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




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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 |
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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. |
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