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Subcritical wave wake unsteadiness


Robbins, A and Thomas, GA and Renilson, MR and Macfarlane, GJ, Subcritical wave wake unsteadiness, International Journal of Maritime Engineering, 153, (A3) pp. 153-161. ISSN 1479-8751 (2011) [Refereed Article]

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Copyright 2011 Royal Institution of Naval Architects

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DOI: doi:10.3940/rina.ijme.2011.a3.201


Vessel wave wake in deep water is well understood, shallow water less so, specifically the effect of restricted water. This operational zone is highly dynamic and non-linear in nature, thus being worthy of closer examination. The paper reviews the primary mechanisms for unsteadiness in wave wake: starting acceleration and soliton generation. A comprehensive set of experiments was conducted using an NPL catamaran hull form to investigate unsteadiness in both wave height and wave angle. The results show that the unsteadiness was primarily due to soliton generation, and that blockage has a significant effect. As a result, additional metrics, aimed at defining shallow water effects in the transcritical region, are proposed.

Item Details

Item Type:Refereed Article
Keywords:vessel wave wake, restricted water, soliton generation, NPL catamaran hull, transcritical region
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Transport
Objective Group:Water transport
Objective Field:Domestic passenger water transport (e.g. ferries)
UTAS Author:Robbins, A (Dr Alexander Robbins)
UTAS Author:Thomas, GA (Professor Giles Thomas)
UTAS Author:Renilson, MR (Professor Martin Renilson)
UTAS Author:Macfarlane, GJ (Associate Professor Gregor MacFarlane)
ID Code:75702
Year Published:2011
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2012-02-09
Last Modified:2017-11-03
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