Numerical Simulation of Internal Flow in Stamping and Welding Multistage Centrifugal Pump

Liu, Yuan Yi; Li, Rui Guang; Sun, Kai

doi:10.4028/www.scientific.net/amr.291-294.2608

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Commonly used analysis methods include the cavitation number, NPSH (Net Positive Suction Head), probability of cavitation occurrence, etc. Experimental research collects data on the cavitation behavior of centrifugal pumps under different operating conditions, such as the cavitation starting point, cavitation rate, performance curves, etc., through actual laboratory or field tests [24]. Numerical calculation (CFD, Computational Fluid Dynamics) is an engineering research method based on the computer, using computer technology and showing the combination of flow, heat transfer, multiphase flow, combustion, and other phenomena in engineering, to solve a variety of complex problems in fluid dynamics, so that to a certain extent they can be predicted on the model.…”

Section: Numerical Simulation Of Cavitation Flowmentioning

confidence: 99%

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Zhu,

Zhou,

et al. 2023

Water

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Cavitation is a detrimental phenomenon in hydraulic machinery, adversely impacting its performance, inducing vibration and noise, and leading to corrosion damage of overflow components. Centrifugal pump internal cavitation will lead to severe vibration and noise, and not only will the performance of hydraulic machinery be adversely affected but the impact generated by the collapse of the vacuole will also cause damage to the impeller wall structure, seriously affecting the safety of the equipment’s operation. To prevent the generation and development of internal cavitation in centrifugal pumps, to prevent the hydraulic machinery from being in a state of cavitation for a long time, to avoid the failure of the unit, and to realize the predictive maintenance of centrifugal pumps, therefore, it is of great significance to research the methods for monitoring the cavitation of hydraulic machinery and the methods for suppressing the cavitation. This paper comprehensively describes the centrifugal pump cavitation mechanism and associated hazards. It also discusses the current state of centrifugal pump cavitation monitoring methods, including commonly used approaches such as the flow-head method, high-speed photography, pressure pulsation method, acoustic emission method, and vibration method. A comparative analysis of these methods is presented. Additionally, the paper explores signal characterization methods for centrifugal pump cavitation, including time-domain feature extraction, frequency-domain feature extraction, and time–frequency-domain feature extraction. The current research status is elaborated upon. Moreover, the paper presents methods to mitigate cavitation and prevent its occurrence. Finally, it summarizes the ongoing research on identifying and determining the cavitation state in centrifugal pumps and offers insights into future research directions.

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Section: Numerical Simulation Of Cavitation Flowmentioning

confidence: 99%

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Zhu,

Zhou,

et al. 2023

Water

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show abstract

“…The realizable k-İ turbulence model is preferred to take into account the turbulence behavior in the pump. For three-dimensional incompressible, unsteady flow, the continuity and momentum equations are written as follows [16][17][18]:…”

Section: Creating Mesh Structure and Numerical Analysismentioning

confidence: 99%

Numerical identification of blade exit angle effect on the performance for a multistage centrifugal pump impeller

Babayigit

Kocaaslan

Aksoy

et al. 2015

EPJ Web of Conferences

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Abstract. Nowadays, single and multistage centrifugal pumps are widely used in industrial and mining enterprises. One of the most important components of a centrifugal pump is the impeller. The performance characteristics are related to the pump comprising the head and the overall efficiency rely a great deal on the impeller geometry. In this work, effects of blade exit angle change on hydraulic efficiency of a multi stage pump impeller are investigated via Ansys-Fluent computational fluid dynamics software for constant width impeller entrance and exit gates, blade numbers and blade thickness. Firstly, the flow volume of a centrifugal pump impeller is generated and then mesh structure is formed for the full impeller flow volume. Secondly, rotational periodic flow model are adopted in order to examine the effect of periodic flow assumption on the performance predictions. Corresponding to the available experimental data, inlet mass flow rate, outlet static pressure and rotation of impeller are taken as 0.02m

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The effect of balance holes to centrifugal pump performance

Babayigit¹,

Özgören²,

Aksoy³

et al. 2017

AIP Conference Proceedings

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Numerical Simulation of Internal Flow in Stamping and Welding Multistage Centrifugal Pump

Cited by 3 publications

References 2 publications

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Numerical identification of blade exit angle effect on the performance for a multistage centrifugal pump impeller

The effect of balance holes to centrifugal pump performance

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