斜切对抑制引射式波瓣喷管内部流动分离的效果研究
收稿日期: 2012-03-09
修回日期: 2012-07-06
网络出版日期: 2012-07-30
基金资助
江苏省普通高校研究生科研创新计划资助项目(CXZZ11_0222)
Research on Surpressing Flow Separation of Lobed Mixer-ejector by Scarfing Treatment
Received date: 2012-03-09
Revised date: 2012-07-06
Online published: 2012-07-30
Supported by
Funding of Jiangsu Innovation Program for Graduate Education (CXZZ11_0222)
潘丞雄 , 张靖周 , 单勇 . 斜切对抑制引射式波瓣喷管内部流动分离的效果研究[J]. 航空学报, 2013 , 34(2) : 255 -262 . DOI: 10.7527/S1000-6893.2013.0029
To investigate flow separation inside lobed mixer-ejector and the way to control it, the relationship between lobed angle and flow separation inside lobed mixer-ejector has been revealed. To control the flow separation inside a lobed mixer-ejector with a big lobed angle, scarfing treatment is tried to study its effectiveness in eliminating separation bubbles inside the lobed mixer-ejector by numerical simulation. Results show that scarfing treatment does eliminate the separation bubbles inside the mixer-ejector, hence enhancing nozzle ejecting ratio and reducing total pressure loss. Therefore a conclusion can be drawn that for a lobed mixer-ejector, scarfing the nozzle is a proper way to control flow separation inside lobed mixer-ejectors.
Key words: lobe; ejector; flow separation; scarfing; numerical simulation
[1] Presz W M, Jr, Werle M. Multi-stage mixer ejector systems. AIAA-2002-4064, 2002.
[2] Tester B J, Fisher M J, Dalton W N. A contribution to the understanding and prediction of jet noise generation in forced mixers. AIAA-2004-2897, 2004.
[3] Xie Y, Liu Y H. Effects of lobe penetration ratio on performance of mixer exhaust system. Journal of Propulsion Technology, 2011, 32(2): 207-213. (in Chinese) 谢翌, 刘友宏. 波瓣穿透率对波瓣混合排气系统性能影响.推进技术, 2011, 32(2): 207-213.
[4] Liu Y H, Fan C, Xie Y, et al. Effect of lobe numbers on the performance of a lobed mixer in the forced mixing exhaust system. Journal of Aerospace Power, 2010, 25(8): 1683-2689. (in Chinese) 刘友宏, 樊超, 谢翌, 等. 波瓣数对波瓣强迫混合排气系统性能影响. 航空动力学报, 2010, 25(8): 1683-2689.
[5] Shan Y, Zhang J Z, Li L G. Numerical calculation and experimental verification for the inferred radiation characteristics of helicopter inferred radiation suppressor. Journal of Infrared and Millimeter Waves, 2006, 25(2): 95-100. (in Chinese) 单勇, 张靖周, 李立国. 直升机红外抑制器红外辐射特性的数值研究和实验验证. 红外与毫米波学报, 2006, 25(2): 95-100.
[6] Zhang J Z, Shan Y, Li L G. Investigation on lobed nozzle mixer-ejector infrared suppressor for helicopter exhaust system. Acta Aeronautica et Astronautica Sinica, 2007, 28(1): 32-36. (in Chinese) 张靖周, 单勇, 李立国. 直升机排气系统用波瓣喷管引射-混合式红外抑制器研究. 航空学报, 2007, 28(1): 32-36.
[7] Zhang J Z, Shan Y, Li L G. Computation and validation of parameter effects on lobed mixer-ejector performances. Chinese Journal of Aeronautics, 2005, 18(3): 193-198.
[8] Presz W M, Jr, Morin B L, Blinn R F. Short efficient ejector systems. AIAA-1987-1837, 1987.
[9] Shan Y, Zhang J Z. Numerical investigation on the effects of lobe nozzle geometric parameters on mixer-ejector performance. Journal of Aerospace Power, 2005, 20(6): 973-977. (in Chinese) 单勇, 张靖周. 波瓣喷管结构参数对引射混合器性能影响的数值研究. 航空动力学报, 2005, 20(6): 973-977.
[10] O’Sullivan M N, Waitz I A, Greitzer E M, et al. A computational study of viscous effects on lobed mixer flow features and performance. AIAA-1994-3085, 1994.
[11] Shan Y, Zhang J Z, Xu L. Numerical investigation of aerodynamic and mixing characteristics of scarfed lobed mixer for turbofan engine exhaust system. Transactions of Nanjing University of Aeronautics & Astronautics, 2009, 26(2):130-136.
[12] Yu S C M, Hou Y, Chan W K. Scarfing and scalloping effects on lobed forced mixer at low-speed conditions. Journal of Propulsion and Power, 2000, 16(3): 440-448.
[13] Liu Y H, Guo N, Li J N, et al. Effect of cut angles at trailing edge on the performance of a lobed mixer. Journal of Aerospace Power, 2009, 24(9): 1917-1922. (in Chinese) 刘友宏, 郭楠, 李江宁, 等. 后缘切角对波瓣混合器性能影响. 航空动力学报, 2009, 24(9): 1917-1922.
[14] Shan Y, Zhang J Z. Numerical computation and examination of a lobed mixer-ejector. Journal of Propulsion Technology, 2004, 25(4): 320-324. (in Chinese) 单勇, 张靖周. 波瓣喷管引射-混合器的数值研究与验证. 推进技术, 2004, 25(4): 320-324.
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