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Effect of rudder angle on propeller wash velocities at a seabed

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Ryan, D, Hamill, G.A. and Johnston, H. T. (2009) Effect of rudder angle on propeller wash velocities at a seabed. Water and Maritime Engineering, 162 (MA1). pp. 27-38. [Journal article]

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URL: http://www.icevirtuallibrary.com/content/article/10.1680/maen.2009.162.1.27

DOI: 10.1680/maen.2009.162.1.27


This paper deals with an experimental investigation intothe velocity distribution downstream of a propeller,operating at bollard pull conditions and in the presence ofa mobile sediment bed. Previous investigations eitherignored the effect of a rudder in the wash or consideredonly its influence on an unconfined jet. The velocityprofiles within the jet produced by a rotating propellerwith a rudder present were measured at a mobile bed andcompared to currently available predictive equations.The velocity distribution profiles in the jet, influenced bybed proximity, were found not to comply with currentpredictive methods. The velocity distributions measuredwithin the jet were found to be complex and nonsymmetrical.To provide a basic velocity predictive tool, aneural network analysis toolbox within Matlab wasutilised and trained using the experimental data.

Item Type:Journal article
Keywords:Scour, Propeller, Jet, Neural Network.
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Centre for Sustainable Technologies (CST)
ID Code:13545
Deposited By:Dr Donal Ryan
Deposited On:10 May 2010 14:10
Last Modified:10 May 2010 14:10

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