中国科学院力学研究所机构知识库
Advanced  
IMECH-IR  > 力学所知识产出(1956-2008)  > 会议论文
Title:
Aerodynamic Performance of a Corrugated Dragonfly Airfoil Compared with Smooth Airfoils at Low Reynolds Numbers
Author: Tama M; Wang ZJ; Rajagopalan G; Hu H; He GW(何国威)
Issued Date: 2007
Conference Name: 45th AIAA Aerospace Sciences Meeting and Exhibit
Conference Date: 2007-1-8~2007-1-11
Conference Place: Reno, Nevada
Abstract: An experimental study was conducted to investigate the flow behavior around a corrugated dragonfly airfoil compared with a traditional, streamlined airfoil and a flat plate. The experimental study was conducted at the chord Reynolds number of ReC =34,000, i.e.,  
the regime where Micro-Air-Vehicles (MAV) usually operate, to explore the potential applications of such bio-inspired airfoils for MAV designs. The measurement results demonstrated clearly that the corrugated dragonfly airfoil has much better performance over the streamlined airfoil and the flat plate in preventing large-scale flow separation and airfoil stall at the test low Reynolds number level. The detailed PIV measurements near the noses of the airfoils elucidated underlying physics about why the corrugated dragonfly airfoil could suppress flow separation and airfoil stall at low Reynolds numbers: Instead of having laminar separation, the protruding corners of the corrugated dragonfly airfoil were  found to be acting as “turbulators” to generate unsteady vortices to promote the transition  of the boundary layer from laminar to turbulent rapidly. The unsteady vortex structures  trapped in the valleys of the corrugated cross section could pump high-speed fluid from  outside to near wall regions to provide sufficient energy for the boundary layer to overcome the adverse pressure gradient, thus, discourage flow separations and airfoil stall.
Indexed Type: EI
Source: AIAA-2007-483
Language: 英语
Content Type: 会议论文
URI: http://dspace.imech.ac.cn/handle/311007/44610
Appears in Collections:力学所知识产出(1956-2008)_会议论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
AIAA-2007-0483.pdf(4409KB)会议论文--开放获取View Download

Recommended Citation:
Tama M,Wang ZJ,Rajagopalan G,et al. Aerodynamic Performance of a Corrugated Dragonfly Airfoil Compared with Smooth Airfoils at Low Reynolds Numbers[C]. 见:45th AIAA Aerospace Sciences Meeting and Exhibit. Reno, Nevada. 2007-1-8~2007-1-11
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Tama M]'s Articles
[Wang ZJ]'s Articles
[Rajagopalan G]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Tama M]‘s Articles
[Wang ZJ]‘s Articles
[Rajagopalan G]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: AIAA-2007-0483.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院力学研究所 - Feedback
Powered by CSpace