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Overtip Choking and Its Implications on Turbine Blade-Tip Aerodynamic Performance

Abstract:

At engine representative flow conditions a significant portion of flow over a high-pressure turbine blade tip is transonic. In the present work, the choking-flow behavior and its implications on overtip leakage-flow loss generation are computationally analyzed. An extensively developed Reynolds-averaged Navier-Stokes code (HYDRA) is adopted. First, a high-speed linear-cascade validation case is introduced, and the computations are compared with the experimental data to identify and establish ...

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Publication status:
Published

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Publisher copy:
10.2514/1.B34112

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Institution:
University of Oxford
Department:
Oxford, MPLS, Engineering Science
Journal:
JOURNAL OF PROPULSION AND POWER
Volume:
27
Issue:
5
Pages:
1008-1014
Publication date:
2011
DOI:
ISSN:
0748-4658
URN:
uuid:b2376f3f-8e16-432f-934e-f743ccb5b8eb
Source identifiers:
198908
Local pid:
pubs:198908
Language:
English

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