%0 Journal Article
%T Theoretical Modeling Study on the Aerodynamic Effects of Dragonfly Flexible Wing in Forward Flapping Flight<br>蜻蜓拍翼前飞中模型翼动态柔性变形的气动效应研究
%A XU Ming
%A YU Yong-Liang
%A BAO Lin
%A <br>徐明
%A 余永亮
%A 鲍麟
%J 中国科学院研究生院学报
%D 2006
%I 
%X Theoretical modeling is effective to study the flow aroused by wings of dragonfly in flapping flight, which is highly unsteady, i.e., characterized as St>>1/Re. The aerodynamic effects of a model wing with time-changing deformation during cyclic wing beats in dragonfly forward flight are investigated, using two-dimensional panel method. In this study, the dragonfly wing is modeled as a two-dimensional deformable plate, and the panel method is improved to deal with vortex shedding from both leading- and trailing- edges of the plate. Results show that lift is enhanced greatly during down-stroke stage of the flexible wing, compared with that in the rigid case, and the actual amplitude of the wing deformation is contributive to reduce the mean aerodynamic power and enhance lift, which means a longer-time forward flight is available.
%K dragonfly flexible wing
%K forward flapping flight
%K time-changing deformation
%K aerodynamic effects
%K theoretical modeling<br>模型蜻蜓翼
%K 拍翼前飞
%K 动态柔性变形
%K 气动效应
%K 理论模化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=67CDFDECD959936E166E0F72DE972847&aid=F1DDFBDFB498F0C6&yid=37904DC365DD7266&vid=EA389574707BDED3&iid=B31275AF3241DB2D&sid=B3AAD7DC3C912B50&eid=B60458D1AE87BCD1&journal_id=1002-1175&journal_name=中国科学院研究生院学报&referenced_num=0&reference_num=23