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Experimental Measurements of Hydrodynamic Stiffness Matrices for a Centrifugal Pump Impeller

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Title Experimental Measurements of Hydrodynamic Stiffness Matrices for a Centrifugal Pump Impeller
 
Creator Chamieh, D. S.
Acosta, A. J.
Brennen, C. E.
Caughey, T. K.
Franz, R.
 
Subject Caltech Library Services
 
Description The objective of the Rotor Force Test Facility at the California Institute of Technology is to artificially orbit the center of rotation of an impeller enclosed within a volute over a range of frequencies from zero to synchronous and to measure the resulting forces on the impeller. This paper reports preliminary data from the first stage experiments in which the shaft is orbited at low frequency. Steady volute forces along with stiffness matrices due to the change in position of the rotor center are measured. Static pressure taps around the volute are used to obtain volute pressure distributions for various fixed positions of the impeller center and for various flow rates. Static pressure forces are calculated from these pressure distributions allowing a more complete analysis of the components of the impeller forces. Comparison is made with various existing theoretical and experimental results.
 
Publisher National Aeronautics and Space Administration
 
Contributor Childs, Dara W.
Vance, John M.
Hendricks, Robert C.
 
Date 1982
 
Type Book Section
PeerReviewed
 
Format application/pdf
 
Identifier http://authors.library.caltech.edu/204/1/CHA055.pdf
Chamieh, D. S. and Acosta, A. J. and Brennen, C. E. and Caughey, T. K. and Franz, R. (1982) Experimental Measurements of Hydrodynamic Stiffness Matrices for a Centrifugal Pump Impeller. In: Rotordynamic Instability Problems in High-Performance Turbomachinery - 1982. NASA Conference Publication. No.CP-2250. National Aeronautics and Space Administration , Washington, DC, USA, pp. 382-398. http://resolver.caltech.edu/CaltechAUTHORS:CHAriphpt82 <http://resolver.caltech.edu/CaltechAUTHORS:CHAriphpt82>
 
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http://authors.library.caltech.edu/204/