Design and debugging of the liquid nitrogen storage device in continuous transonic wind tunnel cooling system

Li Feng; Gao Chao; Xi Zhongxiang; Zhang Guobiao

doi:10.11729/syltlx20180131

Volume 33 Issue 5

Turn off MathJax

Article Contents

Article Navigation > Journal of Experiments in Fluid Mechanics > 2019 > 33(5): 105-110

Li Feng, Gao Chao, Xi Zhongxiang, et al. Design and debugging of the liquid nitrogen storage device in continuous transonic wind tunnel cooling system[J]. Journal of Experiments in Fluid Mechanics, 2019, 33(5): 105-110. doi: 10.11729/syltlx20180131

Citation:

PDF( 6380 KB)

Design and debugging of the liquid nitrogen storage device in continuous transonic wind tunnel cooling system

doi: 10.11729/syltlx20180131

1.
National Key Laboratory of Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an 710072, China
2.
China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

Received Date: 2018-09-17
Rev Recd Date: 2018-11-07
Publish Date: 2019-10-25

Abstract

Abstract

The low temperature operation is an effective way to improve the Reynolds number in wind tunnel experiments. By means of liquid nitrogen injection, the first cooling system for the NF-6 continuous transonic wind tunnel has been built in China. The overall scheme and main technical indicators of the liquid nitrogen injection cooling system in NF-6 wind tunnel are introduced. The structure and technical principles of the liquid nitrogen storage device of the cooling system are expounded and the static and dynamic debugging results are presented. Test results indicate that our calculation method of the liquid nitrogen consumption is correct and it provides theoretical references for volume estimation of the liquid nitrogen tank. The scheme design of the liquid nitrogen storage device is reasonable and the liquid nitrogen injecting process is smooth and unimpeded. Meanwhile, the self-pressurized system of the liquid nitrogen storage device is working well and the heat-insulating properties of the liquid nitrogen tank can meet the requirements of the cryogenic liquid nitrogen storage.The daily evaporation rate of the liquid nitrogen in the tank is 0.044%, far lower than the designed index.The liquid nitrogen storage device has a good match with the whole cooling system. Throughout the debugging process, the key indicators such as the total temperature, total pressure, Mach number and running time have reached design requirements and excellent performance was achieved.
- liquid nitrogen storage device,
- cooling system,
- wind tunnel,
- Reynolds number

FullText(HTML)

References(12)

References

[1]	范洁川.风洞实验手册[M].北京:航空工业出版社, 2002. Fan J C. Handbook of wind tunnel test[M]. Beijing:Aviation Industry Press, 2002.
[2]	林学东, 胡向鹏, 王辉, 等. GJB 1179A-2012, 低速风洞和高速风洞流场品质要求[S].北京: 中国航空综合技术研究所, 2012. Lin X D, Hu X P, Wang H, et al. GJB 1179A-2012, Requirement for flow quality of low and high speed wind tunnels[S]. Beijing: Avic China Aero-polytechnology Establishment, 2012.
[3]	范洁川, 樊玉辰, 姚民棐, 等.世界风洞[M].北京:航空工业出版社, 1992. Fan J C, Fan Y C, Yao M F, et al. Wind tunnels of the world[M]. Beijing:Aviation Industry Press, 1992.
[4]	GartrellL R, Gooderum P B, Hunter W W Jr, et al. Laser velocimetry technique applied to the Langley 0.3-meter transonic cryogenic tunnel[R]. NASA-TM-81913, 1981.
[5]	周廷波, 高超, 张正科, 等. NF-6风洞喷液氮降温系统研制[J].航空动力学报, 2018, 33(2):327-337. http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201802010 Zhou T B, Gao C, Zhang Z K, et al. Development of liquid nitrogen injection cooling system of NF-6 wind tunnel[J]. Journal of Aerospace Power, 2018, 33(2):327-337. http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201802010
[6]	Gao C, Zhou T B, Zhang Z K, et al. The overall scheme design and debugging of the liquid nitrogen injection cooling system in NF-6 wind tunnel[R]. AIAA 2016-3656, 2016.
[7]	乔志德.西北工业大学NF-6增压连续式高速翼型风洞论证报告[Z]. NF-6风洞设计方案评审会资料, 1997.
[8]	张国彪. NF-6降温系统设计技术条件[R].中国国防科技报告, 2012.
[9]	刘政崇, 廖达雄, 董谊信, 等.高低速风洞气动与结构设计[M].北京:国防工业出版社, 2003.
[10]	张国彪, 康虎.西北工业大学NF-6增压连续式高速翼型风洞研制技术总结[R].绵阳: 中国空气动力研究与发展中心, 2008.
[11]	李峰, 高超, 郗忠祥, 等. NF-6风洞液氮降温供配气系统设计与调试[R].第六届近代实验空气动力学会议, 2017.
[12]	高超, 郗忠祥. "风洞降温系统"研制技术协议[Z]. 2012.