On the Fluid Dynamical Effects of Synchronization in Side-by-Side Swimmers

Overview

Journal Biomimetics (Basel)

Date 2019 Dec 11

PMID 31817389

Citations 5

Authors

Ramiro Godoy-Diana

Jerome Vacher

Veronica Raspa

Benjamin Thiria

Affiliations

Soon will be listed here.

Abstract

In-phase and anti-phase synchronization of neighboring swimmers is examined experimentally using two self-propelled independent flexible foils swimming side-by-side in a water tank. The foils are actuated by pitching oscillations at one extremity-the head of the swimmers-and the flow engendered by their undulations is analyzed using two-dimensional particle image velocimetry in their frontal symmetry plane. Following recent observations on the behavior of real fish, we focus on the comparison between in-phase and anti-phase actuation by fixing all other geometric and kinematic parameters. We show that swimming with a neighbor is beneficial for both synchronizations tested, as compared to swimming alone, with an advantage for the anti-phase synchronization. We show that the advantage of anti-phase synchronization in terms of swimming performance for the two-foil "school" results from the emergence of a periodic coherent jet between the two swimmers.

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