Research of the suction flow control on wings at low Reynolds numbers

被引：11
|
作者：
Ma, Dongli [1 ]
Li, Guanxiong [1 ]
Yang, Muqing [1 ]
Wang, Shaoqi [1 ]
机构：
[1] Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING | 2018年 / 232卷 / 08期
关键词：
Flow control; suction; low Reynolds number; water tunnel test; numerical calculation; BOUNDARY-LAYER; OPTIMIZATION; AIRFOIL;
D O I：
10.1177/0954410017694057
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Laminar separation and transition have significant effects on aerodynamic characteristics of the wing under the condition of low Reynolds numbers. Using the flow control methods to delay and eliminate laminar separation has great significance. This study uses the method combined with water tunnel test and numerical calculation to research the effects of suction flow control on the flow state and aerodynamic force of the wing at low Reynolds numbers. The effects of suction flow rate and suction location on laminar separation, transition and aerodynamic performance of the wing are further researched. The results of the research show that, the suction can control laminar separation and transition effectively, when the suction holes are in the interior of the separation bubble, and close to the separation point, the suction has the best control effect. When the Reynolds number is Re=3.0x10(5), the suction flow control can make the lift-to-drag ratio of the wing increase by 8.62%, and the aerodynamic characteristics of the wing are improved effectively.
引用
收藏
页码：1515 / 1528
页数：14
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