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Propulsive performance of a passively flapping plate in a uniform flow

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Abstract

Propulsive performance of a passively flapping plate in a uniform viscous flow has been studied numerically by means of a multiblock lattice Boltzmann method. The passively flapping plate is modeled by a rigid plate with a torsion spring acting about the pivot at the leading-edge of the plate, which is called a lumped-torsional-flexibility model. When the leading-edge is forced to take a vertical oscillation, the plate pitches passively due to the fluid-plate interaction. Based on our numerical simulations, various fundamental mechanisms dictating the propulsive performance, including the forces on the plate, power consumption, propulsive efficiency and vortical structures, have been studied. It is found that the torsional flexibility of the passively pitching plate can improve the propulsive performance. The results obtained in this study provide some physical insights into the understanding of the propulsive behaviors of swimming and flying animals.

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Author information

Authors and Affiliations

  1. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China

    Rui Han  (韩瑞) & Lei Cao  (曹垒)

  2. Department of Modern Mechanics, University of Science and Technology of China, Hefei, 230026, China

    Jie Zhang  (张杰) & Xi-yun Lu  (陆夕云)

Authors
  1. Rui Han  (韩瑞)
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  2. Jie Zhang  (张杰)
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  3. Lei Cao  (曹垒)
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  4. Xi-yun Lu  (陆夕云)
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Corresponding author

Correspondence to Xi-yun Lu  (陆夕云).

Additional information

Project supported by the Natural Science Foundation of China (Grant No. 11372304), the 111 Project (Grant No. B07033).

Biography: HAN Rui (1986-), Female, Ph. D.

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Han, R., Zhang, J., Cao, L. et al. Propulsive performance of a passively flapping plate in a uniform flow. J Hydrodyn 27, 496–501 (2015). https://doi.org/10.1016/S1001-6058(15)60509-1

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  • DOI: https://doi.org/10.1016/S1001-6058(15)60509-1

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