RESEARCH PAPERS: Vibration and Sound

Improve the Stability of Rotor Subjected to Fluid Leakage by Optimum Diameters Design

[+] Author and Article Information
J. H. Wang, F. M. Shih

Department of Power Mechanical Engineering, National Tsing-Hua University, Hsinchu, Taiwan 30043, R.O.C.

J. Vib. Acoust 112(1), 59-64 (Jan 01, 1990) (6 pages) doi:10.1115/1.2930099 History: Received July 20, 1988; Online June 17, 2008


For high performance turbomachinery, the fluid leakage in the shroud of the blades and the labyrinth seal may cause instability and limit the output rating. In this work, an optimization technique has been used to find the optimum diameters of shaft elements so that the optimized rotor can sustain maximum fluid leakage excitation. The results show that, even without the increase of total mass of the rotor system, the threshold performance of rotor-bearing systems can be significantly improved by slight modification of the shaft diameters.

Copyright © 1990 by The American Society of Mechanical Engineers
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