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Some Unsteady Fluid Forces on Pump Impellers

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Title Some Unsteady Fluid Forces on Pump Impellers
 
Creator Miskovish, R. S.
Brennen, C. E.
 
Subject Caltech Library Services
 
Description Spectral analyses of all the forces and moments acting on a typical centrifugal pump impeller/volute combination are presented. These exhibit shaft frequencies, blade passing frequencies, and beat frequencies associated with a whirl motion imposed on the shaft in order to measure rotordynamic forces. Among other features the unsteady thrust was found to contain a surprisingly large blade passing harmonic. While previous studies have explored the magnitudes of the steady fluid-induced radial forces and the fluid-induced rotordynamic forces for this typical centrifugal pump impeller/volute combination, this paper presents information on the steady bending moments and rotordynamic moments due to the fluid flow. These imply certain axial locations for the lines of action of the radial and rotordynamic forces. Data on the lines of action are presented and allow inferences on the sources of the forces.
 
Date 1992-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://authors.library.caltech.edu/130/1/MIS115.pdf
Miskovish, R. S. and Brennen, C. E. (1992) Some Unsteady Fluid Forces on Pump Impellers. Journal of Fluids Engineering, 114 (4). pp. 632-637. ISSN 0098-2202. http://resolver.caltech.edu/CaltechAUTHORS:MISjfe92 <http://resolver.caltech.edu/CaltechAUTHORS:MISjfe92>
 
Relation http://resolver.caltech.edu/CaltechAUTHORS:MISjfe92
http://authors.library.caltech.edu/130/