Detection of cavitation phenomenon in a centrifugal pump using audible sound
TL;DR: In this article, the authors have shown that there is a discrete frequency tone within the audible noise spectra, at 147 Hz or BPF/2, which is strongly dependent on the cavitation process and its development.
About: This article is published in Mechanical Systems and Signal Processing.The article was published on 2003-11-01. It has received 141 citations till now. The article focuses on the topics: Centrifugal pump & Cavitation.
Citations
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TL;DR: A comprehensive and critical review of the application of AET to condition monitoring and diagnostics of rotating machinery is presented in this article, where the authors present a detailed analysis of the AET application to rotating machinery.
Abstract: One of the earliest documented applications of acoustic emission technology (AET) to rotating machinery monitoring was in the late 1960s. Since then, there has been an explosion in research- and application-based studies covering bearings, pumps, gearboxes, engines, and rotating structures. In this paper we present a comprehensive and critical review to date on the application of AET to condition monitoring and diagnostics of rotating machinery.
313 citations
Cites background from "Detection of cavitation phenomenon ..."
...Cavitation is known to occur more easily at higher flow rates (Cudina, 2003)....
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TL;DR: In this article, an experimental investigation has been carried out in order to evaluate the detection of cavitation in actual hydraulic turbines, based on the analysis of structural vibrations, acoustic emissions and hydrodynamic pressures measured in the machine.
308 citations
TL;DR: The results show that the high-speed jet emitted by non-spherical bubble collapse near the boundary is one of the important factors to cause the destructive erosion pit.
87 citations
TL;DR: In this article, it was shown that there is a discrete frequency tone within the audible noise spectra, which is in strong correlation with development of the cavitation process in the pump.
60 citations
Cites background from "Detection of cavitation phenomenon ..."
...The total noise levels of the pumping set with cavitation in the pump are for approximately 3 and up to 10 dB(A) higher than the total noise level before cavitation inception within almost entire operating regimes [21,22,25]....
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...3b shows that differences between the noise levels of the discrete frequency (147 Hz) before cavitation inception (the minimum value) and after it was fully developed (the maximum value denoted by black dots) are between 12 and 20 dB for different flow rates [25]....
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TL;DR: In this article, the cavitation behavior in the pump mode of a pump-turbine is experimentally and numerically investigated and the best inception cavitation range occurs around the impeller design condition.
59 citations
References
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16 Nov 2012
TL;DR: In this article, the authors present a bibliographie (a la fin de chaque chapitre), and index reference record created on 2004-09-07, modified on 2016-08-08
Abstract: Note: + bibliographie (a la fin de chaque chapitre), + index Reference Record created on 2004-09-07, modified on 2016-08-08
2,580 citations
281 citations
01 Dec 2000
TL;DR: Li et al. as mentioned in this paper investigated the role of machine transients in the formation of single and multi-bubbles in Hydraulic Machinery, and found that the most frequent types of machine-transients are pump and pump transients.
Abstract: Introduction (S C Li) Cavitation and Cavitation Types (A J Acosta) Bubble Dynamics: Single Bubble (A Shima) Bubble Dynamics: Multi-Bubbles (Stochastic Behaviour) (S C Li) Cavitating Flow (H Mural & E Outa) Cavitation Phenomena in Hydraulic Machinery (H Tanaka, R K Turton et al.) Cavitation Damage to Hydraulic Machinery (Y Iwai et al.) Cavitation Caused Vibrations (J Sato, P Henry et al.) Unsteady Cavitation Flows Caused by Machine Transients: Turbine Transients (C S Martin) Unsteady Cavitation Flows Caused by Machine Transients: Pump Transients (H Tsukamoto).
115 citations
80 citations