In axial-flow turbomachines considerable dynamic blade loads and noise production occur as a result of the unsteady blade row interaction between rotor and stator blades. This paper presents results of midspan measurements of the dynamic pressure distribution on the stator blade surface (fixed number of blades) for various rotor-blade numbers and various axial clearances between rotor and stator. For this purpose, one stator blade had been provided with eleven semiconductor pressure transducers in the midspan section. Simultaneously, the sound pressure level was measured at two axial distances downstream of the stator by four condensator microphones distributed along the circumference in each of the two sections and mounted flush with the wall surface. The wake-flow distribution downstream of the rotor could be obtained by a rotating three-hole pressure probe. The results of the corresponding dynamic pressure-measurements and noise measurements are discussed and compared with results from theory.
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July 1982
This article was originally published in
Journal of Engineering for Power
Research Papers
The Influence of Blade Number Ratio and Blade Row Spacing on Axial-Flow Compressor Stator Blade Dynamic Load and Stage Sound Pressure Level
H. E. Gallus,
H. E. Gallus
Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany
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H. Grollius,
H. Grollius
Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany
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J. Lambertz
J. Lambertz
Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany
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H. E. Gallus
Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany
H. Grollius
Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany
J. Lambertz
Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany
J. Eng. Power. Jul 1982, 104(3): 633-641 (9 pages)
Published Online: July 1, 1982
Article history
Received:
December 10, 1980
Online:
September 28, 2009
Citation
Gallus, H. E., Grollius, H., and Lambertz, J. (July 1, 1982). "The Influence of Blade Number Ratio and Blade Row Spacing on Axial-Flow Compressor Stator Blade Dynamic Load and Stage Sound Pressure Level." ASME. J. Eng. Power. July 1982; 104(3): 633–641. https://doi.org/10.1115/1.3227326
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