The trajectory of a submerged body being towed by a surface vessel is affected by the wave induced motion of the latter. In an effort to decouple this motion, a two-part tow configuration has been employed. This paper describes a computer model developed to investigate the decoupling effect and to predict the trajectory of the towed object. The two cables are modelled separately as a series of lumped masses connected by elastic segments, and then dynamically interlaced. The solution to the dynamic equations describing the motion of the masses subject to specific boundary conditions is then carried out using numerical techniques. This enables the investigation of the effect of varying the point of attachment between the cables and to include systems consisting of multiple towed objects. The model is to be validated by scaled model tests in a circulating water channel and full scale trials at a later date.
History
Publication title
Record of Proceedings
Volume
II
Editors
Aribert-Christ RP
Pagination
1-16
ISBN
0 646 16489 9
Department/School
Australian Maritime College
Publisher
Australian Exhibition Services Pty Ltd
Place of publication
Melbourne, Australia
Event title
Offshore Australia 1993 : the 2nd Australian International Oil, Gas & Petrochemical Exhibition and Conference, incorporating Petrochem '93
Event Venue
Melbourne, Australia
Date of Event (Start Date)
1993-11-23
Date of Event (End Date)
1993-11-26
Rights statement
Copyright 1993 Australian Exhibition Services Pty Ltd