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Six-DOF simulations of an underwater vehicle undergoing straight line and steady turning manoeuvres
journal contributionposted on 2023-05-19, 14:34 authored by Howan KimHowan Kim, Susantha RanmuthugalaSusantha Ranmuthugala, Zhi Quan LeongZhi Quan Leong, Christopher ChinChristopher Chin
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.
Publication titleOcean Engineering
Department/SchoolAustralian Maritime College
PublisherPergamon-Elsevier Science Ltd
Place of publicationUnited Kingdom
Rights statement© 2017 Elsevier Ltd.