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Effect of fluid forces on rotor stability of centrifugal compressors and pumpsA simple two dimensional model for calculating the rotordynamic effects of the impeller force in centrifugal compressors and pumps is presented. It is based on potential flow theory with singularities. Equivalent stiffness and damping coefficients are calculated for a machine with a vaneless volute formed as a logarithmic spiral. It is shown that for certain operating conditions, the impeller force has a destablizing effect on the rotor.
Document ID
19800021219
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Colding-Jorgensen, J.
(Technical Univ. of Denmark Copenhagen, Denmark)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Publication Information
Publication: NASA. Lewis Res. Center Rotordyn. Instability Probl. in High-Performance Turbomachinery
Subject Category
Mechanical Engineering
Accession Number
80N29720
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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