Lock plates are used on some turbine disc assemblies to secure the location of the blades. The pressure ratio across blade roots and the associated clearances inevitably means that there is some leakage through the abutting mating surfaces of the lock plates. This flow is ejected into the corresponding stator well or rotor-stator disc wheelspace. The aim of this study was to investigate the level of penetration of this flow and therefore its potential impact on and interaction with the wheelspace flow and associated heat transfer. Given the low mass flow associated with this leakage, typically less than one percent of the mainstream annulus flow, generation of the validation data was undertaken using a representative wind tunnel slot array. This paper reports the experimental data and corresponding CFD flow predictions and discusses the resultant insight obtained. For the experiments and associated modeling undertaken it was found that the injected flow did not penetrate the cross flow boundary layer for either normal or inclined injection.
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ASME Turbo Expo 2006: Power for Land, Sea, and Air
May 8–11, 2006
Barcelona, Spain
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-4238-X
PROCEEDINGS PAPER
An Investigation of Lock Plate Flow
Peter Childs,
Peter Childs
University of Sussex, Brighton, UK
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Carlos Pizarro de la Fuente
Carlos Pizarro de la Fuente
Industria de Turbo Propulsores S.A., Madrid, Spain
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Peter Childs
University of Sussex, Brighton, UK
Carlos Pizarro de la Fuente
Industria de Turbo Propulsores S.A., Madrid, Spain
Paper No:
GT2006-90652, pp. 1463-1471; 9 pages
Published Online:
September 19, 2008
Citation
Childs, P, & Pizarro de la Fuente, C. "An Investigation of Lock Plate Flow." Proceedings of the ASME Turbo Expo 2006: Power for Land, Sea, and Air. Volume 3: Heat Transfer, Parts A and B. Barcelona, Spain. May 8–11, 2006. pp. 1463-1471. ASME. https://doi.org/10.1115/GT2006-90652
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