<p>Aerodynamic performance of a bio-inspired flapping wing with local sweep morphing</p>

doi:10.1063/5.0090718

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Aerodynamic performance of a bio-inspired flapping wing with local sweep morphing
	Wang, Chunyu 1,2; Liu, Yi 1,2; Xu, Duo 1,2; Wang, Shizhao 1,2
刊名	PHYSICS OF FLUIDS
	2022-05-01
卷号	34 期号:5 页码:16
ISSN号	1070-6631
DOI	10.1063/5.0090718
通讯作者	Wang, Shizhao(wangsz@lnm.imech.ac.cn)
英文摘要	Birds and bats frequently reconfigure their wing planform through a combination of flapping and local sweep morphing, suggesting a possible approach for improving the performance of micro aerial vehicles. We explore the effects of combined flapping and local sweep morphing on aerodynamic performance by employing a bio-inspired two-jointed flapping wing with local sweep morphing. The bio-inspired wing consists of inner and outer sections, which flap around the root joint (shoulder) and the midspan joint (wrist), respectively. The aerodynamic forces and the unsteady vortex structures are evaluated by numerically solving the incompressible Navier-Stokes equations. The results show that combined flapping and local sweep morphing can significantly enhance the aerodynamic performance. In particular, the average lift coefficient is 1.50 times greater than that of simple gliding with single local sweep morphing. Combined flapping and local sweep morphing also have a relatively high pitch moment and shift the aerodynamic center position backward, producing advantages in terms of maneuverability/agility and stability. We find that the vortex structures associated with the combined motion feature midspan vortices, which arise from the leading-edge vortices of the inner wing and contribute to the enhanced aerodynamic performance. We show that the kinematics of combined flapping and local sweep morphing can be further optimized if the midspan vortices are captured by the outer wing. Published under an exclusive license by AIP Publishing.& nbsp;& nbsp;
资助项目	National Natural Science Foundation of China (NSFC) Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; NSFC[11922214] ; NSFC[91752118]
WOS关键词	WIDE-RANGE ; FLIGHT ; DESIGN ; KINEMATICS ; LIFT ; AIRCRAFT ; VORTICES ; PLATE ; MODEL ; RATIO
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000795706900009
资助机构	National Natural Science Foundation of China (NSFC) Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; NSFC
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89384]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Wang, Shizhao
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chunyu,Liu, Yi,Xu, Duo,et al. Aerodynamic performance of a bio-inspired flapping wing with local sweep morphing [J]. PHYSICS OF FLUIDS,2022,34(5):16.
APA	Wang, Chunyu,Liu, Yi,Xu, Duo,&Wang, Shizhao.(2022). Aerodynamic performance of a bio-inspired flapping wing with local sweep morphing .PHYSICS OF FLUIDS,34(5),16.
MLA	Wang, Chunyu,et al." Aerodynamic performance of a bio-inspired flapping wing with local sweep morphing ".PHYSICS OF FLUIDS 34.5(2022):16.