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Computer Modelling and Experimental Study of Towed Underwater Systems

Citation

Ranmuthugala, SD, Computer Modelling and Experimental Study of Towed Underwater Systems, Proceedings of the PACIFIC 2002, 29-31 January 2002, Sydney, Australia, pp. 286-294. ISBN 0 85825 793 9 (2002) [Non Refereed Conference Paper]


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Copyright Statement

Copyright PACIFIC 2002 International Maritime Conference

Abstract

The instantaneous position of a towed body is influenced by the unsteady wave induced motion of its surface vessel, transmitted via the tow cable. In an effort to decouple this motion, a two-part tow configuration has been employed. This paper describes a three dimensional dynamic computer model developed to investigate the two-part tow, by modelling the cables separately and coupling them dynamically. This approach has been further extended to model multiple towed systems, where the underwater bodies are towed either in series or in parallel. All underwater bodies are modelled in three-dimensions with six degrees-of-freedom. The computer model is supplemented and validated using experimental results from scaled model tests and full scale trials. Since the solution to the dynamic equations is carried out using numerical techniques, the requirements for accuracy and numerical stability of the integration technique are also investigated and an acceptable time interval is presented.

Item Details

Item Type:Non Refereed Conference Paper
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Special Vehicles
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Ranmuthugala, SD (Professor Dev Ranmuthugala)
ID Code:64986
Year Published:2002
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2010-09-21
Last Modified:2012-02-01
Downloads:5 View Download Statistics

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