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Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil
He GY; Wang Q; Zhang X(张星); Zhang SG; Zhang X(张星); LNM, Institute of Mechanics,Chinese Academy of Sciences,100190 Beijing, China
Source PublicationActa Mechanica Sinica
2012-12-25
Volume28Issue:6Pages:1551-1556
ISSN0567-7718
AbstractFlying and marine animals often use flapping wings or tails to generate thrust. In this paper, we will use the simplest flapping model with a sinusoidal pitching motion over a range of frequency and amplitude to investigate the mechanism of thrust generation. Previous work focuses on the Karman vortex street and the reversed Karman vortex street but the transition between two states remains unknown. The present numerical simulation provides a complete scenario of flow patterns from the Karman vortex street to reversed Karman vortex street via aligned vortices and the ultimate state is the deflected Karman vortex street, as the parameters of flapping motions change. The results are in agreement with the previous experiment. We make further discussion on the relationship of the observed states with drag and thrust coefficients and explore the mechanism of enhanced thrust generation using flapping motions.
KeywordFlapping Motion Immersed Boundary Method Wake Symmetry-breaking
Subject Area水动力学
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000313061200007
Funding OrganizationThe project was supported by the Natural Science Foundation of Jiangxi Province (2010GZC0162).
DepartmentLNM湍流
Classification二类
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46789
Collection非线性力学国家重点实验室
Corresponding AuthorZhang X(张星); LNM, Institute of Mechanics,Chinese Academy of Sciences,100190 Beijing, China
Recommended Citation
GB/T 7714
He GY,Wang Q,Zhang X,et al. Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil[J]. Acta Mechanica Sinica,2012,28(6):1551-1556.
APA He GY,Wang Q,Zhang X,Zhang SG,张星,&LNM, Institute of Mechanics,Chinese Academy of Sciences,100190 Beijing, China.(2012).Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil.Acta Mechanica Sinica,28(6),1551-1556.
MLA He GY,et al."Numerical analysis on transitions and symmetry-breaking in the wake of a flapping foil".Acta Mechanica Sinica 28.6(2012):1551-1556.
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