Stream Surface Theory of Bird-like Flapping Flight

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	Stream Surface Theory of Bird-like Flapping Flight
	Wang Huishe; Zhu Junqiang
刊名	JOURNAL OF THERMAL SCIENCE
	2015-09-01
卷号	24 期号:5 页码:417-426
关键词	flapping flight turbomachinery stream surface non-orthogonal curvilinear coordinate system wing flexibility
英文摘要	Through analyzing the motion characteristics of bird-like flapping flight, it is considered that the wing angular acceleration is equal to zero at the point of maximum angular speed. Thus, the flapping flight is equivalent to a uniform rotating motion which can be analyzed by using the stream surface theory of turbomachinery during a micro period of time. In this article, the N-S equations of the motion are expanded in a non-orthogonal curvilinear coordinate system, and simplified on stream surfaces of the flapping flight model. By using stream function method, the three-dimensional unsteady flow equations are simplified as a two-order partial differential equation with variable coefficients eventually and the equation's iterative solving method on Si and S2 stream surfaces of the flapping flight model is presented. Through expanding the relatively steady equations of flapping flight at an arbitrary time point of a stroke on meridional plane of the flapping flight model, it can use a relatively steady motion to approximate the real flapping flight at that time point, and analyze the flow stability influenced by the wing's flexibility. It can be seen that the wing flexibility is related to the higher pressurization capacity and the flow stability, and the pressurization capacity of flexible wing is proportional to the angular speed, angular distortion rate and radius square.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Engineering, Mechanical
研究领域[WOS]	Thermodynamics ; Engineering
关键词[WOS]	MICRO-AIR VEHICLES ; WING ROTATION ; INSECT FLIGHT ; AERODYNAMIC PERFORMANCE ; FORCE GENERATION ; LIFT ; MECHANISMS ; VORTICES ; DYNAMICS ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000361077500003
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98958]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	Chinese Acad Sci, Inst Engn Thermophys, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Wang Huishe,Zhu Junqiang. Stream Surface Theory of Bird-like Flapping Flight[J]. JOURNAL OF THERMAL SCIENCE,2015,24(5):417-426.
APA	Wang Huishe,&Zhu Junqiang.(2015).Stream Surface Theory of Bird-like Flapping Flight.JOURNAL OF THERMAL SCIENCE,24(5),417-426.
MLA	Wang Huishe,et al."Stream Surface Theory of Bird-like Flapping Flight".JOURNAL OF THERMAL SCIENCE 24.5(2015):417-426.