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Linearized Dynamics of Bubbly and Cavitating Flows in Cylindrical Ducts

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Title Linearized Dynamics of Bubbly and Cavitating Flows in Cylindrical Ducts
 
Creator d'Auria, Fabrizio
d'Agostino, Luca
Brennen, Christopher E.
 
Subject Caltech Library Services
 
Description The present work investigates the dynamics of the three-dimensional, unsteady flow of a bubbly mixture in a cylindrical duct subject to a periodic pressure excitation at one end. The results are then applied to the case of the idealized pressure excitation generated by the rotor stage of a turbomachine with the objective of understanding the dynamics of an inlet or discharge duct filled with bubbly liquid. The flow displays various regimes (subsonic, supersonic and super-resonant), with radiacally different propagation characteristics. Depending on the dispersion of the gaseous phase in the bubbly mixture and the angular speed of the turbomachine, the dynamic effects due to the bubble response can be significant, and the flow no longer behaves as a homogeneous barotropic fluid, as is commonly assumed. Examples are presented to illustrate the influence of various flow parameters.
 
Publisher American Society of Mechanical Engineers
 
Date 1994
 
Type Book Section
PeerReviewed
 
Format application/pdf
 
Identifier http://authors.library.caltech.edu/90/1/DAU140.pdf
d'Auria, Fabrizio and d'Agostino, Luca and Brennen, Christopher E. (1994) Linearized Dynamics of Bubbly and Cavitating Flows in Cylindrical Ducts. In: Cavitation and Multiphase Flow Forum. Fluids Engineering Division. Vol.FED-19. No.194. American Society of Mechanical Engineers , New York, pp. 59-66. http://resolver.caltech.edu/CaltechAUTHORS:DAUcmff94 <http://resolver.caltech.edu/CaltechAUTHORS:DAUcmff94>
 
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