Hydrodynamic performance analysis of pitching and heaving coupling motion for two dimensional oscillating airfoil

被引：0
|
作者：
Xu P. [1 ]
Guo C.-Y. [1 ]
Wang C. [1 ]
Cao X.-X. [2 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
[2] Advance Institute of Engineering Science for Intelligent Manufacturing, Guangzhou University, Guangzhou
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2020年 / 24卷 / 03期
关键词：
Airfoil; Oscillation frequency; The coupling of pitching and heaving; The hydrodynamic performance;
D O I：
10.3969/j.issn.1007-7294.2020.03.001
中图分类号：
学科分类号：
摘要：
In order to analyze the hydrodynamic performance of the two dimensional airfoil in the unsteady state of the pitching and heaving coupling motion, based on the RANS method, the difference between the coupled motion and the single motion of the airfoil as well as the influence of the different oscillation frequencies on the lift, resistance and vortex in the coupled motion of the airfoil are analyzed by using the overlapping grid technique and taking the NACA 0020 airfoil as the research object. The results show that when the two-dimensional airfoil performs a coupling motion, the smaller the oscillation frequency is, the greater the pitching motion effect is than the heaving motion effect, and the larger the oscillation frequency is, the stronger the heaving motion effect is. When the airfoil oscillation frequency becomes larger, both the separation of the vortex on the airfoil and the stall of the airfoil tend to be later. With the range of the exfoliate vortex becoming wider, the lift and drag coefficients of the airfoil become larger. © 2020, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：271 / 281
页数：10
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