A lifting surface theory is developed for unsteady three-dimensional flow in rotating subsonic, transonic and supersonic annular cascades with fluctuating blade loadings. Application of a finite radial eigenfunction series approximation not only affords a clear insight into the three-dimensional structures of acoustic fields but also provides mathematical expressions advantageous to numerical work. The theory is applied to oscillating blades. Numerical examples are presented to demonstrate three-dimensional effects on aerodynamic characteristics. Three-dimensional effects in supersonic cascades are generally small and strip theory predicts local aerodynamic forces as well as total aerodynamic forces with good accuracy. In transonic flow, however, the strip theory approximation breaks down near the sonic span station and three-dimensional effects are of primary importance.
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January 1983
This article was originally published in
Journal of Engineering for Power
Research Papers
Three-Dimensional Aerodynamic Characteristics of Oscillating Supersonic and Transonic Annular Cascades
M. Namba,
M. Namba
Department of Aeronautical Engineering, Kyushu University, Fukuoka, Japan
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A. Ishikawa
A. Ishikawa
Department of Aeronautical Engineering, Kyushu University, Fukuoka, Japan
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M. Namba
Department of Aeronautical Engineering, Kyushu University, Fukuoka, Japan
A. Ishikawa
Department of Aeronautical Engineering, Kyushu University, Fukuoka, Japan
J. Eng. Power. Jan 1983, 105(1): 138-146 (9 pages)
Published Online: January 1, 1983
Article history
Received:
December 10, 1981
Online:
September 28, 2009
Citation
Namba, M., and Ishikawa, A. (January 1, 1983). "Three-Dimensional Aerodynamic Characteristics of Oscillating Supersonic and Transonic Annular Cascades." ASME. J. Eng. Power. January 1983; 105(1): 138–146. https://doi.org/10.1115/1.3227374
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