无轴涵道旋翼气动特性数值研究

申遂愿; 朱清华; 曾嘉楠; 王坤; 陈建炜

doi:10.13224/j.cnki.jasp.2019.09.025

无轴涵道旋翼气动特性数值研究

doi: 10.13224/j.cnki.jasp.2019.09.025

南京航空航天大学直升机旋翼动力学国家级重点实验室,南京 210016

基金项目: 国防科技重点实验室基金（6142220180511）；江苏高校优势学科建设工程基金

计量
- 文章访问数: 623
- HTML浏览量: 2
- PDF量: 558
- 被引次数: 0
出版历程
- 收稿日期: 2019-04-03
- 刊出日期: 2019-09-28

Numerical research on aerodynamic characteristics of shaftless ducted rotor

摘要

摘要: 采用基于非结构网格的滑移网格技术对无轴涵道旋翼与传统涵道旋翼的气动特性进行了非定常Euler方程数值模拟。分别考察了无轴涵道旋翼与传统涵道旋翼气动特性差异,中心孔径、涵道扩散角、涵道翼型对无轴涵道旋翼气动特性的影响。涵道扩散角变化范围为-6°~10°,涵道翼型选择NACA66、NACA0018及NACA4415三种翼型进行研究。研究发现:涵道翼型类型对无轴涵道旋翼的拉力分配影响较大,对称翼型能减弱旋翼上方低压涡从而涵道能产生更大的拉力；无轴涵道旋翼比传统涵道旋翼具有更优的拉力性能,转速为18 000 r/min时其总拉力是后者的1.185倍；减小无轴涵道旋翼的中心孔径能提高总拉力值,但整体耗能也将随之提高；涵道拉力占比越高的翼型,其最佳涵道扩散角越大,该状态下涵道拉力占比最高。
- 滑移网格 /
- 无轴涵道旋翼 /
- 涵道旋翼 /
- Euler方程 /
- 中心孔径 /
- 涵道扩散角 /
- 涵道翼型
Abstract: The unsteady Euler equations for the aerodynamic characteristics of shaftless and traditional ducted rotors were numerically simulated by using the sliding mesh technique based on unstructured meshes. The difference of aerodynamic characteristics between shaftless ducted rotor and traditional ducted rotor was investigated. The effects of center aperture, ducted diffusion angle and ducted airfoil on the aerodynamic characteristics of ducted shaftless rotor were studied. The divergence angle of the ducted rotor ranged from -6°—10°. The ducted airfoils were NACA66, NACA0018 and NACA4415. It was found that the type of ducted airfoil had a great influence on the tension distribution of the shaftless ducted rotor, and the symmetrical airfoil can weaken the low-pressure vortices above the rotor so that the ducted rotor can produce greater tension; the shaftless ducted rotor had better tension performance than the traditional ducted rotor, and its total tension was 1.185 times of the latter when the rotational speed was 18 000 r/min; reducing the central aperture of the shaftless ducted rotor can improve the total tension value, however, the overall energy consumption also increased; the higher proportion of ducted tension means the larger optimal ducted diffusion angle, and the highest proportion of ducted tension in this state.
- sliding mesh /
- shaftless ducted rotor /
- ducted rotor /
- Euler equations /
- center aperture /
- ducted diffusion angle /
- ducted airfoil

HTML

参考文献(19)

