Effect of attack angle on stability and transition in a swept-wing boundary layer

被引：0

作者：

Jing, Zhenrong ^{[1
]}

Sun, Pengpeng ^{[1
]}

Huang, Zhangfeng ^{[1
,2
]}

机构：

[1] Department of Mechanics, Tianjin University, Tianjin

[2] State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang

来源：

Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2015年 / 41卷 / 11期

关键词：

Attack angle; eN method; Hydrodynamic stability; Swept-wing; Transition;

D O I：

10.13700/j.bh.1001-5965.2014.0769

中图分类号：

学科分类号：

摘要：

Attack angle is one of the key parameters to the cross-flow instability of swept-wing boundary layers. For swept NACA0012 airfoil with infinite spanwise length, the basic flow field was calculated by solving the three-dimensional compressible Navier-Stokes equations numerically, the neutral curve and the evolution curve of growth rate were obtained by solving the Orr-Sommerfeld equation, the effect of attack angle on the cross-flow stability was analyzed by linear stability theory (LST), and the transition position was predicted by eN method. It is found that, the growth of unstable waves in the leeward is inhibited but enhanced in the windward. Transition firstly occurs in the windward, and the transition position predicted by eN method is about 0.1 to 0.2 of the chord length with the N factor of about 6 when the disturbance velocity is 0.05% of the free-stream velocity. © 2015, Beijing University of Aeronautics and Astronautics (BUAA). All right reserved.

引用

页码：2177 / 2183

页数：6

共 19 条

[1]

Joslin R.D., Overview of Laminar Flow Control, (1998)

[2]

Zhou H., Zhao G.F., Hydrodynamic Stability, pp. 157-158, (2004)

[3]

Wu Y.J., Experimental study on crossflow instabilities in the boundary-layer of swept wing, (2002)

[4]

Boltz F.W., Kenyon G.C., Allen C.Q., Effects of sweep angle on the boundary-layer stability characteristics of an untapered wing at low speeds, Technical Note: D-338, (1960)

[5]

Haynes T.S., Nonlinear stability and saturation of crossflow vortices in swept-wing boundary layers, (1996)

[6]

Dagenhart J.R., Saric W.S., Crossflow stability and transition experiments in swept-wing flow, (1999)

[7]

Reibert M.S., Saric W.S., Review of swept-wing transition, AIAA-1997-1816, (1997)

[8]

Bushnell D.M., Malik M.R., Harvey W.D., Transition prediction in external flows via linear stability theory, Symposium Transsonicum III, (1988)

[9]

Arnal D., Gasparian G., Salinas H., Recent advances in theoretical methods for laminar-turbulent transition prediction, (1998)

[10]

Sun P.P., Huang Z.F., Effect of the sweep angle on the stability and transition in a swept-wing boundary layer, Journal of Beijing University of Aeronautics and Astronautics, 41, 7, pp. 1313-1321, (2015)

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