|
|
论文:2022,Vol:40,Issue(2):243-252 |
|
|
引用本文： |
|
|
李旭, 周洲, 郭佳豪, 薛臣. 二维射流中翼型气动特性计算与分析[J]. 西北工业大学学报 |
|
|
LI Xu, ZHOU Zhou, GUO Jiahao, XUE Chen. Calculation and analysis of aerodynamic characteristics for airfoils immersed in two-dimensional jet flow[J]. Northwestern polytechnical university |
|
|
|
|
|
|
|
| 二维射流中翼型气动特性计算与分析 |
|
| 李旭, 周洲, 郭佳豪, 薛臣 |
|
| 西北工业大学 航空学院, 陕西 西安 710072 |
| 摘要: |
| 为研究射流与翼型间的相互作用，将自由流线模型与面元法结合，建立了二维无黏射流中翼型气动特性的计算方法。利用总压差不变假设和自由流线模型确定射流边界的涡强和位置，翼型的气动力采用涡面元进行计算，整个过程进行松弛迭代求解。对所提计算方法的理论进行了介绍，并对其收敛性和有效性进行了验证;研究了翼型在射流中上下位置、射流宽度与翼型弦长比值对翼型气动力的影响;利用动量理论对射流中翼型的受力特性进行了分析。结果表明:翼型在射流中的气动特性与自由来流中差别较大，当翼型引起射流偏转时，翼型不仅会受到升力，还会受到阻力。文中所提方法可用于二维射流中翼型气动力的计算。 |
| 关键词:
翼型
自由流线
射流
动力增升
气动特性
动量理论
|
|
| Calculation and analysis of aerodynamic characteristics for airfoils immersed in two-dimensional jet flow |
|
| LI Xu, ZHOU Zhou, GUO Jiahao, XUE Chen |
|
| School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| In order to study the aerodynamic interaction of the airfoil and jet flow, the free streamline model and the panel method are combined to establish a calculation method for the aerodynamic characteristics of the airfoil in a two-dimensional inviscid jet flow. Using the assumption of constant total pressure difference and free streamline model to determine the vortex strength and position of the jet boundary, the aerodynamic force of the airfoil is solved by the vortex panel method, and the whole process is calculated by relaxation iteration. Firstly, the relevant theory in this paper is introduced, and the convergence and effectiveness of the present method are also tested. Next, the influence of the position and the ratio of jet height to airfoil chord on airfoil aerodynamics in the jet flow are studied. Finally, the momentum theory is used to analyze the aerodynamic characteristics of the airfoil in the jet flow. The results show that the aerodynamic characteristics of the airfoil in the jet flow is quite different from that in the freestream. When the jet flow is deflected, the airfoil will not only generate lift but also drag. The method in this paper can be used to study the aerodynamic characteristics of the airfoil immersed in the jet flow. |
| Key words:
airfoil
free streamline
jet flow
powered lift
aerodynamic characteristics
momentum theory
|
|
| 收稿日期: 2021-06-18
修回日期:
|
| DOI: 10.1051/jnwpu/20224020243 |
| 基金项目: 陕西省重点研发计划（2021ZDLGY09-08）与陕西省自然科学基础研究计划（2022JQ-060）资助 |
| 通讯作者: 周洲(1966-),女,西北工业大学教授,主要从事无人机系统总体研究。e-mail:zhouzhou@nwpu.edu.cn
Email：zhouzhou@nwpu.edu.cn |
| 作者简介: 李旭(1993-),西北工业大学博士研究生,主要从事飞行器设计研究。
|
|
| 相关功能 |
|
|
|
|
| 作者相关文章 |
|
| 李旭 在本刊中的所有文章 |
| 周洲 在本刊中的所有文章 |
| 郭佳豪 在本刊中的所有文章 |
| 薛臣 在本刊中的所有文章 |
|
|
|
|
|
|
|
|
参考文献: |
|
|
[1] RICHARD E Kuhn, JOHN W Draper. An investigation of a wing-propeller configuration employing large-chord plain flaps and large-diameter propellers for low-speed flight and vertical take-off[R]. NACA-3307, 1954
[2] FALARSKI M D, MORT K W. Large-scale wind-tunnel investigation of a ducted-fan-deflected-slipstream model with an auxiliary wing[R]. NASA-6323, 1971
[3] 龚志斌, 李杰, 蒋胜矩, 等. 发动机位置对大型运输机动力增升效能的影响研究[J]. 西北工业大学学报, 2015, 33(4):560-565 GONG Zhibin, LI Jie, JIANG Shengju, et al. Numerical investigation of the engine positions on powered high-lift effects for large transport aircraft[J]. Journal of Northwestern Polytechnical University, 2015, 33(4):560-565 (in Chinese)
[4] 杨小川, 王运涛, 孟德虹, 等. 不同分布式螺旋桨转向组合下的机翼滑流效应研究[J]. 空气动力学报, 2019, 37(1):89-98 YANG Xiaochuan, WANG Yuntao, MENG Dehong, et al. Study on wing slipstream effects of distributed propellers with different rotating directions[J]. Acta Aerodynamica Sinica, 2019, 37(1):89-98 (in Chinese)
[5] COLE J A, MAUGHMER M D, MICHAEL K, et al. Higher-order free-wake method for propeller-wing systems[J]. Journal of Aircraft, 2019:56(1):1-16
[6] VELDHUIS L M. Propeller wing aerodynamic interference[D]. Delft:Technische Universiteit Delft, 2005:353-364
[7] HUNSAKER D, SNYDER D. A lifting-line approach to estimating propeller/wing interactions[C]//AIAA Applied Aerodyna-mics Conference, 2006
[8] 张声伟, 王伟. 外吹式襟翼动力增升效果评估方法[J]. 航空学报,2017,38(6):220689 ZHANG Shengwei, WANG Wei. Method for evaluating powered high-lift effects of externally blown flap[J]. Acta Aeronautica et Astronautica Sinica, 2017, 38(6):220689 (in Chinese)
[9] SHOLLENBERGER C A. Analysis of the interaction of jets and airfoils in two dimensions[J]. Journal of Aircraft, 1973, 10(5):267-273
[10] SHOLLENBERGER C A. An investigation of a two-dimensional propulsive lifting system[R]. NASA-2250, 1973
[11] LEWIS R I. Vortex element methods for fluid dynamic analysis of engineering systems[M]. Cambridge:Cambridge University Press, 1991
[12] BONTEMPO R, MANNA M. A ring-vortex free-wake model for uniformly loaded propellers. Part II-Solution procedure and analysis of the results[J]. Energy Procedia, 2018(148):368-375
[13] 董志勇. 射流力学[M]. 北京:科学出版社,2005 DONG Zhiyong. Mechanics of jet[M]. Beijing:Science Press, 2005 (in Chinese)
[14] KATZ J, PLOTKIN A. Low speed aerodynamics[M]. Cambridge:Cambridge University Press, 2001
[15] BAI Chengyuan, WU Ziniu. Generalized Kutta-Joukowski theorem for multi-vortices and multi-airfoil flow(lumped vortex model)[J]. Chinese Journal of Aeronautics, 2014, 27(1):34-39 |
|
|
|
相关文献: |
|
|
1．王年华, 赵旭, 李晓东, 郭汉青.上凸下凹前后对称翼型低速气动特性研究[J]. 西北工业大学学报, 2014,32(3): 341-345 |
|
|
|
|
|
|
