Experimental characterization of structural traveling wave-induced thrust
Experimental characterization of structural traveling wave-induced thrust
Using nature-inspired solutions for propulsion, this work investigates the use of traveling waves to generate thrust in water. A design based on a slender cantilever beam similar to flagella in bacteria is submerged in water and excited with a sinusoidal motion to study the impact of frequency and amplitude of the oscillation on the thrust generation. Structural measurements combined with advanced flow diagnostic techniques are used to characterize the behavior of the fluid–structure system. The structural response and the induced traveling waves are first studied in air and characterized through laser vibrometry and high-speed digital image correlation. This demonstrated the possibility of inducing traveling waves in the structure and permitted to identify the conditions that maximize the traveling versus the standing wave contribution. The characterization of the fluid–structure interaction has been done using Laser Doppler Anemometry (LDA). LDA measurement was carried out downstream from the beam at a fixed distance to measure the velocity of the induced flow at different excitation conditions (amplitude and frequency). The results showed that the coupling between the structural motion and the thrust generated is nonlinear in nature and depends on the tip displacement of the beam. Empirical laws that relate the amplitude and frequency of excitation to the generated thrust are here proposed.
Experimental structural dynamics, Fluid, Laser experimental measurements, Structure interactions, Thrust, Traveling waves
27-35
Syuhri, Skriptyan
f67feb3d-b405-48a4-ae28-ef9151695334
Zare-Behtash, Hossein
74be9b97-cb09-49c6-9f75-7ec58c0dd16c
Cammarano, Andrea
c0c85f55-3dfc-4b97-9b79-e2554406a12b
1 October 2023
Syuhri, Skriptyan
f67feb3d-b405-48a4-ae28-ef9151695334
Zare-Behtash, Hossein
74be9b97-cb09-49c6-9f75-7ec58c0dd16c
Cammarano, Andrea
c0c85f55-3dfc-4b97-9b79-e2554406a12b
Syuhri, Skriptyan, Zare-Behtash, Hossein and Cammarano, Andrea
(2023)
Experimental characterization of structural traveling wave-induced thrust.
Allen, Matthew, Blough, Jason and Mains, Michael
(eds.)
In Special Topics in Structural Dynamics and Experimental Techniques, Volume 5 : Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics 2023.
.
(doi:10.1007/978-3-031-37007-6_4).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Using nature-inspired solutions for propulsion, this work investigates the use of traveling waves to generate thrust in water. A design based on a slender cantilever beam similar to flagella in bacteria is submerged in water and excited with a sinusoidal motion to study the impact of frequency and amplitude of the oscillation on the thrust generation. Structural measurements combined with advanced flow diagnostic techniques are used to characterize the behavior of the fluid–structure system. The structural response and the induced traveling waves are first studied in air and characterized through laser vibrometry and high-speed digital image correlation. This demonstrated the possibility of inducing traveling waves in the structure and permitted to identify the conditions that maximize the traveling versus the standing wave contribution. The characterization of the fluid–structure interaction has been done using Laser Doppler Anemometry (LDA). LDA measurement was carried out downstream from the beam at a fixed distance to measure the velocity of the induced flow at different excitation conditions (amplitude and frequency). The results showed that the coupling between the structural motion and the thrust generated is nonlinear in nature and depends on the tip displacement of the beam. Empirical laws that relate the amplitude and frequency of excitation to the generated thrust are here proposed.
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Published date: 1 October 2023
Keywords:
Experimental structural dynamics, Fluid, Laser experimental measurements, Structure interactions, Thrust, Traveling waves
Identifiers
Local EPrints ID: 492816
URI: http://eprints.soton.ac.uk/id/eprint/492816
PURE UUID: 6848fb4a-0ac9-4a6d-baed-1aacd6723f96
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Date deposited: 15 Aug 2024 16:32
Last modified: 16 Aug 2024 02:12
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Contributors
Author:
Skriptyan Syuhri
Author:
Hossein Zare-Behtash
Author:
Andrea Cammarano
Editor:
Matthew Allen
Editor:
Jason Blough
Editor:
Michael Mains
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