0

Full Content is available to subscribers

Subscribe/Learn More  >

Injection Coolant Isolation Curtain to Reduce Turbine Ingress Heating

[+] Author Affiliations
Dong-Chun Choi, David L. Rhode

Texas A&M University, College Station, TX

Robert W. Sunshine

Siemens Westinghouse Power Corporation, Jupiter, FL

Paper No. GT2005-69090, pp. 1227-1235; 9 pages
doi:10.1115/GT2005-69090
From:
  • ASME Turbo Expo 2005: Power for Land, Sea, and Air
  • Volume 3: Turbo Expo 2005, Parts A and B
  • Reno, Nevada, USA, June 6–9, 2005
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4726-8 | eISBN: 0-7918-3754-8
  • Copyright © 2005 by ASME

abstract

The advanced strategy to reduce the turbine ingress heating and thus the coolant requirement by injecting a “coolant isolation curtain” was developed numerically using a 3-D CFD model under steady state conditions. The coolant isolation curtain was applied under the nozzle guide vane platform for the forward cavity of a turbine stage of a large gas turbine engine. Specifically, the isolation curtain serves to isolate the hot mainstream gas from the turbine outer region. For comparison purposes, when the baseline design and the injection curtain design have the same total coolant mass flow, the maximum temperature T*max of the injection curtain design was reduced by 0.23, 0.12 and 0.12, respectively, for the outer cavity, outer rotor adiabatic wall and outer stator adiabatic wall compared to that of the baseline design. Upon adjusting the feed slot coolant of the baseline design to match the outer cavity T*max , for example, of the injection curtain design, the reduction of dimensionless total coolant per stage from applying the injection curtain was estimated as 0.0038. Also a more uniform adiabatic wall temperature distribution along the outer rotor and stator surfaces was observed by using the coolant isolation curtain.

Copyright © 2005 by ASME
Topics: Coolants , Turbines , Heating

Figures

Tables

Interactive Graphics

Video

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

NOTE:
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