Effect of rudder angle on propeller wash velocities at a seabed

doi:10.1680/maen.2009.162.1.27

Effect of rudder angle on propeller wash velocities at a seabed

This article is available for purchase
Please select an item from the below list to be added to the cart:
- Buy Article $40.00
  
  Add to Cart

Authors: G. A. Hamill ¹ ; D. Ryan ² ; H. T. Johnston ¹
+ View affiliations- Hide affiliations

Affiliations: 1: School of Planning, Architecture and Civil Engineering. The Queens University of Belfast Northern Ireland; 2: Omagh Institute of Further Education Omagh, Northern Ireland

Source: Proceedings of the ICE - Maritime Engineering, Volume 162, Issue 1, 01 March 2009 , pages 27 –38

Preview this article:

Effect of rudder angle on propeller wash velocities at a seabed, Page 1 of 2

< Previous page | Next page > /docserver/preview/fulltext/maen162-027-1.gif /docserver/preview/fulltext/maen162-027-2.gif

This paper deals with an experimental investigation into the velocity distribution downstream of a propeller, operating at bollard pull conditions and in the presence of a mobile sediment bed. Previous investigations either ignored the effect of a rudder in the wash or considered only its influence on an unconfined jet. The velocity profiles within the jet produced by a rotating propeller with a rudder present were measured at a mobile bed and compared to currently available predictive equations. The velocity distribution profiles in the jet, influenced by bed proximity, were found not to comply with current predictive methods. The velocity distributions measured within the jet were found to be complex and non-symmetrical. To provide a basic velocity predictive tool, a neural network analysis toolbox within Matlab was utilised and trained using the experimental data.

DOI: 10.1680/maen.2009.162.1.27

ISSN : 1741-7597

E-ISSN : 1751-7737

Document Type: Research Article

Format: PDF,HTML

Keywords: maritime engineering; ports, docks & harbours; waterways & canals

Authors: G. A. Hamill; D. Ryan; H. T. Johnston
Source: Proceedings of the ICE - Maritime Engineering, Volume 162, Issue 1, 01 March 2009 , pages 27 –38

- G. A. Hamill ,J. McGarvery ,D. A. B. Hughes. (2004) Determination of the efflux velocity from a ship's propeller wash. Proceedings of the Institution of Civil Engineers, Maritime Engineering, 2 , 83 - 91
- - 1 onward links are available for this reference.
  - Internal Pub2Web matcher
- M. Fuehrer ,H. Pohl ,K. Romisch. (1987) Propeller jet erosion and stability criteria for bottom protection of various constructions. PIANC Bulletin, 45 - 56
- G. A. Hamill ,J. McGarvery ,D. A. B. Hughes. (2001) The effect of rudder angle on the scouring action produced by the propeller wash of a manoeuvring ship. Journal of the Permanent International Association of Navigation Congresses, 49 - 62
- G. A. Hamill. (1988) The scouring action of the propeller jet produced by a slowly manoeuvring ship. Journal of the Permanent International Association of Navigation Congresses, 85 - 110
- H. J. Verhey ,T. Blockland ,M. P. Bogaerts ,D. Volger ,R. W. Weyde. (1987) Experiences in the Netherlands with quay structures subjected to velocities created by bow thrusters and main propellers of mooring and unmooring ships. PIANC Bulletin, 69 - 88
- S. S. Chatterjee ,S. N. Ghosh. (1980) Submerged horizontal jet erodible bed. Journal of Hydraulics Division, ASCE, 11 , 1765 - 1782
- M. D. Smith. (1993) Neural Networks for Statistical Modelling
- H. N. Hashmi. (1994) Erosion of a Granular Bed at a Quay Wall by a Ship's Screw Wash. PhD thesis
- J. McGarvey. (1996) The Influence of the Rudder on the Hydrodynamics, and the Resulting Bed Scour of a Ship's Screw Wash. PhD thesis
- H. G. Blaauw ,E. J. van de. Kaa. (1978) Erosion of Bottom and Sloping Banks Caused by the Screw Race of Manoeuvring Ships
- W. Berger ,K. Felkel ,M. Hager ,H. Oebius ,E. Schale. (1981) Courant provoque par les bateaux protection des berges et solution pour éviter l'érosion du lit du haut Rhin.
- W. Robakiewicz. (1966) The influence of the action of the jet behind the screw on the bottom. Example of model and field measurements with a trawler B-20. Rosprawy Hydrotechniczne, 177 - 215
- H. Bergh ,K. Cederwall. (1981) Propeller Erosion in Harbours
- M. Fuehrer ,K. Romisch. (1977) Effects of modern ship traffic on islands and ocean waterways and their structures.

/content/article/10.1680/maen.2009.162.1.27

dcterms_subject,pub_keyword

tt

Tools

Sign-in to add to favourites

Resources

Share:

Key:

Effect of rudder angle on propeller wash velocities at a seabed

Site guide:

Subjects: