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. © 2013 by ASME.

Sivasailam Kumaraswamy

Experimental investigations

Leading edge

NOISE AND VIBRATION

NPSH

Open circuits

Operating condition

PUMP PARAMETERS

RADIAL FLOW PUMPS

cavitation

flow rate

Impellers

Radial flow

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IIT Madras

Identification of Critical Net Positive Suction Head From Noise and Vibration in a Radial Flow Pump for Different Leading Edge Profiles of the Vane

Journal of Fluids Engineering, Transactions of the ASME

An experimental investigation of the cavitation behaviour of a radial flow pump of metric specific speed 23.62 rpm having different leading edge profiles of the vane is presented. The pump was operated for flow rates from 80 to 120% of the best efficiency point. The measurement included noise and vibration signals apart from the hydraulic parameters. The results exhibited the trends of noise and vibration with respect to percentage of head drops for all operating conditions. It was concluded that the trends were totally different for various flow rates. Hence it is suggested that the criteria to be used for detecting the early cavitation in pump based on noise and vibration signals should be a function of the flow rate. Further, it was found that the range of frequency band for noise and vibration was within 5 kHz with reference to the magnitude of fluctuation. The repeatable predominant frequency of vibration for prediction of cavitation behaviour of this particular pump was established as 0.992 kHz. © 2018, The Institution of Engineers (India).

Journal of The Institution of Engineers (India): Series C

Experimental Determination of Cavitation Characteristics of Low Specific Speed Pump using Noise and Vibration

The aim of this paper was to present a method to identify the extent of cavitation in pump using the photographic records of cavitation tests conducted on pumps having three different leading edge profiles of the vane. Based on the extent of cavitation in pump, the impeller with circular leading edge was found to be better in operation, followed by plain and ellipse2 leading edge impellers. The technique adapted here was useful to correlate the extent of cavitation with the head drop in pump. © (2014) Trans Tech Publications, Switzerland.

Applied Mechanics and Materials

Flow visualization study on radial flow pump under cavitating condition

Journal of Fluids Engineering

Experimental Characterization of Thermal Cavitation Effects on Space Rocket Axial Inducers

2011 IEEE International Conference on Mechatronics

Vibration signature analysis for detecting cavitation in centrifugal pumps using neural networks

Experimental Study of a Cavitating Centrifugal Pump During Fast Startups

Applied Acoustics

Detection of cavitation in operation of kinetic pumps. Use of discrete frequency tone in audible spectra

Identification of critical net positive suction head from noise and vibration in a radial flow pump for different leading edge profiles of the vane

Journal	Journal of Fluids Engineering, Transactions of the ASME
ISSN	00982202
Open Access	No