Aerodynamic Performance of a Transonic Turbine Cascade at Off-Design Conditions-Reference-Cited by-同舟云学术

Aerodynamic Performance of a Transonic Turbine Cascade at Off-Design Conditions

Published:2000-02-01 Issue:3 Volume:123 Page:510-518
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Jouini D. B. M.¹,Sjolander S. A.¹,Moustapha S. H.²

Affiliation:

1. Department of Mechanical & Aerospace Engineering, Carleton University, Ottawa, Ontario, Canada

2. Pratt & Whitney Canada Inc., Longueuil, Quebec, Canada

Abstract

The paper presents detailed measurements of the midspan aerodynamic performance of a transonic turbine cascade at off-design conditions. The measurements were conducted for exit Mach numbers ranging from 0.5 to 1.2, and for Reynolds numbers from 4×105 to 106. The profile losses were measured for incidence values of +14.5 deg, +10 deg, +4.5 deg, 0 deg, and −10 deg relative to design. To aid in understanding the loss behavior and to provide other insights into the flow physics, measurements of blade loading, exit flow angles, trailing-edge base pressures, and the axial velocity density ratio (AVDR) were also made. It was found that the profile losses at transonic Mach numbers can be closely related to the base pressure behavior. The losses were also affected by the AVDR.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/turbomachinery/article-pdf/123/3/510/5940853/510_1.pdf

Reference29 articles.

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2. Rodger, P., Sjolander, S. A., and Moustapha, S. H., 1992, “Establishing Two-Dimensional Flow in a Large-Scale Planar Turbine Cascade,” AIAA Paper 92-3066.

3. Whitehouse, D. R., Moustapha, S. H., and Sjolander, S. A., 1993, “The Effects of Axial Velocity Ratio, Turbulence Intensity, Incidence, and Leading Edge Geometry on the Mid-Span Performance of a Turbine Cascade,” Can. Aeronautics Space J., 39, pp. 150–156.

4. Benner, M. W., Sjolander, S. A., and Moustapha, S. H., 1997, “Influence of Leading-Edge Geometry on Profile Losses in Turbines at Off-Design Incidence: Experimental Results and an Improved Correlation,” ASME J. Turbomach., 119, April pp. 193–200.

5. Moustapha, S. H., Kacker, S. C., and Tremblay, B., 1990, “An Improved Incidence Losses Prediction Method for Turbine Airfoils,” ASME J. Turbomach., 112, pp. 267–276.

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