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The design of three-dimensional turbine blades combined with profiled endwalls.

Bagshaw, D.A and Ingram, G.L. and Gregory-Smith, D.G. and Stokes, M.R. and Harvey, N.W. (2008) 'The design of three-dimensional turbine blades combined with profiled endwalls.', Proceedings of the Institution of Mechanical Engineers, Part A : journal of power and energy., 222 (1). pp. 93-102.

Abstract

This paper describes a novel design for reducing secondary flow in turbines. The design builds on previous work on non-axisymmetric profiled endwalls by combining them with three-dimensional blade design. Profiled endwalls have been shown to effectively reduce secondary flow but have often been used as a ‘retrofit’ application where the blade design is left unchanged. In the current paper reverse compound lean is used to prepare the blade row for the application of profiled endwalls. Computational fluid dynamic predictions ofthe expected performance show benefits over and above those of applying profiled endwalls to the blade row alone. The paper describes the design of the novel geometry for the so-called ‘Durham Cascade’ and gives predictions of the expected performance.

Item Type:Article
Keywords:Secondary flow, Profiled endwalls, Turbomachinery, Blade design, Turbines, Nonaxisymmetric.
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1243/09576509JPE477
Record Created:26 Oct 2011 12:20
Last Modified:26 Oct 2011 14:37

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