The symmetrical wakes beyond a guide vane cascade consisting of curved and flat plates with blunt trailing edges were investigated as far as the excited dynamic stresses in the blades and the vortex Strouhal number are concerned. The results reveal that the flat plate is more liable to be damaged by the Karman vortex street than the curved plate. However, the vortex street can be effectively suppressed by giving the trailing edge an asymmetrical form. It will be shown that this suppression orginates from the difference of the vortex strengths in the two rows of the vortex street, causing the rapid degeneration of the vortices. This leads to the suppression of the reinforcement of the vortex strength by the lock-in because of lack of stable vortex region.
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August 1976
This article was originally published in
Journal of Engineering for Industry
Research Papers
Guide Vane Vibrations Caused by Wakes and Blower Noise—Part 1: The Vortex Degeneration in the Asymmetrical Wakes
Y. N. Chen,
Y. N. Chen
Vibration and Acoustic Laboratory, Sulzer Brothers Ltd., Winterthur, Switzerland
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G. Baylac,
G. Baylac
Electricite´ de France, Direction des Etudes et Recherches, Chatou, France
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R. Walther
R. Walther
Nuclear Engineering Division, Sulzer Brothers Ltd., Winterthur, Switzerland
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Y. N. Chen
Vibration and Acoustic Laboratory, Sulzer Brothers Ltd., Winterthur, Switzerland
G. Baylac
Electricite´ de France, Direction des Etudes et Recherches, Chatou, France
R. Walther
Nuclear Engineering Division, Sulzer Brothers Ltd., Winterthur, Switzerland
J. Eng. Ind. Aug 1976, 98(3): 948-955
Published Online: August 1, 1976
Article history
Received:
May 27, 1975
Online:
July 15, 2010
Citation
Chen, Y. N., Baylac, G., and Walther, R. (August 1, 1976). "Guide Vane Vibrations Caused by Wakes and Blower Noise—Part 1: The Vortex Degeneration in the Asymmetrical Wakes." ASME. J. Eng. Ind. August 1976; 98(3): 948–955. https://doi.org/10.1115/1.3439057
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