Investigation on the flow rotation effect and elimination in hypersonic wind tunnel

Chen Aiguo; Li Xuguo; Mao Chunman; Sun Liangbao; Long Yongsheng; Yang Yanguang

doi:10.11729/syltlx20150146

Volume 30 Issue 4

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Chen Aiguo, Li Xuguo, Mao Chunman, et al. Investigation on the flow rotation effect and elimination in hypersonic wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(4): 93-96. doi: 10.11729/syltlx20150146

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Investigation on the flow rotation effect and elimination in hypersonic wind tunnel

doi: 10.11729/syltlx20150146

Hypersonic Aerodynamics Research Institute, China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

Received Date: 2015-12-01
Rev Recd Date: 2016-03-02
Publish Date: 2016-08-25

Abstract

Abstract

Wind tunnel experiments require high quality flow field,but in some hypersonic wind tunnel,the inlet flow may be rotated for preventing the local overheating of the heater.In order to eliminate the rotation,a reverse rotating flow is added into the main stream before the stability section of the wind tunnel.A wing model and a high precision roll balance were designed to study the total effect of the flow rotation in the hypersonic wind tunnel.The rolling moment measurements are carried out in the Φ0.3m hypersonic low density wind tunnel of CARDC under the test conditions of Mach 6, stagnation pressure of about 2×10⁵Pa and room temperature nitrogen.The results show the rotation exits and the maximum rolling moment coefficient is 1.657×10^-3;Reverse flow of about 2% total flow flux can reduce the rolling moment coefficient by 2 orders of magnitude. It is proved to be an effective solution for improving the quality of the wind tunnel flow field.
- hypersonic wind tunnel,
- flow rotation,
- rotation moment

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References(7)

References

[1]	李荣先, 李勇, 张会强, 等. 旋风筒内强旋湍流流动的实验研究[J]. 燃烧科学与技术, 1996, 2(2): 135-138. http://www.cnki.com.cn/Article/CJFDTOTAL-RSKX602.005.htm 吴国江, 王峻晔, 郑文德, 等. 旋风筒内旋转气流的测量及分析[J]. 上海交通大学学报, 1998, 32(7): 66-69. http://www.cnki.com.cn/Article/CJFDTOTAL-RSKX602.005.htm
[2]	Rhode D L, Lilley D G, Mclaughlin D K. Mean flowfields in axisymmetric combustor geometries with swirl[J]. AIAA Journal, 1983, (4): 593-600. http://www.cnki.com.cn/Article/CJFDTOTAL-SHJT807.015.htm 唐明, 朱惠龄, 严传俊, 等. 模型燃烧室中三元旋转流场的实验研究[C]//高等学校工程热物理学术会议论文集, 1986. http://www.cnki.com.cn/Article/CJFDTOTAL-SHJT807.015.htm
[3]	Paschereitc O, Gutmark E, Weisenstein W. Coherent structures in swirling flows and their role in acoustic combustion control[J]. Physics of Fluids, 1999, 11: 2667-2678. http://cn.bing.com/academic/profile?id=2225660524&encoded=0&v=paper_preview&mkt=zh-cn
[4]	蒋忠东, 赵忠良, 王树民, 等. 高超声速风洞小滚转力矩测量技术研究[J]. 航空学报, 2001, 22(6): 488-490.
[5]	白葵, 冯明溪, 付光明. 小不对称再入体滚转气动力测量技术[J]. 流体力学实验与测量, 2002, 9: 16(3): 64-67. doi: 10.1063/1.870128
[6]	Li R X, Li Y, Zhang H Q, et al. Experimental study of strongly swirling flows in a cyclone section[J]. Journal of Combustion Science and Technology, 1996, 2(2): 135-138. http://www.cnki.com.cn/Article/CJFDTOTAL-HKXB200106001.htm Wu G J, Wang J Y, Zheng W D, et al. Measurement and analysis of swirling flow in a cyclone cylinder[J]. Journal of Shanghai Jiaotong University, 1998, 32(7): 66-69. http://www.cnki.com.cn/Article/CJFDTOTAL-HKXB200106001.htm
[7]	Jiang Z D, Zhao Z L, Wang S M, et al. Research on the measurement techniques for micro-rolling-moment in a hypersonic wind tunnel[J]. Acta Aeronautica et Astronautica Sinica, 2001, 22(6): 488-490. http://www.cnki.com.cn/Article/CJFDTOTAL-LTLC200203011.htm Bai K, Feng M X, Fu G M. Experimental technique for rolling aerodynamic of slight asymmetric re-entry body[J]. Experiments and Measurements in Fluid Mechanics, 2002, 16(3): 64-67. http://www.cnki.com.cn/Article/CJFDTOTAL-LTLC200203011.htm