Rotordynamic Forces on Centrifugal Pump Impellers
- Others:
- Kisbocskói, L.
- Szabo, Á.
Abstract
The asymmetric flow around an impeller in a volute exerts a force upon the impeller. To study the rotordynamic force on an impeller which is vibrating around its machine axis of rotation, the impeller, mounted on a dynamometer, is made to whirl in a circular orbit within the volute. The measured force is expressed as the sum of a steady radial force and an unsteady force due to the eccentric motion of the impeller. These forces were measured in separate tests on a centrifugal pump with radically increased shroud clearance, a two-dimensional impeller, and an impeller with an inducer, the impeller of the HPOTP (High Pressure Oxygen Turbopump) of the SSME (Space Shuttle Main Enginer). In each case, a destabilizing force was observed over a region of positive whirl.
Additional Information
The authors are indebted to the NASA George Marshall Space Flight Center for continued sponsorship of this research under contract NAS8-33108.Files
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Additional details
- Eprint ID
- 209
- Resolver ID
- CaltechAUTHORS:FRAecfm87
- Created
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2005-01-07Created from EPrint's datestamp field
- Updated
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2019-10-02Created from EPrint's last_modified field