Effects of Flexible Propulsors on Hydrodynamic Forces

Hisham M. Shehata; Muhammad R. Hajj; Craig A. Woolsey; Saad Ragab

doi:10.1016/j.ifacol.2019.12.276

Effects of Flexible Propulsors on Hydrodynamic Forces

Hisham M. Shehata, Muhammad R. Hajj, Craig A. Woolsey, Saad Ragab

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present experimental measurements of forward forces and external torques generated during forced oscillations of a tail on a fish-like body. The experiments were performed in a towing basin. Three panels having different flexural rigidity were tested over a range of oscillatory frequencies and leading edge amplitudes at 0 m/s and 0.35 m/s. The results show that tail panel flexibility enhances thrust production and thrust-to-input power ratios, with propulsive efficiencies reaching up to 45%.

Original language	English
Pages (from-to)	14-20
Number of pages	7
Journal	IFAC-PapersOnLine
Volume	52
Issue number	21
DOIs	https://doi.org/10.1016/j.ifacol.2019.12.276
State	Published - 2019
Event	12th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles CAMS 2019 - Daejeon, Korea, Republic of Duration: 18 Sep 2019 → 20 Sep 2019

Keywords

Hydrodynamics
biolocomotion
propulsive efficiency
thrust
towing basin

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10.1016/j.ifacol.2019.12.276

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title = "Effects of Flexible Propulsors on Hydrodynamic Forces",

abstract = "We present experimental measurements of forward forces and external torques generated during forced oscillations of a tail on a fish-like body. The experiments were performed in a towing basin. Three panels having different flexural rigidity were tested over a range of oscillatory frequencies and leading edge amplitudes at 0 m/s and 0.35 m/s. The results show that tail panel flexibility enhances thrust production and thrust-to-input power ratios, with propulsive efficiencies reaching up to 45%.",

keywords = "Hydrodynamics, biolocomotion, propulsive efficiency, thrust, towing basin",

author = "Shehata, {Hisham M.} and Hajj, {Muhammad R.} and Woolsey, {Craig A.} and Saad Ragab",

note = "Publisher Copyright: {\textcopyright} 2019. The Authors. Published by Elsevier Ltd. All rights reserved.; 12th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles CAMS 2019 ; Conference date: 18-09-2019 Through 20-09-2019",

year = "2019",

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language = "English",

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TY - JOUR

T1 - Effects of Flexible Propulsors on Hydrodynamic Forces

AU - Shehata, Hisham M.

AU - Hajj, Muhammad R.

AU - Woolsey, Craig A.

AU - Ragab, Saad

PY - 2019

Y1 - 2019

N2 - We present experimental measurements of forward forces and external torques generated during forced oscillations of a tail on a fish-like body. The experiments were performed in a towing basin. Three panels having different flexural rigidity were tested over a range of oscillatory frequencies and leading edge amplitudes at 0 m/s and 0.35 m/s. The results show that tail panel flexibility enhances thrust production and thrust-to-input power ratios, with propulsive efficiencies reaching up to 45%.

AB - We present experimental measurements of forward forces and external torques generated during forced oscillations of a tail on a fish-like body. The experiments were performed in a towing basin. Three panels having different flexural rigidity were tested over a range of oscillatory frequencies and leading edge amplitudes at 0 m/s and 0.35 m/s. The results show that tail panel flexibility enhances thrust production and thrust-to-input power ratios, with propulsive efficiencies reaching up to 45%.

KW - Hydrodynamics

KW - biolocomotion

KW - propulsive efficiency

KW - thrust

KW - towing basin

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U2 - 10.1016/j.ifacol.2019.12.276

DO - 10.1016/j.ifacol.2019.12.276

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AN - SCOPUS:85079667359

VL - 52

SP - 14

EP - 20

JO - IFAC-PapersOnLine

JF - IFAC-PapersOnLine

IS - 21

T2 - 12th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles CAMS 2019

Y2 - 18 September 2019 through 20 September 2019

ER -

Effects of Flexible Propulsors on Hydrodynamic Forces

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Keywords

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