Convective transport phenomena on the suction surface of a turbine blade including the influence of secondary flows near the endwall

P. H. Chen, R. J. Goldstein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A naphthalene sublimation technique is employed to study the mass transfer distribution on the suction (convex) surface of a simulated turbine blade. Comparison with a heat transfer study shows good agreement in the general trends in the region of two-dimensional flow on the blade. Near the endwall, local convective coefficients on the suction surface are obtained at 4608 locations from two separate runs. The secondary flows in the passage significantly affect the mass transfer rate on the suction surface and their influence extends to a height of 75% of the chord length, from the endwall, in the trailing edge region. The mass transfer rate in the region near the endwall is extremely high due to small but intense vortices. Thus, a large variation in the mass transfer distribution occurs on the suction surface, from a mass transfer Stanton number of 0.0005 to a maximum of 0.01. In the two-dimensional flow region, the mass transfer distributions at two different Reynolds number are presented.

Original languageEnglish (US)
Title of host publicationHeat Transfer; Electric Power; Industrial and Cogeneration
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791879016
DOIs
StatePublished - 1991
EventASME 1991 International Gas Turbine and Aeroengine Congress and Exposition, GT 1991 - Orlando, United States
Duration: Jun 3 1991Jun 6 1991

Publication series

NameProceedings of the ASME Turbo Expo
Volume4

Other

OtherASME 1991 International Gas Turbine and Aeroengine Congress and Exposition, GT 1991
CountryUnited States
CityOrlando
Period6/3/916/6/91

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