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The hydrodynamic effects on an underwater vehicle in close proximity to a larger moving vehicle


Mat Saad, KA and Ranmuthugala, D and Duffy, J and Leong, ZQ, The hydrodynamic effects on an underwater vehicle in close proximity to a larger moving vehicle, Proceedings of the 11th International Naval Engineering Conference and Exhibition, 15-17 May 2012, Edinburgh, UK, pp. 1-13. (2012) [Refereed Conference Paper]

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Copyright 2012 IMarEST

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An Unmanned Underwater Vehicle (UUV) operating in close proximity to a larger underwater vehicle can experience significant hydrodynamic interaction, which may adversely affect the manoeuvrability of the former. Due to significant differences in size and speed, the UUV will be required to navigate through rapidly varying flow regimes, which can cause it to lose position and trajectory. This may result in mission failure and possible loss of vehicle. The present project investigates these effects through analytical and experimental work, with an aim to quantify the flow pattern and pressure distribution at varying longitudinal and lateral separations between the vehicles and at varying speeds. The work consists of modelling the behaviour of the UUV in close proximity to a larger body using Computational Fluid Dynamics (CFD) in order to understand the interaction between the two bodies under different configurations. The CFD results are validated and supplemented by experimental work in the Australian Maritime College (AMC) Towing Tank, with the use of a Horizontal Planar Motion Mechanism (HPMM) as a support mechanism to measure the resulting forces and moments. This paper also explains the issues involved in CFD modelling and experimental work when dealing with relative motion between vehicles having a large difference in size.

Item Details

Item Type:Refereed Conference Paper
Keywords:underwater bodies interaction, computational fluid dynamics, experimental fluid dynamics
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Mat Saad, KA (Mr Khairul Mat Saad)
UTAS Author:Ranmuthugala, D (Professor Dev Ranmuthugala)
UTAS Author:Duffy, J (Associate Professor Jonathan Duffy)
UTAS Author:Leong, ZQ (Dr Zhi Leong)
ID Code:79579
Year Published:2012
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2012-09-21
Last Modified:2017-10-03
Downloads:14 View Download Statistics

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