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A wireless sensor network for measuring ship responses in abnormal waves

A wireless sensor network for measuring ship responses in abnormal waves
A wireless sensor network for measuring ship responses in abnormal waves
The responses of a ship to abnormal waves are of considerable importance due to the severe nature of such wave-ship encounters. To fully investigate the influence of abnormal waves on ship design, experimental investigations need to include both the directional aspect of abnormal waves and the forward speed of the vessel.

This paper presents the development of a novel wireless sensor network as an alternative to conventional towing tank methods for recording rigid body motions, accelerations and distortions in regular and irregular waves, including the influence of abnormal waves. Key advantages of such sensors are that they are lightweight, capable of providing a large range of information from an individual test, and are a simple method that allows the measurement of responses of a model in directional seas (either a wave basin or open water) without the limitation of a shore-based acquisition system.

Use of the wireless sensor network is validated in towing tank experiments via regular wave seakeeping tests, and tests in random and abnormal waves. Results show good agreement with conventional acquisition methods, although some improvement in the method of obtaining heave is desirable. In addition, a discussion is included of the influence of abnormal waves on ship responses.

Overall the wireless sensor network shows significant potential for obtaining responses a ship in a range of sea states. There is good agreement with responses measured using conventional techniques and levels of uncertainty are low, in general less than 5%. The integration of additional hardware such as synchronised video provides a useful tool for visualising wave encounters.
Bennett, S.
6c2fda55-1416-4cfa-ab39-9f6eea640b95
Winden, B.
78f0bce6-9f1a-428c-bdc2-d044251790ba
Brooks, Christopher James
5c504fef-0360-4b2a-b6c4-d88bbd6e5bac
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Hudson, D.A.
3814e08b-1993-4e78-b5a4-2598c40af8e7
Forrester, A.I.J.
176bf191-3fc2-46b4-80e0-9d9a0cd7a572
Taunton, D.J.
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Bennett, S.
6c2fda55-1416-4cfa-ab39-9f6eea640b95
Winden, B.
78f0bce6-9f1a-428c-bdc2-d044251790ba
Brooks, Christopher James
5c504fef-0360-4b2a-b6c4-d88bbd6e5bac
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Hudson, D.A.
3814e08b-1993-4e78-b5a4-2598c40af8e7
Forrester, A.I.J.
176bf191-3fc2-46b4-80e0-9d9a0cd7a572
Taunton, D.J.
10bfbe83-c4c2-49c6-94c0-2de8098c648c

Bennett, S., Winden, B., Brooks, Christopher James, Turnock, S.R., Hudson, D.A., Forrester, A.I.J. and Taunton, D.J. (2012) A wireless sensor network for measuring ship responses in abnormal waves. 29th Symposium on Naval Hydrodynamics, Sweden. 26 - 31 Aug 2012. 17 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The responses of a ship to abnormal waves are of considerable importance due to the severe nature of such wave-ship encounters. To fully investigate the influence of abnormal waves on ship design, experimental investigations need to include both the directional aspect of abnormal waves and the forward speed of the vessel.

This paper presents the development of a novel wireless sensor network as an alternative to conventional towing tank methods for recording rigid body motions, accelerations and distortions in regular and irregular waves, including the influence of abnormal waves. Key advantages of such sensors are that they are lightweight, capable of providing a large range of information from an individual test, and are a simple method that allows the measurement of responses of a model in directional seas (either a wave basin or open water) without the limitation of a shore-based acquisition system.

Use of the wireless sensor network is validated in towing tank experiments via regular wave seakeeping tests, and tests in random and abnormal waves. Results show good agreement with conventional acquisition methods, although some improvement in the method of obtaining heave is desirable. In addition, a discussion is included of the influence of abnormal waves on ship responses.

Overall the wireless sensor network shows significant potential for obtaining responses a ship in a range of sea states. There is good agreement with responses measured using conventional techniques and levels of uncertainty are low, in general less than 5%. The integration of additional hardware such as synchronised video provides a useful tool for visualising wave encounters.

Full text not available from this repository.

More information

e-pub ahead of print date: August 2012
Venue - Dates: 29th Symposium on Naval Hydrodynamics, Sweden, 2012-08-26 - 2012-08-31
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 345868
URI: https://eprints.soton.ac.uk/id/eprint/345868
PURE UUID: a2891b6f-3083-474a-977b-238452d430ac
ORCID for S.R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400
ORCID for D.A. Hudson: ORCID iD orcid.org/0000-0002-2012-6255
ORCID for D.J. Taunton: ORCID iD orcid.org/0000-0002-6865-089X

Catalogue record

Date deposited: 05 Dec 2012 13:58
Last modified: 06 Jun 2018 13:14

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Contributors

Author: S. Bennett
Author: B. Winden
Author: Christopher James Brooks
Author: S.R. Turnock ORCID iD
Author: D.A. Hudson ORCID iD
Author: D.J. Taunton ORCID iD

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