Franz, R. and Arndt, N. and Caughey, T. K. and Brennen, C. E. and Acosta, A. J. (1987) Rotordynamic Forces on Centrifugal Pump Impellers. In: Proceedings of the Eighth Conference on Fluid Machinery. Akadémiai Kiadó , Budapest, Hungary, pp. 252-258. ISBN 9630546477 http://resolver.caltech.edu/CaltechAUTHORS:FRAecfm87
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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.
|Item Type:||Book Section|
|Additional Information:||The authors are indebted to the NASA George Marshall Space Flight Center for continued sponsorship of this research under contract NAS8-33108.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Christopher Brennen|
|Deposited On:||07 Jan 2005|
|Last Modified:||26 Dec 2012 08:39|
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