Full Content is available to subscribers

Subscribe/Learn More  >

Advanced Doublewall Cooling System Development for Turbine Vanes

[+] Author Affiliations
Daniele Coutandin

Avio S.p.A., Torino, Italy

Simone Taddei, Bruno Facchini

Università degli Studi di Firenze, Firenze, Italy

Paper No. GT2006-90784, pp. 623-632; 10 pages
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer, Parts A and B
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4238-X | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME


The requirements of always higher thermal performances of turbine vanes and blades push all the aeroengine industries to invest in new cooling technologies. AVIO, the italian aerospace propulsion industry, developed during the last three years an innovative cooling systems for stationary components, based on the doublewall technology, that allow to enhance the internal heat exchange optimising the cooling air distribution. The thermal behaviour of the system has been studied numerically using the standard integrated design methodologies. Some components have been then manufactured in real geometries and finally tested at high temperature in the AVIO’s burner rig. Aim of this work is to present the cooling design methodology used, the manufacturing phases, and to compare the measured thermal efficiency with the theoretical ones. The experimental tests of the blade at high temperature burner rig allowed to determine the effectiveness of the cooling system and validate the integrated aero-thermal numerical procedures. Experimental values of effectiveness are reported in relation with the numerical expected data. Therefore a comparison between this new technology and standard ones based on impingements and turbulated channels is taken into account. Overall numerical results have been found in good agreement with the experimental data and indicate that doublewall cooling system can provide heat transfer enhancements and higher thermal performance if compared with conventional cooling methods with potential benefits on cooling reduction and streamwise uniformity in heat transfer coefficients. Further future improvements and developments are here preliminary proposed.

Copyright © 2006 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