Full Content is available to subscribers

Subscribe/Learn More  >

Heat Transfer Measurements of Vane Endwall With Film Cooling and Impingement Cooling

[+] Author Affiliations
Xueying Li, Mingfei Li, Jing Ren, Hongde Jiang

Tsinghua University, Beijing, China

Paper No. GT2015-43044, pp. V05BT12A031; 14 pages
  • ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
  • Volume 5B: Heat Transfer
  • Montreal, Quebec, Canada, June 15–19, 2015
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5672-7
  • Copyright © 2015 by ASME


The switch from diffusive combustion to premixed combustion in a modern gas turbine will change the combustor exit temperature profile to a more uniform one. Hot spot may occur from 10% to 90% vane span. This will directly affect the cooling of the first stage vane especially the endwall region. Cooling characteristics and metal temperature prediction of endwall become critical.

A typical endwall configuration with matched non-dimensional parameters to the engine condition was investigated experimentally in this study. Two endwall cooling arrangements at four different coolant to mainstream mass flow ratios (MFR) were tested in a linear cascade. Detailed measurements of aerodynamic, heat transfer coefficient, adiabatic film cooling effectiveness and overall effectiveness of the endwall were performed. The temperature sensitive paint (TSP) and pressure sensitive paint (PSP) were used to acquire these parameters. The conjugate heat transfer characteristic of endwall with film cooling and impingement cooling was discussed. Besides, the influence of coolant mass flow ratio on conjugate heat transfer of endwall was analyzed. The results suggested that for film only case the overall effectiveness increases with the increase of MFR but for the combination case with both film cooling and impingement cooling the growth slows down. 1D and 2D method for overall effectiveness prediction based on experimental data for separate parameters and correlations were also studied.

Copyright © 2015 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In