[1]	许和勇,叶正寅.涵道螺旋桨与孤立螺旋桨气动特性的数值模拟对比［J］.航空动力学报,2011,26(12):2820-2825.XU Heyong,YE Zhengyin.Numerical simulation and comparison of aerodynamic characteristics between ducted and isolated propellers［J］.Journal of Aerospace Power,2011,26(12):2820-2825.(in Chinese)
[2]	PEREIRA J L.Hover and wind-tunnel testing of shrouded rotors for improved micro air vehicle design［D］.City of College Part,MD:University of Maryland,2008.
[3]	PEREIRA J L,CHOPRA I.Hover test of micro aerial vehicle-scale shrouded rotors:Part Ⅰ performance characteristics［J］.Journal of American Helicopter Society, 2009,54(1):012001.1-012001.28.
[4]	蔡红明,昂海松,段文博.一种新型涵道飞行器的设计与气动特性研究［J］.兵工学报,2012,33(7):857-863.CAI Hongming,ANG Haisong,DUAN Wenbo.Design of a new ducted fan aircraft and its aerodynamic characteristic research［J］.Acta Armamentarii,2012,33(7):857-863.(in Chinese)
[5]	范瑶,朱清华.新型涵道四旋翼飞行器总体/飞控一体化设计［J］.南京航空航天大学学报,2017,49(2):231-238.FAN Yao,ZHU Qinghua.General layout/flight control integrated design for novel ducted quadrotor aircraft［J］.Journal of Nanjing University of Aeronautics and Astronautics,2017,49(2):231-238.(in Chinese)
[6]	姜悦宁.涵道共轴双旋翼无人机气动外形关键技术研究［D］.长春:中国科学院大学(中国科学院长春光学精密机械与物理研究所),2017.JIANG Yuening.Key technology research on aerodynamic shape of ducted co-axial rotor UAV［D］.Changchun:Changchun Institute of Optics,Fine Mechanics and Physics Chinese Academy of Sciences,2017.(in Chinese)
[7]	许和勇,叶正寅.基于非结构嵌套网格的涵道螺旋桨数值模拟［J］.空气动力学学报,2013,31(3):306-309.XU Heyong,YE Zhengyin.Numerical simulation of ducted-propeller system using unstructured overset grids［J］.Acta Aerodynamica Sinica,2013,31(3):306-309.(in Chinese)
[8]	徐嘉,范宁军,赵澍.涵道飞行器涵道本体气动特性研究［J］.弹箭与制导学报,2009,29(4):174-178.XU Jia,FAN Ningjun,ZHAO Shu.The study on aerodynamic characteristics of duct body of ducted fan aircraft［J］.Journal of Projectiles,Rockets,Missiles and Guidance,2009,29(4):174-178.(in Chinese)
[9]	叶坤,叶正寅,屈展.涵道气动优化设计方法［J］.航空动力学报,2013,28(8):1828-1835.YE Kun,YE Zhengyin,QU Zhan.Aerodynamic optimization method for duct design［J］.Journal of Aerospace Power,2013,28(8):1828-1835.(in Chinese)
[10]	苏运德,叶正寅,许和勇.桨尖间隙和双桨间距对涵道螺旋桨气动性能的影响［J］.航空动力学报,2014,29(6):1468-1475.SU Yunde,YE Zhengyin,XU Heyong.Influence of tip clearance and propeller separation space on aerodynamic performance of ducted propeller［J］.Journal of Aerospace Power,2014,29(6):1468-1475.(in Chinese)
[11]	MARTIN P,TUNG C.Performance and flofield measurements on a 10-inch ducted rotor VTOL UAV［C］∥Proceedings of the 60th Annual Forum of the American Helicopter Society.Baltimore:American Helicopter Society,2004:88-107.
[12]	武楚利,刘前智,胡春波.航空叶片机原理［M］.西安:西北工业大学出版社,2009.
[13]	WU Yanhui,CHU Wuli,ZHANG Yanfeng,et al.The influence of tip clearance size on axial compressor rotor aerodynamics［R］.AIAA-2008-0085,2008.
[14]	谈微中,严新平,刘正林,等.无轴轮缘推进系统的研究现状与展望［J］.武汉理工大学学报(交通科学与工程版),2015,39(3):601-605.TAN Weizhong,YAN Xinping,LIU Zhenglin,et al.Technology development and prospect of shaftless rim-driven propulsion system［J］.Journal of Wuhan University of Technology(Transportation Science & Engineering),2015,39(3):601-605.(in Chinese)
[15]	汪勇,李庆.新型集成电机推进器设计研究［J］.中国舰船研究,2011,6(1):82-85.WANG Yong,LI Qing.Design of a new integrated motor propulsion system［J］.Chinese Journal of Ship Research,2011,6(1):82-85.(in Chinese)
[16]	于志民,王仁忠,孟相全.基于无动力推进与无轴轮缘推进联合的水下探测器设计［J］.舰船科学技术,2017,39(23):26-29.YU Zhimin,WANG Renzhong,MENG Xiangquan.Design of underwater detector based on unpowered propulsion and shaftless rim-driven propulsion［J］.Ship Science and Technology,2017,39(23):26-29.(in Chinese)
[17]	谈炜荣.直升机涵道尾桨气动特性的CFD分析［D］.南京:南京航空航天大学,2008.TAN Weirong.Analysis on aerodynamic characteristics of helicopter ducted tail rotor using CFD［D］.Nanjing:Nanjing University of Aeronautics and Astronautics,2008.(in Chinese)
[18]	BOURTSEV B N,SELEMENEV S V.Fan-in-Fin performance at hover computational method［R］.Hague:the 26th European Rotorcraft Forum,2000.
[19]	李彬.高速型无人涵道旋翼飞行器总体设计技术研究［D］.南京:南京航空航天大学,2012.LI Bin.Research on technologies of high-speed ducted-rotor UAV preliminary design［D］.Nanjing:Nanjing University of Aeronautics and Astronautics,2012.(in Chinese)