Underwater Vehicles (UV) are required to travel on the surface for periods of time to complete mission requirements. However, knowledge on the drag of a surfaced UV is scarce in the public domain and the knowledge on the behaviour of surface craft is generally not applicable due to substantial differences in hull form. This paper presents a numerical study on the drag coefficient of a surfaced and fully appended BB2 UV in calm water. The results were firstly validated with the available experimental drag data for a range of speeds. Secondly, the free surface elevation along the length of the UV photographed during physical model scale experiments is compared to the free surface elevation predicted by CFD. This research has shown that a multiphase CFD model can accurately predict the drag due to the forward motion of a surfaced UV in calm water.

Item Type:	Refereed Article
Keywords:	submarine, surfaced, hydrodynamics
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:	Courdier, M (Mr Mathieu Courdier)
UTAS Author:	Leong, Z (Dr Zhi Leong)
UTAS Author:	Duffy, J (Associate Professor Jonathan Duffy)
UTAS Author:	Binns, J (Professor Jonathan Binns)
UTAS Author:	Conway, A (Dr Alexander Conway)
ID Code:	150499
Year Published:	2022
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2022-06-17
Last Modified:	2022-08-16
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