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Thrust generation and wake structure of wiggling hydrofoil
He GY; Zhang SG; Zhang X(张星); Zhang X(张星)
Source PublicationApplied Mathematics and Mechanics
2010
Volume31Issue:5Pages:585–592
ISSN0253-4827
AbstractMarine animals and micro-machines often use wiggling motion to generate thrust. The wiggling motion can be modeled by a progressive wave where its wavelength describes the flexibility of wiggling animals. In the present study, an immersed boundary method is used to simulate the flows around the wiggling hydrofoil NACA 65-010 at low Reynolds numbers. One can find from the numerical simulations that the thrust generation is largely determined by the wavelength. The thrust coefficients decrease with the increasing wavelength while the propulsive efficiency reaches a maximum at a certain wavelength due to the viscous effects. The thrust generation is associated with two different flow patterns in the wake: the well-known reversed Karman vortex streets and the vortex dipoles. Both are jet-type flows where the thrust coefficients associated with the reversed Karman vortex streets are larger than the ones associated with the vortex diploes.
KeywordPropulsive Performance Wiggling Motion Immersed Boundary Method Wake
Subject Area流体力学
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Indexed BySCI
Language英语
WOS IDWOS:000277625100006
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43314
Collection非线性力学国家重点实验室
Corresponding AuthorZhang X(张星)
Recommended Citation
GB/T 7714
He GY,Zhang SG,Zhang X,et al. Thrust generation and wake structure of wiggling hydrofoil[J]. Applied Mathematics and Mechanics,2010,31(5):585–592.
APA He GY,Zhang SG,Zhang X,&张星.(2010).Thrust generation and wake structure of wiggling hydrofoil.Applied Mathematics and Mechanics,31(5),585–592.
MLA He GY,et al."Thrust generation and wake structure of wiggling hydrofoil".Applied Mathematics and Mechanics 31.5(2010):585–592.
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