly proposed experimentally.
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发表时间: 2009-03
期刊: Journal of the American Society of Naval Engineers
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