摘要
在忽略流体黏性和附加质量,以及尾迹捕获效应的前提下,给出了一个将翅膀转动效应考虑在内的昆虫翅膀气动力估算模型.该模型将翅膀转动产生的线速度合成到拍动线速度上,利用Dickinson给出的升力和推力系数得到该点的气动力,对整个翅膀的气动力进行积分获得整个翅膀的气动力.采用Dickinson组的实验参数,分别进行了考虑转动效应和不考虑转动效应的仿真,并与Dickinson组的实验结果进行了比较.结果表明,考虑转动效应的模型在拍动末期产生的气动力明显高于无转动效应的模型,在时间和幅值上都与实验结果吻合得更好.
A simplified analytical aerodynamic model of insect flight considering the rotational effect was developed, which ignores the fluid viscosity, the added mass and the wake capture effect. The rotational velocity was combined into the local translational velocity, and the aerodynamic force on this point was calculated using the drag and lift parameters given by Dickinson, thus the total forces on the wing could be calculated by integral. With the parameters used in Dickinson＇s experiments, the translational only model and the model with rotational effect were simulated respectively. At the end of each half stroke, the aerodynamic forces in the model with rotational effect were much greater than those in translational only model, and matched the experimental results better both in timing and amplitude.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2008年第4期715-719,共5页
Journal of Zhejiang University：Engineering Science
基金
浙江省重中之重中国计量学院仪器科学与技术实验室开放基金资助项目
关键词
昆虫
转动
气动力模型
仿生
微飞行器
insect
rotation
aerodynamic force model
bionics
micro-aero-vehicle
