Experimental and numerical study of Y-jet nozzle of LN2-spray temperature-adjusting system

被引：0
|
作者：
Wang Z. [1 ]
Xing Y.-M. [1 ]
Liu X. [1 ]
Zhao L. [1 ]
机构：
[1] School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2016年 / 31卷 / 12期
关键词：
Atomization; Liquid nitrogen; LN[!sub]2[!/sub]-spray temperature-adjusting system; Low temperature environment simulation; Y-jet nozzle;
D O I：
10.13224/j.cnki.jasp.2016.12.011
中图分类号：
学科分类号：
摘要：
Based on Euler-Lagrange method, the characteristic of LN2 (liquid nitrogen) atomized by the Y-jet nozzle was studied by discrete phase model and air blast atomizer model of software FLUENT. Because of the evaporation effect of LN2 droplets, the spray angle was about 10°, significant smaller than the spray angle of water, and the spray distance was shortened. The effect of operating pressure on the Sauter mean diameter (SMD) and the distribution of volume fraction and quantity percentage was analyzed. The results indicate that the SMD along the spray direction is essentially unchanged. The SMD is controlled by gas velocity and gas-liquid ratio, and gas velocity is the major factor in the low pressure conditions while gas-liquid ratio is the major factor in the high pressure conditions. The distribution of LN2 droplets diameter is more concentrated than in the cases using water, due to the evaporation of droplets. The effect of temperature control of LN2-spray temperature-adjusting system using Y-jet nozzles with different flow rate demands was also investigated. The temperature of outlet was lower than 98 K with temperature difference of 12 K between inlet and outlet, and the temperature difference of outlet was within ±1 K, which could satisfy the temperature control requirements. © 2016, Editorial Department of Journal of Aerospace Power. All right reserved.
引用
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页码：2904 / 2912
页数：8
相关论文
共 16 条
  • [1] Zhang L., Liu M., Wang Z., Et al., A review of technologies of temperature-adjustable heat sink, Spacecraft Environment Engineering, 29, 2, pp. 179-184, (2012)
  • [2] Zeng Q., Kong W., Ai Y., Et al., Combustion performances of lean direct injection model combustor with three injectors, Journal of Aerospace Power, 29, 6, pp. 1295-1300, (2014)
  • [3] Zhang R., Fan W., Song S., Atomization and evaporation performance experiment of evaporating tube for trapped vortex combustor, Journal of Aerospace Power, 26, 11, pp. 2495-2502, (2011)
  • [4] Wang L., Zhang C., Wei B., Et al., Experimental investigation of kerosene supersonic combustion test using aerated-liquid injectors, Journal of Aerospace Power, 24, 2, pp. 353-359, (2009)
  • [5] Huo W., Lin Y., Zhang C., Et al., Research on n-decane as surrogate fuel of aviation kerosene in atomization process, Journal of Aerospace Power, 31, 1, pp. 188-195, (2016)
  • [6] Zhou B., Ji H., Zhang B., Experiment of swirled air effect on spray characteristic of double-line pressure-swirl atomizer, Journal of Aerospace Power, 28, 9, pp. 1933-1941, (2013)
  • [7] Xu Z., Tao L., Zheng Z., Experiment research and theoretical analysis about L-N<sub>2</sub> spraying fluidized quick freezing of broccoli, Journal of Engineering Thermophysics, 28, pp. 49-51, (2007)
  • [8] Guo X., Tao L., Investigation on freezing characteristic of LN<sub>2</sub>-spraying fluidized cooling system, Journal of Engineering Thermophysics, 24, 3, pp. 475-477, (2003)
  • [9] Su Y., Development of new cryogenic MQL equipment and research on the cryogenic high speed cutting of difficult-to-machine materials, (2007)
  • [10] Yu Y., Technology research of stern tube bearing cold-installation, (2006)
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