Numerical Investigation of the Low-Frequency Flow Oscillation over NACA-0012 Aerofoil

2016 2nd International Conference on Mechanical and Aeronautical Engineering (ICMAE 2016)

机械制造;航空航天工程

Elawad, Yasir A.^1 ; ElJack, Eltayeb M.^1

Aeronautical Engineering Department, King AbdulAziz University, Jeddah, Saudi Arabia^1

关键词: Aerodynamic coefficients;    Flow oscillations;    Laminar separation bubble;    Low-frequency;    Near stall conditions;    Numerical investigations;    Qualitative study;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/187/1/012008/pdf
DOI  :  10.1088/1757-899X/187/1/012008

学科分类：航空航天科学

来源: IOP

【 摘 要 】

The present study investigates the low-frequency flow oscillation phenomenon near stall conditions for NACA0012 aerofoil at Reynolds number of 9 104, Mach number of and angle of attack of 11.0 The phenomenon is clearly captured in the time histories of aerodynamic coefficients. Statistical and spectral analysis are carried out for time histories of aerodynamic coefficients. Qualitative study is performed to investigate the unsteady behaviour of laminar separation bubble over one low-frequency cycle.