Flow and heat transfer at the hub endwall of inlet vane passages - Experiments and simulations

R. P. Roy, Kyle Squires, M. Gerendas, S. Song, W. J. Howe, A. Ansari

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

23 Scopus citations

Abstract

The heat transfer distribution on the hub endwall of a model turbine vane passage was studied experimentally and by numerical simulation. The experiments were carried out in a low speed wind tunnel featuring a linear cascade of scaled-up inlet vanes. Measurements were made both without and with secondary air injection through slots located upstream of the vane leading edge using the transient liquid crystal technique. Results are presented for Recax, in = 6.76 × 104 and blowing ratios of zero (no secondary air injection) and 1.3. Simulations were performed on unstructured grids using Fluent. A near-wall description of the flow field was employed. Turbulent stresses in the momentum equations were closed using the Spalart-Almaras model, and the turbulent heat flux in the thermal energy equation was closed using a constant turbulent Prandfl number. The agreement between the measurements and the simulations is generally good.

Original languageEnglish (US)
Title of host publicationHeat Transfer; Electric Power; Industrial and Cogeneration
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791878569, 9780791878569
DOIs
StatePublished - 2000
EventASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000 - Munich, Germany
Duration: May 8 2000May 11 2000

Publication series

NameProceedings of the ASME Turbo Expo
Volume3

Other

OtherASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000
Country/TerritoryGermany
CityMunich
Period5/8/005/11/00

ASJC Scopus subject areas

  • Engineering(all)

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