Journal ArticleDOI
Identification of Critical Net Positive Suction Head From Noise and Vibration in a Radial Flow Pump for Different Leading Edge Profiles of the Vane
S. Christopher,S. Kumaraswamy +1 more
TLDR
In this paper, experimental investigations concerning cavitation in radial flow pump for three different leading edge profiles of the vane were carried out in an open circuit system and the results revealed that the noise and vibration were better predictors of inception and development of cavitation.Abstract:
Experimental investigations concerning cavitation in radial flow pump for three different leading edge profiles of the vane were carried out in an open circuit system. The operating condition of the radial flow pump under cavitating case was understood by measurement of noise and vibration along with the pump parameters for various speeds and flow rates. The outcome of the experimental results revealed that the noise and vibration were better predictors of inception and development of cavitation. Further observation inferred from critical net positive suction head (NPSH) curve of 3% head drop and critical NPSH value of noise and vibration are presented.read more
Citations
More filters
Journal ArticleDOI
Effect of Trailing-Edge Modification of a Mixed-Flow Pump
TL;DR: In this article, the effects of TE modification on the performance and internal flow of a mixed-flow pump are investigated through computational fluid dynamics (CFD) analysis, and the results show that TE modification significantly improves pump efficiency in the high flow rate region by more than 10%.
Journal ArticleDOI
An experimental study on the cavitation vibration characteristics of a centrifugal pump at normal flow rate
TL;DR: An ameliorative algorithm-united algorithm for cavitation vibration analysis is proposed on the basis of short time Fourier transform (STFT) and Wigner-Ville distribution (WVD) as discussed by the authors.
Journal ArticleDOI
Vibration Characteristics Induced by Cavitation in a Centrifugal Pump with Slope Volute
TL;DR: In this article, the influence of cavitation process on different frequency bands in a centrifugal pump with slope volute was analyzed and it was proved that cavitation has a significant impact on low frequency signals.
Journal ArticleDOI
Pump as turbine cavitation performance for both conventional and reverse operating modes: A review
TL;DR: In this article , a thorough review of hydraulic pump as turbine cavitation dynamics and influencing parameters is presented, as well as the future research directions for hydraulic pump-as-turbine cavitation.
Journal ArticleDOI
Numerical and experimental investigation on the development of cavitation in a centrifugal pump
TL;DR: The research reveals the occurrence and development of cavitation in the centrifugal pump which has been confirmed through experiments and numerical simulation, and the typical frequency of pump inlet pressure pulsation could be regarded as around 30 Hz in the severe cavitation conditions.
References
More filters
Book
Cavitation and Bubble Dynamics
TL;DR: In this paper, the fundamental physical processes involved in bubble dynamics and the phenomenon of cavitation are described and explained, and a review of the free streamline methods used to treat separated cavity flows with large attached cavities is provided.
Book
Mechanics of underwater noise
TL;DR: The basic mechanisms by which acoustic noise is generated, transmitted by structures, and radiated into the underwater environment are explained.
Journal ArticleDOI
Centrifugal and axial flow pumps: by A. J. Stepanoff. 428 pages, illustrations, diagrams, 15 × 24 cm. New York, John Wiley & Sons, Inc., 1948. Price, $7.50
Journal ArticleDOI
Observations of the Dynamics and Acoustics of Travelling Bubble Cavitation
TL;DR: In this article, the growth and collapse of cavitation bubbles generated by axisymmetric headforms were investigated using a surface electrode probe and the results were compared with relevant theoretical and emperical predictions.
Journal ArticleDOI
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.