Fluid Mechanics and Flight Mechanics

Suppression of exhaust plume infrared and jet noise of large aspect ratio curved mixing duct

  • Zongyao YANG ,
  • Jingzhou ZHANG ,
  • Yong SHAN
Expand
  • College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

Received date: 2021-12-23

  Revised date: 2022-01-13

  Accepted date: 2022-03-02

  Online published: 2022-03-04

Supported by

National Science and Technology Major Project(J2019-III-0009-0053)

Abstract

To suppress exhaust plume infrared and jet noise of the curved mixing duct with a large aspect ratio, the structure of the mixing duct nozzle is redesigned on the basis of the narrow rectangular nozzle, including lobed nozzles with different structural parameters and coronal sawtooth nozzles with different intrusion degrees. The numerical simulation method is used to obtain the jet flow field of the above nozzles. The forward-reverse ray-tracing method and FW-H acoustic module of Fluent software are used to calculate the infrared radiation intensity of the exhaust plume and the overall sound pressure level of the jet, respectively. Analysis of the results reveals the mechanism of influence of the narrow rectangular nozzle, lobe nozzle and coronal sawtooth nozzle on the pumping performance, pressure loss and exhaust plume infrared and jet noise characteristics of the mixing duct. The strengthening leading role of the flow vortex excited by the lobe nozzle and sawtooth nozzle in the mixing process of jet and ambient air flow and the abilities of the flow vortex to suppress both exhaust plume infrared radiation and jet noise are also explained.

Cite this article

Zongyao YANG , Jingzhou ZHANG , Yong SHAN . Suppression of exhaust plume infrared and jet noise of large aspect ratio curved mixing duct[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(5) : 126848 -126848 . DOI: 10.7527/S1000-6893.2022.26848

