Article Dans Une Revue Journal of Fluid Mechanics Année : 2023

Far-field hydrodynamic interaction in a group of swimmers

Résumé

Three-dimensional schools of hydrodynamically axisymmetric swimmers self-propelling at a constant velocity are studied. We introduce a low-order model for the induced velocity based on the far-field approximation. We inquire if, by holding suitable relative positions in the three-dimensional space, the swimmers can reduce the overall energy consumption of the school in comparison with the same number of isolated individuals at the same velocity. We find a considerable (several per cent) energy saving achievable by chain formations. The benefit increases asymptotically with the number of individuals, towards a finite limit that is a function of the minimum allowed spacing between each pair of neighbours.

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Dates et versions

hal-04285008 , version 1 (14-11-2023)

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Gen Li, Lei Duan, Jörn Sesterhenn, Ramiro Godoy-Diana, Benjamin Thiria, et al.. Far-field hydrodynamic interaction in a group of swimmers. Journal of Fluid Mechanics, 2023, 974, pp.A34. ⟨10.1017/jfm.2023.802⟩. ⟨hal-04285008⟩
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