期刊
JOURNAL OF BIONIC ENGINEERING
卷 7, 期 1, 页码 87-94出版社
SCIENCE PRESS
DOI: 10.1016/S1672-6529(09)60196-7
关键词
flapping wing; chord flexure; Navier-Stoke computation; grid deformation; optimal phase angle; propulsive efficiency
资金
- National Research Laboratory program
- Korea Science and Engineering Foundation [R0A-2007-000-20012-0]
- National Research Foundation of Korea [2009-00288, 과C6A2401, 2007-0056790] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Inspired by the fact that a high flexible wing in nature generates high aerodynamic performance, we investigated the aerodynamic performance of the flapping wing with different chord flexures. The unsteady, incompressible, and viscous flow over airfoil NACA0012 in a plunge motion was analyzed by using Navier-Stokes equation. Grid deformation, in which finite element and interpolation ideas are mixed, was introduced for computing large grid deformation caused by the chord flexures. We explored the optimal phase angle for thrust force and propulsive efficiency by varying the chord flexure from 0.05 to 0.7 when reduced frequency and plunge amplitude were fixed. Throughout parametric study on the phase angle and chord flexure amplitude, the maximum thrust force is achieved near at 0 degrees in all given conditions, meanwhile, it is found that the optimal phase angle has dependency of chord flexure amplitude, which achieves higher aerodynamic performance compared to previous studies. These findings will provide a useful guideline for determining wing flexibility in design of a bio-mimetic air vehicle.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据