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Understanding the power requirements of autonomous underwater systems, Part I: An analytical model for optimum swimming speeds and cost of transport

Understanding the power requirements of autonomous underwater systems, Part I: An analytical model for optimum swimming speeds and cost of transport
Understanding the power requirements of autonomous underwater systems, Part I: An analytical model for optimum swimming speeds and cost of transport
Many marine species exhibit capabilities that would be desirable for manmade systems operating in the maritime environment. However, without detracting from the potential, if bioinspiration is to prove beneficial, it is important to have a consistent set of metrics that allow fair comparison, without bias, when comparing the performance of engineered and biological systems. In this study we focus on deriving an unbiased metric of performance applicable to marine animals and engineered subsea vehicles for one of the most fundamental of properties; that of the energy cost of locomotion. We present a rational analytical model of the physics behind the total energy cost of locomotion applicable to both biological and engineered autonomous underwater marine systems. This model proposes the use of an equivalent spheroid efficiency as a fair metric to compare engineered and biological systems. The model is then utilised to identify how changes in mass, speed, spheroid efficiency and hotel load impact the performance of the system.
bioinspiration, Autonomous Underwater Vehicles, hydrodynamics, cost of transport
0029-8018
271–279
Phillips, Alexander
f565b1da-6881-4e2a-8729-c082b869028f
Haroutunian, Maryam
f519154e-664f-40a4-9833-38c5f17f31d5
Murphy, Alan J
90725c76-91d7-4ed4-a704-3438c4e06c71
Boyd, Stephen
bcbdefe0-5acf-4d6a-8a16-f4abf7c78b10
Blake, James
6afa420d-0936-4acc-861b-36885406c891
Griffiths, Gwyn
a0447dd5-c7cd-4bc9-b945-0da7ab236a08
Phillips, Alexander
f565b1da-6881-4e2a-8729-c082b869028f
Haroutunian, Maryam
f519154e-664f-40a4-9833-38c5f17f31d5
Murphy, Alan J
90725c76-91d7-4ed4-a704-3438c4e06c71
Boyd, Stephen
bcbdefe0-5acf-4d6a-8a16-f4abf7c78b10
Blake, James
6afa420d-0936-4acc-861b-36885406c891
Griffiths, Gwyn
a0447dd5-c7cd-4bc9-b945-0da7ab236a08

Phillips, Alexander, Haroutunian, Maryam, Murphy, Alan J, Boyd, Stephen, Blake, James and Griffiths, Gwyn (2017) Understanding the power requirements of autonomous underwater systems, Part I: An analytical model for optimum swimming speeds and cost of transport. Ocean Engineering, 133, 271–279. (doi:10.1016/j.oceaneng.2015.12.014).

Record type: Article

Abstract

Many marine species exhibit capabilities that would be desirable for manmade systems operating in the maritime environment. However, without detracting from the potential, if bioinspiration is to prove beneficial, it is important to have a consistent set of metrics that allow fair comparison, without bias, when comparing the performance of engineered and biological systems. In this study we focus on deriving an unbiased metric of performance applicable to marine animals and engineered subsea vehicles for one of the most fundamental of properties; that of the energy cost of locomotion. We present a rational analytical model of the physics behind the total energy cost of locomotion applicable to both biological and engineered autonomous underwater marine systems. This model proposes the use of an equivalent spheroid efficiency as a fair metric to compare engineered and biological systems. The model is then utilised to identify how changes in mass, speed, spheroid efficiency and hotel load impact the performance of the system.

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More information

Accepted/In Press date: 7 December 2015
e-pub ahead of print date: 24 December 2015
Published date: 15 March 2017
Keywords: bioinspiration, Autonomous Underwater Vehicles, hydrodynamics, cost of transport
Organisations: National Oceanography Centre, Fluid Structure Interactions Group, Ocean Technology and Engineering

Identifiers

Local EPrints ID: 385005
URI: http://eprints.soton.ac.uk/id/eprint/385005
ISSN: 0029-8018
PURE UUID: eca690d2-80c2-4d13-a82f-4177e1668dc8
ORCID for Alexander Phillips: ORCID iD orcid.org/0000-0003-3234-8506
ORCID for James Blake: ORCID iD orcid.org/0000-0001-5291-8233

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Date deposited: 15 Dec 2015 10:10
Last modified: 27 Apr 2022 01:47

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Contributors

Author: Alexander Phillips ORCID iD
Author: Maryam Haroutunian
Author: Alan J Murphy
Author: Stephen Boyd
Author: James Blake ORCID iD
Author: Gwyn Griffiths

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