NDLI: Experimental and numerical analysis of unsteady pressure pulsation in a centrifugal pump with slope volute

Content Provider	Springer Nature Link
Author	Zhang, Ning Yang, Minguan Gao, Bo Li, Zhong Ni, Dan
Copyright Year	2015
Abstract	This study experimentally and numerically investigates the unsteady flow in a centrifugal pump with special slope volute under various conditions to illustrate the detailed flow structures and pressure pulsation within the model pump. Whole flow passage is considered during the numerical simulation; pressure pulsation signals are extracted using nine fast-response pressure transducers. The Root mean square (RMS) method is introduced to deal with the discrete components at f$_{BPF}$ of the different monitoring points along the volute casing, which is an effective attempt to evaluate the overall pulsating level of the model pump. Results show that numerical method can predict the components at f$_{BPF}$ effectively; however, it has limited ability in capturing noise frequencies motivated by unsteady separate flow and non-linear interaction effect. Around the nominal flow rate, the predicted amplitudes at f$_{BPF}$ agree well with the experimental results, showing larger difference at the off-design conditions. To predict the pulsating level of the components at f$_{BPF}$, two fitted equations of the RMS values versus the flow rate and specific speed are carried out, which would be very helpful in evaluating the pressure pulsation level in the centrifugal pump.
Starting Page	4231
Ending Page	4238
Page Count	8
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	29
Issue Number	10
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2015-10-15
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Centrifugal pump Slope volute Pressure pulsation Numerical simulation Experimental investigation Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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