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Vortex interactions of two burst-and-coast swimmers in a side-by-side arrangement

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2023

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Bhalla, Amneet Pal Singh

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Deutsche Forschungsgemeinschaft (DFG): EXC 2117-422037984
U.S. National Science Foundation (NSF): OAC 1931368
U.S. National Science Foundation (NSF): CBET CAREER 2234387

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Theoretical and Computational Fluid Dynamics. Springer. 2023, 37(4), pp. 505-517. ISSN 0935-4964. eISSN 1432-2250. Available under: doi: 10.1007/s00162-023-00664-z

Zusammenfassung

Both schooling behavior and burst-and-coast gait could improve fish swimming performance. The extent to which fish can improve their swimming performance by combining these two strategies is still unknown. By examining two self-propelled pitching foils positioned side-by-side at different duty cycles (DC), we examine swimming speed and cost of transport efficiency (CoT) using the open-source immersed boundary software IBAMR. We find that a stable schooling formation can only be maintained if both foils employ similar and moderate DC values. In these cases, vortex interactions increase foils’ lateral movements, but not their swimming speed or efficiency. Additionally, we examine vortex interactions in both “schooling" and “fission" scenarios (which are determined by DC). The research provides useful insights into fish behavior and valuable information for designing bio-inspired underwater robots.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Burst-and-coast, Fish schooling, Swimming performance, Vortex formation

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ISO 690CHAO, Li-Ming, Amneet Pal Singh BHALLA, Liang LI, 2023. Vortex interactions of two burst-and-coast swimmers in a side-by-side arrangement. In: Theoretical and Computational Fluid Dynamics. Springer. 2023, 37(4), pp. 505-517. ISSN 0935-4964. eISSN 1432-2250. Available under: doi: 10.1007/s00162-023-00664-z
BibTex
@article{Chao2023-08Vorte-69855,
  year={2023},
  doi={10.1007/s00162-023-00664-z},
  title={Vortex interactions of two burst-and-coast swimmers in a side-by-side arrangement},
  number={4},
  volume={37},
  issn={0935-4964},
  journal={Theoretical and Computational Fluid Dynamics},
  pages={505--517},
  author={Chao, Li-Ming and Bhalla, Amneet Pal Singh and Li, Liang}
}
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