0
TECHNICAL PAPERS

Cooling the Tip of a Turbine Blade Using Pressure Side Holes—Part II: Heat Transfer Measurements

[+] Author and Article Information
J. R. Christophel, K. A. Thole

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

F. J. Cunha

Pratt & Whitney, United Technologies Corporation, East Hartford, CT 06108

J. Turbomach 127(2), 278-286 (May 05, 2005) (9 pages) doi:10.1115/1.1811096 History: Received October 01, 2003; Revised March 01, 2004; Online May 05, 2005
Copyright © 2005 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Test section viewed from top showing adjustment capabilities and infrared windows
Grahic Jump Location
Tip geometries tested: (a) the baseline geometry (filled-in dirt purge holes) and (b),(c) approximate hole geometry with the dirt purge holes
Grahic Jump Location
Main tip heat transfer surface showing (a) serpentine passages and (b) detail of main tip heater as placed on the blade surface
Grahic Jump Location
Comparison of experimental data to a fully developed correlation
Grahic Jump Location
Comparison of experimental data to the proposed augmentation factor
Grahic Jump Location
Baseline Nusselt number contour plots for the (a) small and (b) large tip gap
Grahic Jump Location
Nusselt number line plots for the baseline
Grahic Jump Location
Line plots at lines 0 and 3 for baseline cases
Grahic Jump Location
(a)–(c) Line plots for the cooling holes at positions 1, 2, and 3
Grahic Jump Location
Heat transfer augmentation at the camber line for the (a) small and (b) large tip gaps
Grahic Jump Location
Area-averaged heat transfer augmentation for the entire blade tip
Grahic Jump Location
Pressure side plots of NHFR for the small tip gap
Grahic Jump Location
NHFR for all cases at 0.58% and 1% coolant flow
Grahic Jump Location
(a)–(c) Individual line plots of NHFR at different locations along the blade tip
Grahic Jump Location
NHFR levels for camber lines for (a) small and (b) large tip gap settings
Grahic Jump Location
Area-averaged NHFR for full blade tip and for the downstream 70% of tip

Tables

Errata

Discussions

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 Journal Articles
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