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Characteristic of low and middle frequency underwater noise of a catamaran

Characteristic of low and middle frequency underwater noise of a catamaran
Characteristic of low and middle frequency underwater noise of a catamaran
This paper examines the characteristic of low and middle frequency underwater noise of a catamaran. Based on acoustic-structure coupling method, the low and middle frequency underwater noise radiation prediction model of a twin-hull craft is established. The underwater noise radiations excited by both the monohulland double hulls are studied, respectively. Calculation method of underwater noise of twin-hull craft is also discussed. Study shows that the behaviours of underwater noise radiation of a catamaran is quite different from a single hull ship. Due to the existence of free surface and twin hulls of the craft, the underwater sound radiation varies especially in the near field -. The sound directivity changes severely when standing wave appears between the region of twin hulls if the distance of bilateral hulls and sound wave length satisfies certain conditions at certain frequencies. However, if the standing wave effects do not occur between twin hulls the principle of linear superposition is approximately satisfied.
978-1-138-02789-3
159-165
CRC Press
Pang, F.Z.
9477b394-c25a-49eb-aa1a-144f7ed940fd
Xue, Y.Z.
f1c835f4-8414-4709-943a-ca57a4e06ca2
Tang, D.
800eb0b5-2a75-4dc3-9282-6d69bd78fba3
Li, S.
be6d14e4-0c49-47a8-a6e0-1c99a64e1024
Xiong, Y.P.
51be8714-186e-4d2f-8e03-f44c428a4a49
Guedes Soares, Carlos
Shenoi, R. Arjit
Pang, F.Z.
9477b394-c25a-49eb-aa1a-144f7ed940fd
Xue, Y.Z.
f1c835f4-8414-4709-943a-ca57a4e06ca2
Tang, D.
800eb0b5-2a75-4dc3-9282-6d69bd78fba3
Li, S.
be6d14e4-0c49-47a8-a6e0-1c99a64e1024
Xiong, Y.P.
51be8714-186e-4d2f-8e03-f44c428a4a49
Guedes Soares, Carlos
Shenoi, R. Arjit

Pang, F.Z., Xue, Y.Z., Tang, D., Li, S. and Xiong, Y.P. (2015) Characteristic of low and middle frequency underwater noise of a catamaran. In, Guedes Soares, Carlos and Shenoi, R. Arjit (eds.) Analysis and Design of Marine Structures V. London, GB. CRC Press, pp. 159-165. (doi:10.1201/b18179-22).

Record type: Book Section

Abstract

This paper examines the characteristic of low and middle frequency underwater noise of a catamaran. Based on acoustic-structure coupling method, the low and middle frequency underwater noise radiation prediction model of a twin-hull craft is established. The underwater noise radiations excited by both the monohulland double hulls are studied, respectively. Calculation method of underwater noise of twin-hull craft is also discussed. Study shows that the behaviours of underwater noise radiation of a catamaran is quite different from a single hull ship. Due to the existence of free surface and twin hulls of the craft, the underwater sound radiation varies especially in the near field -. The sound directivity changes severely when standing wave appears between the region of twin hulls if the distance of bilateral hulls and sound wave length satisfies certain conditions at certain frequencies. However, if the standing wave effects do not occur between twin hulls the principle of linear superposition is approximately satisfied.

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More information

Published date: 11 March 2015
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 389686
URI: http://eprints.soton.ac.uk/id/eprint/389686
ISBN: 978-1-138-02789-3
PURE UUID: cdb5a366-82c1-4e6c-80b2-2d0bde345974
ORCID for Y.P. Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 14 Mar 2016 16:56
Last modified: 20 Jul 2019 01:07

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