Measurement of Heat Flux and Pressure in a Turbine Stage

[+] Author and Article Information
M. G. Dunn

Aerodynamic Research Dept., Calspan Advanced Technology Center, Buffalo, N.Y.

A. Hause

Aero-Propulsion Laboratory, Air Force Systems Command, Wright-Patterson Air Force Base, Ohio

J. Eng. Power 104(1), 215-223 (Jan 01, 1982) (9 pages) doi:10.1115/1.3227253 History: Received December 11, 1980; Online September 28, 2009


Selected portions of the first stage stationary inlet nozzle, shroud, and rotor of the AiResearch TFE 731-2 turbine were instrumented with thin-film heat-transfer gages and heat-flux measurements were performed using a shock tunnel as a source of high-temperature, high-pressure gas. Experiments were performed over a range of Reynolds numbers, based on mid-annular stator chord, from 1.6 × 105 to 3.1 × 105 and corrected speeds from approximately 70–106 percent. The full-stage heat-flux results are compared to our previous measurements obtained with a stator only, in the absence of a rotor. The previous results are in good agreement with the full-stage data for the tip end-wall region, but they are significantly less than the full-stage results for the stator airfoil. Pressure measurements were obtained throughout the model and these results are shown to be in excellent agreement with the steady-state rig data supplied to us by AiResearch for this turbine. Heat-flux measurements are also presented for the stationary shroud as a function of rotor mid-annular chord. The shroud heat-flux data are shown to be in excess of the rotor blade results. Rotor-tip heat-flux measurements are shown to be slightly greater than the shroud results.

Copyright © 1982 by ASME
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