Auto-Oscillation of Cavitating Inducers
CaltechAUTHORS
View Archive Info| Field | Value | |
| Title |
Auto-Oscillation of Cavitating Inducers
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| Creator |
Braisted, D. M.
Brennen, C. E. |
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| Subject |
Caltech Library Services
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| Description |
This paper presents details of measurements on the instability know as auto-oscillation which occurs in systems with cavitating pumps. Specific measurements are made of onset cavitation number and auto-osciallation frequency for a range of inducers. It has been shown that auto-oscillation is a system instability caused by the active dynamic characteristics of the cavitating pump. A system anslysis is presented which utilized previously measured dynamic transfer functions for the inducers; the resulting predictions of instability are consistent with the observations. Though the onset cavitation number is a function of the entire system it is also show that, given the onset cavitation number, the auto-oscillation frequency is only weakly dependent on the system and primarily a function of the pump dynamics. Detailed measurements of the amplitude and phase of fluctuating pressures and flow rates during auto-oscillation are also presented. These strongly suggest that the pump dynamics are primarily determined by the complicated flow at inlet to the inducer which involves pre-swirl generated by a strong backflow. Some data on the non-linear effect of auto-osciallation on overall mean performance are also presented. |
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| Publisher |
American Society of Mechanical Engineers
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| Contributor |
Bajura, R. A.
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| Date |
1980
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| Type |
Book Section
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://authors.library.caltech.edu/45/1/BRA046.pdf
Braisted, D. M. and Brennen, C. E. (1980) Auto-Oscillation of Cavitating Inducers. In: Polyphase Flow and Transport Technology. American Society of Mechanical Engineers , New York, NY, pp. 157-166. http://resolver.caltech.edu/CaltechAUTHORS:BRApftt80 <http://resolver.caltech.edu/CaltechAUTHORS:BRApftt80> |
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| Relation |
http://resolver.caltech.edu/CaltechAUTHORS:BRApftt80
http://authors.library.caltech.edu/45/ |
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