Large-amplitude undulatory swimming near a wall

Rafael Fernández-Prats; Veronica Raspa; Benjamin Thiria; Francisco Huera-Huarte; Ramiro Godoy-Diana

doi:10.1088/1748-3190/10/1/016003

Large-amplitude undulatory swimming near a wall

Rafael Fernández-Prats
, Veronica Raspa
, Benjamin Thiria
, Francisco Huera-Huarte
, Ramiro Godoy-Diana

Research output: Contribution to journal › Article › peer-review

Abstract

The propulsive dynamics of a flexible undulating foil in a self-propelled swimming configuration near a wall is studied experimentally. Measurements of the swimming speed and the propulsive force are presented, together with image acquisition of the kinematics of the foil and particle image velocimetry (PIV) in its wake. The presence of the wall enhances the cruising velocity in some cases up to 25% and the thrust by a 45% , for swept angles of 160 and 240°. The physical mechanisms underlying this effect are discussed by studying the vorticity dynamics in the wake of the foil. Proper orthogonal decomposition is applied to the PIV measurements in order to analyse the kinetic energy modal distribution in the flow and to relate it to the propulsion generated by the foil.

Original language	English
Article number	016003
Journal	Bioinspiration and Biomimetics
Volume	10
Issue number	1
DOIs	https://doi.org/10.1088/1748-3190/10/1/016003
Publication status	Published - 1 Feb 2015
Externally published	Yes

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title = "Large-amplitude undulatory swimming near a wall",

abstract = "The propulsive dynamics of a flexible undulating foil in a self-propelled swimming configuration near a wall is studied experimentally. Measurements of the swimming speed and the propulsive force are presented, together with image acquisition of the kinematics of the foil and particle image velocimetry (PIV) in its wake. The presence of the wall enhances the cruising velocity in some cases up to 25\% and the thrust by a 45\% , for swept angles of 160 and 240°. The physical mechanisms underlying this effect are discussed by studying the vorticity dynamics in the wake of the foil. Proper orthogonal decomposition is applied to the PIV measurements in order to analyse the kinetic energy modal distribution in the flow and to relate it to the propulsion generated by the foil.",

author = "Rafael Fern{\'a}ndez-Prats and Veronica Raspa and Benjamin Thiria and Francisco Huera-Huarte and Ramiro Godoy-Diana",

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AU - Fernández-Prats, Rafael

AU - Raspa, Veronica

AU - Thiria, Benjamin

AU - Huera-Huarte, Francisco

AU - Godoy-Diana, Ramiro

PY - 2015/2/1

Y1 - 2015/2/1

N2 - The propulsive dynamics of a flexible undulating foil in a self-propelled swimming configuration near a wall is studied experimentally. Measurements of the swimming speed and the propulsive force are presented, together with image acquisition of the kinematics of the foil and particle image velocimetry (PIV) in its wake. The presence of the wall enhances the cruising velocity in some cases up to 25% and the thrust by a 45% , for swept angles of 160 and 240°. The physical mechanisms underlying this effect are discussed by studying the vorticity dynamics in the wake of the foil. Proper orthogonal decomposition is applied to the PIV measurements in order to analyse the kinetic energy modal distribution in the flow and to relate it to the propulsion generated by the foil.

AB - The propulsive dynamics of a flexible undulating foil in a self-propelled swimming configuration near a wall is studied experimentally. Measurements of the swimming speed and the propulsive force are presented, together with image acquisition of the kinematics of the foil and particle image velocimetry (PIV) in its wake. The presence of the wall enhances the cruising velocity in some cases up to 25% and the thrust by a 45% , for swept angles of 160 and 240°. The physical mechanisms underlying this effect are discussed by studying the vorticity dynamics in the wake of the foil. Proper orthogonal decomposition is applied to the PIV measurements in order to analyse the kinetic energy modal distribution in the flow and to relate it to the propulsion generated by the foil.

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DO - 10.1088/1748-3190/10/1/016003

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VL - 10

JO - Bioinspiration and Biomimetics

JF - Bioinspiration and Biomimetics

IS - 1

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ER -

Large-amplitude undulatory swimming near a wall

Abstract

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