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Unified Treatment of Flow Instabilities of Turbomachines

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Title Unified Treatment of Flow Instabilities of Turbomachines
 
Creator Tsujimoto, Yoshinobu
Kamijo, Kenjiro
Brennen, Christopher E.
 
Subject Caltech Library Services
 
Description The relationship among four flow instabilities of turbomachines, namely, surge, rotating stall, cavitation surge, and rotating cavitation, is elucidated, using a unified or common model for their analysis. The simplest unifying model was employed in the analysis to focus on the characteristic features of each instability. Moreover, the concentration is on the stability criteria, and hence, the amplitudes are assumed small. Of course, the instabilities often grow to amplitudes comparable with the average value of the flow variable. Flows upstream and downstream of the impeller were assumed to be one dimensional for surge and cavitation surge and to be two dimensional for rotating stall and rotating cavitation, respectively. Viscous effects were taken into consideration in the form of cascade loss. Impeller blade geometry was incorporated in the assumption that the flow is perfectly guided. The peripheral wavelength of the disturbance was assumed to be much larger than the blade pitch.
 
Date 2001-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://authors.library.caltech.edu/155/1/TSU200.pdf
Tsujimoto, Yoshinobu and Kamijo, Kenjiro and Brennen, Christopher E. (2001) Unified Treatment of Flow Instabilities of Turbomachines. Journal of Propulsion and Power, 17 (3). pp. 636-643. ISSN 0748-4658. http://resolver.caltech.edu/CaltechAUTHORS:TSUjpp01 <http://resolver.caltech.edu/CaltechAUTHORS:TSUjpp01>
 
Relation http://resolver.caltech.edu/CaltechAUTHORS:TSUjpp01
http://authors.library.caltech.edu/155/