Published September 1, 1989
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Impeller-Induced Rotor-Dynamic Forces
Abstract
The flow through and around the rotor of a turbomachine exerts a force on the rotor and, hence, rotor shaft and bearing system. In some circumstances this force may lead to excitation of shaft whirl in the direction of impeller rotation. Recent international research of this phenomenon is briefly reviewed; these findings suggest that turbomachines intended to operate well above the first critical speed should take the effect into account.
Additional Information
As with most university research, we depend upon our hard working students for inspired work. We would like to thank Dimitri Chamieh, Belgacem Jery, Ron Franz, Scott Miscovish, Michael Karyeaclis and Fei Zhuang for their untiring efforts. This work was supported by the National Aeronautics and Space Administration under contract NAS8-33108 with Dr. Henry Stinson as technical monitor. This support is gratefully acknowledged.Files
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