Acta Mechanica Sinica

, Volume 34, Issue 3, pp 446–451 | Cite as

Hydrodynamic studies on two wiggling hydrofoils in an oblique arrangement

  • Xingjian Lin
  • Guoyi He
  • Xinyi He
  • Qi Wang
  • Longsheng Chen
Research Paper


The propulsive performance of an oblique school of fish is numerically studied using an immersed boundary technique. The effect of the spacing and wiggling phase on the hydrodynamics of the system is investigated. The hydrodynamics of the system is deeply affected by the spacing between each fish in the school. When the horizontal separation is smaller than the length of the fish body, the downstream fish exhibits a larger thrust coefficient and greater propulsive efficiency than the isolated fish. However, the corresponding values for the upstream fish are smaller. The opposite behavior occurs when the horizontal separation increases beyond the length of fish body. The propulsive performance of the entire oblique school of fish can be substantially enhanced when the separations are optimized.


Hydrodynamic interaction School of fish Immersed boundary method 



The work was supported by the National Natural Science Foundation of China (Grant 11462015).


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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • Xingjian Lin
    • 1
  • Guoyi He
    • 1
  • Xinyi He
    • 2
  • Qi Wang
    • 1
  • Longsheng Chen
    • 1
  1. 1.The School of Aircraft EngineeringNanchang Hangkong UniversityNanchangChina
  2. 2.The School of SoftwareNanchang Hangkong UniversityNanchangChina

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