Escort tug performance prediction: a CFD method

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dc.contributor.author Smoker, Brendan
dc.date.accessioned 2012-12-20T19:31:52Z
dc.date.available 2012-12-20T19:31:52Z
dc.date.copyright 2012 en_US
dc.date.issued 2012-12-20
dc.identifier.uri http://hdl.handle.net/1828/4380
dc.description.abstract As the demand for energy continues to increase around the world, more vessels used in the transport of energy, such as Liquid Natural Gas (LNG) and crude oil tankers are being built to transport energy to market overseas. The escort tug has been developed in order to assist in the safe transit of such vessels in confined waterways. Designed to apply emergency braking and steering forces to the stern of a tanker while underway, an escort tug features a hull shape that generates large hydrodynamic lift and drag forces when operating at high angles of attack, this is known as indirect mode. This escorting mode is highly effective at speeds 8 knots and above, often generating towline forces well in excess of bollard pull. Escort performance prediction is a vital aspect of the design of escort tugs. It is important to know a priori if a design will meet the necessary performance criteria. In the past, performance predictions have relied heavily on model testing and empirical methods. With the recent emergence of Computational Fluid Dynamics (CFD) as a commercially viable design tool for naval architects, extensive escort performance predictions can now be carried out more accurately in less time and at less cost than was previously possible. This thesis describes the methodology of a CFD based escort performance prediction method that is accurate and cost effective. en_US
dc.language English eng
dc.language.iso en en_US
dc.subject marine en_US
dc.subject scaling effects en_US
dc.subject turbulence en_US
dc.subject ITTC en_US
dc.subject indirect mode en_US
dc.subject indirect escort en_US
dc.subject indirect steering en_US
dc.subject indirect braking en_US
dc.subject transverse arrest en_US
dc.subject ASD en_US
dc.subject tanker en_US
dc.subject oil safety en_US
dc.subject staple en_US
dc.subject skeg en_US
dc.subject Z-drive en_US
dc.subject bollard pull en_US
dc.subject escort butterfly plot en_US
dc.subject STAR-CCM+ en_US
dc.subject NSERC en_US
dc.title Escort tug performance prediction: a CFD method en_US
dc.type Thesis en_US
dc.contributor.supervisor Oshkai, Peter
dc.degree.department Dept. of Mechanical Engineering en_US
dc.degree.level Master of Applied Science M.A.Sc. en_US
dc.rights.temp Available to the World Wide Web en_US
dc.description.scholarlevel Graduate en_US

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