References

1 RAO G A, MAHULIKAR S P. Integrated review of stealth technology and its role in airpower[J]. The Aeronautical Journal2002106(1066): 629-642.
2 RAO G A, MAHULIKAR S P. New criterion for aircraft susceptibility to infrared guided missiles[J]. Aerospace Science and Technology20059(8): 701-712.
3 KANCLEBO S W. Boeing silorsky findings underscore RAH-66 stealth[J]. Aviation Week and Space Technology1993139(3): 22-23.
4 STEVEN A. Tomorrow’s high-tech helicopter[J]. Mechanical Engineering1991113(6): 41-45.
5 孙中海, 左丽华, 王先炜, 等. 直升机红外隐身技术研究[J]. 直升机技术2006(2): 19-24.
  SUN Z H, ZUO L H, WANG X W, et al. Study of infrared signature suppression for helicopter[J]. Helicopter Technique2006(2): 19-24 (in Chinese).
6 唐正府, 张靖周, 单勇. 波瓣喷管-狭长出口弯曲混合管引射混合特性分析[J]. 航空动力学报200520(6): 978-982.
  TANG Z F, ZHANG J Z, SHAN Y. Investigation on ejecting and mixing characteristics of lobed nozzle with curved mixing duct and slot exit[J]. Journal of Aerospace Power200520(6): 978-982 (in Chinese).
7 唐正府, 张靖周, 王先炜, 等. 排气系统与尾机身一体化红外抑制器实验分析[J]. 航空动力学报200722(2): 233-237.
  TANG Z F, ZHANG J Z, WANG X W, et al. Experimental research on infrared suppressor integrating the exhaust system with the tail part of a helicopter[J]. Journal of Aerospace Power200722(2): 233-237 (in Chinese).
8 任利锋, 张靖周, 王先炜, 等. 直升机后机身内埋式红外抑制器隐身性能分析[J]. 红外与激光工程201140(11): 2091-2097.
  REN L F, ZHANG J Z, WANG X W, et al. Analysis of stealth properties on IR radiation suppressor embed inside helicopter rear airframe[J]. Infrared and Laser Engineering201140(11): 2091-2097 (in Chinese).
9 PAN C X, ZHANG J Z, SHAN Y. Modeling and analysis of helicopter thermal and infrared radiation[J]. Chinese Journal of Aeronautics201124(5): 558-567.
10 PAN C X, ZHANG J Z, SHAN Y. Effects of exhaust temperature on helicopter infrared signature[J]. Applied Thermal Engineering201351(1-2): 529-538.
11 蒋坤宏, 张靖周, 单勇, 等. 一体化红外抑制器遮挡和出口修型对后机身表面温度和红外辐射特性的影响[J]. 航空学报202041(2): 123497.
  JIANG K H, ZHANG J Z, SHAN Y, et al. Effects of sheltering and outlet shaping on surface temperature and infrared radiation characteristics of rear airframe with an integrating infrared suppressor[J]. Acta Aeronautica et Astronautica Sinica202041(2): 123497 (in Chinese).
12 郑禛, 张靖周. 导流片对大形状比出口弯曲混合管引射性能影响的数值研究[J]. 南京航空航天大学学报202052(4): 540-547.
  ZHENG Z, ZHANG J Z. Numerical study on effects of guide baffles on pumping performance of curved mixing duct with a large-aspect-ratio outlet[J]. Journal of Nanjing University of Aeronautics & Astronautics202052(4): 540-547 (in Chinese).
13 杨宗耀, 张靖周, 单勇. 一体化红外抑制器后机身狭缝进口布置对气流组织和红外辐射特性的影响[J]. 航空学报202142(7): 124445.
  YANG Z Y, ZHANG J Z, SHAN Y. Effects of slot-inlet arrangement at infrared-suppressor-integrated rear airframe on flow organization and infrared radiation characteristics[J]. Acta Aeronautica et Astronautica Sinica202142(7): 124445 (in Chinese).
14 ZHOU Z Y, HUANG J, WANG J J. Radar/infrared integrated stealth optimization design of helicopter engine intake and exhaust system[J]. Aerospace Science and Technology201995: 105483.
15 ZHOU Z Y, HUANG J, WU N N. Acoustic and radar integrated stealth design for ducted tail rotor based on comprehensive optimization method[J]. Aerospace Science and Technology201992: 244-257.
16 冉令可. 锯齿射流的数值模拟及空间稳定性分折[D]. 合肥: 中国科学技术大学, 2017.
  RAN L K. Numerical simulation and spatial stability analysis of chevron jet[D]. Hefei: University of Science and Technology of China, 2017 (in Chinese).
17 UZUN A, LYRINTZIS A, BLAISDELL G. Coupling of integral acoustics methods with LES for jet noise prediction: AIAA-2004-0517[R]. Reston: AIAA, 2004.
18 周志浩. 柴油发动机排气消声器的设计及其性能分析[D]. 上海: 上海应用技术学院, 2015.
  ZHOU Z H. The design and performance analysis of the diesel engine exhaust muffler[D]. Shanghai: Shanghai Institute of Applied Technology, 2015 (in Chinese).
19 International Civil Aviation Organization. Annex 16 Volume I 6th Edition-2011, International standards and recommended practices of aircraft noise [S]. Montreal: ICAO, 2011.
20 JORDAN P, GERVAIS Y, VALIERE J C, et al. Final results from single point measurements: Project deliverable D3.4-EU 5th framework programme[R]. Paris: JEAN, 2002.
21 ANDERSSON N, ERIKSSON L E, DAVIDSON L. Large-eddy simulation of subsonic turbulent jets and their radiated sound[J]. AIAA Journal200543(9): 1899-1912.
22 许聪, 刘琪麟, 赖焕新. 亚音速喷流出口扰动对湍流与声场模拟的影响[J]. 华东理工大学学报(自然科学版)202147(4): 510-518.
  XU C, LIU Q L, LAI H X. Effects of flow forcing on simulation of subsonic turbulent jet flow and noise[J]. Journal of East China University of Science and Technology202147(4): 510-518 (in Chinese).
23 M?SER M. Engineering acoustics: An introduction to noise control[M]. Berlin: Springer Science and Business Media, 2009.
24 HAN T, WANG L, CEN K, et al. Flow-induced noise analysis for natural gas manifolds using LES and FW-H hybrid method[J]. Applied Acoustics2020159: 107101.
25 蔡阳生. 最大声压级的定义及其测量[J]. 广州大学学报(自然科学版)20087(4): 43-46.
  CAI Y S. The definition and measurement of the maximum sound pressure level[J]. Journal of Guangzhou University (Natural Science Edition)20087(4): 43-46 (in Chinese).
26 陈苏麒, 单勇, 张靖周, 等. 挡板构型对直升机红外抑制器气动与红外辐射特性影响研究[J]. 红外与激光工程202251(8): 247-259.
  CHEN S Q, SHAN Y, ZHANG J Z, et al. Effect of baffle configuration on aerodynamic and infrared radiation characteristics of helicopter infrared suppressor[J]. Infrared and Laser Engineering202251(8): 247-259 (in Chinese).
27 YANG Z Y, ZHANG J Z, SHAN Y. Effects of forward-flight speed on plume flow and infrared radiation of IRS-integrating helicopter[J]. Chinese Journal of Aeronautics202235(3): 155-168.
28 YANG Z Y, ZHANG J Z, SHAN Y. Research on the influence of integrated infrared suppressor exhaust angle on exhaust plume and helicopter infrared radiation[J]. Aerospace Science and Technology2021118: 107013.
29 龙新平, 姚鑫, 杨雪龙. 多孔喷嘴射流泵流动模拟与涡结构分析[J]. 排灌机械工程学报201230(2): 136-140, 152.
  LONG X P, YAO X, YANG X L. Flow simulation and vortex structure analysis of multi-nozzle jet pumps[J]. Journal of Drainage and Irrigation Machinery Engineering201230(2): 136-140, 152 (in Chinese).
Outlines

/