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Abstract

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
Journal or Publication Title:	Ocean Engineering: An International Journal of Research and Development
Publisher:	Pergamon-Elsevier Science Ltd
ISSN:	0029-8018
DOI / ID Number:	10.1016/j.oceaneng.2017.12.048
Copyright Information:	© 2017 Elsevier Ltd.
Related URLs:	Google Scholar: Leong, ZQ UTAS Profile: Leong, ZQ Google Scholar: Chin, C UTAS Profile: Chin, C
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