This paper presents a detailed description of an analysis technique and an application of this technique to obtain time-resolved heat flux for the blade of a Garrett TFE 731-2 hp full-stage rotating turbine. A shock tube is used as a short-duration source of heated air and platinum thin-film gages are used to obtain the heat-flux measurements. To obtain the heat-flux values from the thin-film gage temperature histories, a finite-difference procedure has been used to solve the heat equation, with variable thermal properties. The data acquisition and the data analysis procedures are described in detail and then their application is illustrated for three midspan locations on the blade. The selected locations are the geometric stagnation point, 32.7 percent wetted distance on the suction surface, and 85.5 percent wetted distance on the suction surface. For these measurements, the turbine was operating at the design flow function and very near 100 percent corrected speed. The vane–blade axial spacing was consistent with the engine operating configuration. The results demonstrate that the magnitude of the heat-flux fluctuation resulting from the vane–blade interaction is large by comparison with the time-averaged heat flux at all locations investigated. The magnitude of the fluctuation is greatest in the stagnation region and decreases with increasing wetted distance along the surface. A Fourier analysis by FFT of a portion of the heat-flux record illustrates that the dominant frequencies occur at the wake-cutting frequency and its harmonics.
Skip Nav Destination
Article navigation
July 1986
Research Papers
Heat-Flux Measurements for the Rotor of a Full-Stage Turbine: Part II—Description of Analysis Technique and Typical Time-Resolved Measurements
M. G. Dunn,
M. G. Dunn
Calspan–UB Research Center, Buffalo, NY 14225
Search for other works by this author on:
W. K. George,
W. K. George
Calspan–UB Research Center, Buffalo, NY 14225
Search for other works by this author on:
W. J. Rae,
W. J. Rae
Calspan–UB Research Center, Buffalo, NY 14225
Search for other works by this author on:
S. H. Woodward,
S. H. Woodward
Calspan–UB Research Center, Buffalo, NY 14225
Search for other works by this author on:
J. C. Moller,
J. C. Moller
Calspan–UB Research Center, Buffalo, NY 14225
Search for other works by this author on:
P. J. Seymour
P. J. Seymour
Calspan–UB Research Center, Buffalo, NY 14225
Search for other works by this author on:
M. G. Dunn
Calspan–UB Research Center, Buffalo, NY 14225
W. K. George
Calspan–UB Research Center, Buffalo, NY 14225
W. J. Rae
Calspan–UB Research Center, Buffalo, NY 14225
S. H. Woodward
Calspan–UB Research Center, Buffalo, NY 14225
J. C. Moller
Calspan–UB Research Center, Buffalo, NY 14225
P. J. Seymour
Calspan–UB Research Center, Buffalo, NY 14225
J. Turbomach. Jul 1986, 108(1): 98-107 (10 pages)
Published Online: July 1, 1986
Article history
Received:
January 13, 1986
Online:
November 9, 2009
Connected Content
Citation
Dunn, M. G., George, W. K., Rae, W. J., Woodward, S. H., Moller, J. C., and Seymour, P. J. (July 1, 1986). "Heat-Flux Measurements for the Rotor of a Full-Stage Turbine: Part II—Description of Analysis Technique and Typical Time-Resolved Measurements." ASME. J. Turbomach. July 1986; 108(1): 98–107. https://doi.org/10.1115/1.3262030
Download citation file:
Get Email Alerts
Development of Compact and Hermetic Organic Rankine Cycle Turbine Generator With Upgraded Cooling Capability
J. Turbomach (September 2025)
Unsteadiness in the Secondary Flows of a High-Speed Low-Pressure Turbine Cascade With Unsteady Wakes and Purge Flow
J. Turbomach (September 2025)
Design and Analysis of a Liftfan for eVTOL Aircraft
J. Turbomach (September 2025)
Related Articles
Phase-Resolved Heat-Flux Measurements on the Blade of a Full-Scale Rotating Turbine
J. Turbomach (January,1989)
Heat-Flux Measurements for the Rotor of a Full-Stage Turbine: Part I—Time-Averaged Results
J. Turbomach (July,1986)
Time-Averaged Heat Transfer and Pressure Measurements and Comparison With Prediction for a Two-Stage Turbine
J. Turbomach (January,1994)
Related Proceedings Papers
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Introduction
Turbine Aerodynamics: Axial-Flow and Radial-Flow Turbine Design and Analysis
Control and Operational Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential