Influence of Bevel Section on Flow Characteristics of Double Serpentine Nozzle with Bevel

被引:0
|
作者
Jiao, Liying [1 ]
Zhou, Li [1 ]
Wang, Zhanxue [1 ]
Shi, Jingwei [1 ]
机构
[1] Northwestern Polytech Univ, Sch Power & Energy, 1 Dongxiang Rd, Xian 710129, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1109/AERO55745.2023.10115549
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
In order to improve fighters' stealth ability and reach an integrated design of the outer fuselage and nozzle, a double serpentine nozzle can be scarfed at the tail according to the aircraft's skin. But the jet flow of the exhaust system is deflected when a nozzle is beveled, which makes the thrust line not completely coincide with the aircraft axis. Different degrees of thrust line cause corresponding deflection torque, which affects the aerodynamics layout of the aircraft and causes difficulties in aircraft control. In this paper, a double serpentine nozzle with bevel which consists of a first bend section, second bend section, and bevel section is taken as the baseline to study the influence of geometric parameters of the double serpentine nozzle with bevel on flow characteristics. Two parameters of the bevel section, angle, and length, were selected to research. Seven nozzles with different deflection angles of the bevel section were numerically simulated. Results show that the aerodynamic parameters of those nozzles are slightly different. The thrust line deflects in the same direction as the changed deflection direction of the bevel section, but the deflection amplitude of the thrust line is significantly smaller than the deflection amplitude of the bevel section. And when deflecting one direction (Y/Z) actively, the other direction (Z/Y) will have the opposite effect. The change of the bevel section deflection angle has a greater impact on the thrust line. Six nozzles with different lengths of the bevel section were selected. Numerical results show that as the length increases, the friction resistance of nozzles increases, and the loss increases. With the increase in the length of the bevel section, the angle between the thrust line and the vertical plane XY is gradually decreasing, so the thrust line deflects close to the bevel section axis. For the angle with the horizontal plane XZ, the thrust line deflects upward when the bevel section lengthens by 7%; then when the length of the bevel section continues to increase, the thrust line deflects downward. The average angle variation in each direction is about 0.1 degrees when the length increases by 7%. In this paper, four flight conditions including subsonic and, supersonic jet conditions are studied. Flight conditions heavily influence the thrust line of the double serpentine nozzle with bevel.
引用
收藏
页数:10
相关论文
共 50 条
  • [21] Experimental and computational investigation of double serpentine nozzle
    Sun, Xiao-lin
    Wang, Zhan-xue
    Zhou, Li
    Shi, Jing-wei
    Liu, Zeng-wen
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 2015, 229 (11) : 2035 - 2050
  • [22] Stress calculation on bevel gears with FEM influence vectors
    Mieth, Frederik
    Ulrich, Carsten
    Schlecht, Berthold
    FORSCHUNG IM INGENIEURWESEN-ENGINEERING RESEARCH, 2022, 86 (03): : 491 - 501
  • [23] Characteristics of Flow Field and IR of Double Serpentine Nozzle Plume for Varying Cross Sectional Areas and Flight Conditions in UCAV
    Lee, Yu-Ryeol
    Lee, Ji-Won
    Shin, Chang-Min
    Myong, Rho-Shin
    JOURNAL OF THE KOREAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2021, 49 (08) : 689 - 698
  • [24] Influence of Gear-Shaft-Bearing Configurations on Vibration Characteristics of Spiral Bevel Gear Drives
    Hua, Xia
    Qiang, Sheng
    Hang, Wei
    SAE INTERNATIONAL JOURNAL OF VEHICLE DYNAMICS STABILITY AND NVH, 2020, 4 (03): : 275 - 289
  • [25] Numerical investigation into the effects of aft deck angle on the flow characteristics of a serpentine nozzle
    Jiao, Liying
    Zhou, Li
    Shi, Jingwei
    Wang, Zhanxue
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 2024, 238 (16) : 1604 - 1623
  • [26] Influence of geometric parameters on aerodynamic characteristics of serpentine convergent-divergent nozzle
    Wei, Xin
    Shi, Xiaojuan
    Ji, Honghu
    CHINESE JOURNAL OF AERONAUTICS, 2025, 38 (04)
  • [27] STUDY ON THE INFLUENCE OF FILM COOLING ON THE FLOW FIELD AND INFRARED RADIATION CHARACTERISTICS IN THE DIVERGENT SECTION OF A NOZZLE
    Yang, Haoqi
    Yang, Qingzhen
    Zhang, Saile
    Yang, Huicheng
    He, Yubo
    PROCEEDINGS OF THE ASME TURBO EXPO 2020: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, VOL 1, 2020,
  • [28] Study on nonlinear vibration characteristics of spiral bevel transmission system
    Wang, Lihua
    Huang, Yayu
    Li, Runfang
    Lin, Tengjiao
    Zhongguo Jixie Gongcheng/China Mechanical Engineering, 2007, 18 (03): : 260 - 264
  • [29] Influence of cutter diameter on meshing performance in spiral bevel gears
    Zhi-hao Ma
    Xing-hui Han
    Lin Hua
    Xiao-shuang Xiong
    Fang-yan Zheng
    Journal of Central South University, 2016, 23 : 102 - 111
  • [30] Influence of cutter diameter on meshing performance in spiral bevel gears
    Ma Zhi-hao
    Han Xing-hui
    Hua Lin
    Xiong Xiao-shuang
    Zheng Fang-yan
    JOURNAL OF CENTRAL SOUTH UNIVERSITY, 2016, 23 (01) : 102 - 111