Optimization Design of Blunt Trailing-edge Airfoil under Conditions of Rough Blades

被引：3
|
作者：
Zhang X. [1 ,2 ]
Zhang M. [1 ]
Wang G. [1 ]
Li W. [2 ,3 ]
Ruan J. [1 ]
机构：
[1] Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin Polytechnic University, Tianjin
[2] State Key Laboratory of Building Safety and Built Environment, Beijing
[3] School of Energy and Safety Engineering, Tianjin Institute of Urban Construction, Tianjin
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2019年 / 30卷 / 06期
关键词：
Airfoil; Blunt trailing-edge modification; Optimization design; Rough;
D O I：
10.3969/j.issn.1004-132X.2019.06.015
中图分类号：
学科分类号：
摘要：
Optimization design of blunt trailing-edge airfoil profiles was carried out by using particle swarm optimization algorithm coupling with the software XFOIL. A lug boss with the height of 0. 015c (c is chord) and the width of 0.04c was added on the optimized airfoils through translating the suction surface coordinates on the position of 0.1c away from the leading-edge, and the blunt trailing-edge modification of rough airfoils was obtained. Lift and drag coefficients, lift-drag ratios, pressure coefficients, and flow characteristics before and after blunt trailing-edge optimization were investigated numerically. The results indicate that after blunt trailing-edge optimization of rough S812 airfoil, the trailing-edge thickness is as 0.039 8c, and the thickness distribution ratio is as 1: 13.16. The lift coefficient within calculating angle and lift-drag ratio before the attack angle of 17.2° increase remarkably, and the maximum lift-drag ratio is significantly increased. The vertex at airfoil's blunt trailing-edge causes the downwash effects on the airflow of suction surfaces. © 2019, China Mechanical Engineering Magazine Office. All right reserved.
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页码：728 / 734
页数：6
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