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Six-DOF simulations of an underwater vehicle undergoing straight line and steady turning manoeuvres

Kim, H ORCID: 0000-0003-2992-9115, Ranmuthugala, D ORCID: 0000-0001-8864-2064, Leong, ZQ ORCID: 0000-0002-0644-1822 and Chin, C ORCID: 0000-0002-3070-731X 2018 , 'Six-DOF simulations of an underwater vehicle undergoing straight line and steady turning manoeuvres' , Ocean Engineering, vol. 150 , pp. 102-112 , doi: 10.1016/j.oceaneng.2017.12.048.

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This paper reports on numerical simulations conducted on an underwater vehicle for six-degrees of freedom (6-DOF) free running manoeuvres using Computational Fluid Dynamics (CFD). The CFD manoeuvring trials (straight line and steady turning manoeuvres) were conducted using a model-scaled BB2 submarine with movable control planes and a body force propeller represented by an actuator disk incorporating predetermined propulsion properties. The propulsion properties were obtained from captive self-propulsion simulation adopting the actual BB2 propeller. The free running simulations were validated against experimental data. The results showed that the 6-DOF CFD simulations are capable of predicting the BB2 manoeuvring characteristics with good agreement against the experimental data. The 6-DOF manoeuvring simulations carried out allow for the unsteady viscosity effects, which is usually a limitation of the traditional coefficient-based prediction method. The simulations will enable accurate determination of the vehicle's manoeuvring characteristics, which are essential for the control system design and its safe operating envelope.

Item Type: Article
Authors/Creators:Kim, H and Ranmuthugala, D and Leong, ZQ and Chin, C
Keywords: computational fluid dynamics, underwater vehicles, 6-DOF free running simulation, movable control planes
Journal or Publication Title: Ocean Engineering
Publisher: Pergamon-Elsevier Science Ltd
ISSN: 0029-8018
DOI / ID Number: 10.1016/j.oceaneng.2017.12.048
Copyright Information:

© 2017 Elsevier Ltd.

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