Dynamic interference of two anti-phase flapping foils in side-by-side   arrangement in an incompressible flow

doi:10.1063/1.4978301

CORC > 北京大学 > 工学院

	Dynamic interference of two anti-phase flapping foils in side-by-side arrangement in an incompressible flow
	Bao, Y. ; Zhou, D. ; Tao, J. J. ; Peng, Z. ; Zhu, H. B. ; Sun, Z. L. ; Tong, H. L.
刊名	PHYSICS OF FLUIDS
	2017
关键词	LOW REYNOLDS-NUMBERS PRESSURE-GRADIENT PROJECTION FINITE-ELEMENT FORMULATION THRUST GENERATION CIRCULAR-CYLINDERS OSCILLATING FOILS SQUARE CYLINDERS BIPLANE CONFIGURATION INDUCED VIBRATIONS AIRFOILS
DOI	10.1063/1.4978301
英文摘要	A two-dimensional computational hydrodynamic model is developed to investigate the propulsive performance of a flapping foil system in viscous incompressible flows, which consists of two anti-phase flapping foils in side-by-side arrangement. In the simulations, the gap between the two foils is varied from 1.0 to 4.0 times of the diameter of the semi-circular leading edge; the amplitude-based Strouhal number is changed from 0.06 to 0.55. The simulations therefore cover the flow regimes from negligible to strong interference in the wake flow. The generations of drag and thrust are investigated as well. The numerical results reveal that the counter-phase flapping motion significantly changes the hydrodynamic force generation and associated propulsive wake. Furthermore, the wake interference becomes important for the case with a smaller foil-foil gap and induces the inverted Benard von Karman vortex streets. The results show that the hydrodynamic performance of two anti-phase flapping foils can be significantly different from an isolated pitching foil. Findings of this study are expected to provide new insight for developing hydrodynamic propulsive systems by improving the performance based on the foil-foil interaction. Published by AIP Publishing.; National Natural Science Foundation of China [51278297, 51679139]; Major Program of the National Natural Science Foundation of China [51490674]; Research Program of Shanghai Leader Talent [20]; Doctoral Disciplinary Special Research Project of Chinese Ministry of Education [20130073110096]; Shanghai Natural Science Foundation [17ZR1415100]; SCI(E); ARTICLE; 3; 29
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474883]
专题	工学院
推荐引用方式 GB/T 7714	Bao, Y.,Zhou, D.,Tao, J. J.,et al. Dynamic interference of two anti-phase flapping foils in side-by-side arrangement in an incompressible flow[J]. PHYSICS OF FLUIDS,2017.
APA	Bao, Y..,Zhou, D..,Tao, J. J..,Peng, Z..,Zhu, H. B..,...&Tong, H. L..(2017).Dynamic interference of two anti-phase flapping foils in side-by-side arrangement in an incompressible flow.PHYSICS OF FLUIDS.
MLA	Bao, Y.,et al."Dynamic interference of two anti-phase flapping foils in side-by-side arrangement in an incompressible flow".PHYSICS OF FLUIDS (2017).