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. https://resolver.caltech.edu/CaltechAUTHORS:BRApftt80
![]() | There is a more recent version of this item available. |
![]() |
PDF
- Published Version
See Usage Policy. 1MB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:BRApftt80
Abstract
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.
Item Type: | Book Section |
---|---|
Record Number: | CaltechAUTHORS:BRApftt80 |
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:BRApftt80 |
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
ID Code: | 45 |
Collection: | CaltechAUTHORS |
Deposited By: | Christopher Brennen |
Deposited On: | 19 Aug 2004 |
Last Modified: | 02 Oct 2019 22:16 |
Available Versions of this Item
- Auto-Oscillation of Cavitating Inducers. (deposited 19 Aug 2004) [Currently Displayed]
Repository Staff Only: item control page