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
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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
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Centrifugal and rotary pumps / fundamentals with applications
TL;DR: In this paper, the concept of a PUMPING system was introduced and the following characteristics of a pump system were discussed: Liquid Transfer Input Input Power, Losses and Efficiency System Curve Pump Curve CENTRIFUGAL PUMP-FUNDAMENTALS Affinity Laws Helpful Formulas Per Centrifugal Pump Triangles Quiz #1: Velocity triangles Performance Curves Quiz#2: How much money did a maintenance mechanic save his plant? Performance Modifications Q2: A Valve puzzle Underfiling and overfiling Design Modeling Techniques Specific Speed (
Proceedings ArticleDOI
Vibration signature analysis for detecting cavitation in centrifugal pumps using neural networks
TL;DR: In this article, a neural network was used to detect cavitation in a centrifugal pump using a neural net system, and the features extracted from vibration signals were used as inputs to the neural network.
Influence of impeller leading edge profiles on cavitation and suction performance
TL;DR: In this article, the influence of blade leading edge profiles, keeping all other parameters as identical, on the cavitation behavior of an impeller was studied. And the effect of different profiles such as blunt, circular, elliptic, and parabola were considered.