Influence of Dynamic and Static Interference on the Internal Flow and Vibration and Noise Characteristics of Marine Centrifugal Pump

Cheng, Z.; Ma, Q.; Liu, H.; Dong, L.; Pan, Q.

doi:10.47176/jafm.16.10.1860

Influence of Dynamic and Static Interference on the Internal Flow and Vibration and Noise Characteristics of Marine Centrifugal Pump

Document Type : Regular Article

Authors

¹ National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China

² School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju 52828, Republic of Korea

³ School of Mechanical and Electrical Engineering, Chuzhou University, Chuzhou 239000, China

10.47176/jafm.16.10.1860

Abstract

To improve the overall performance of marine centrifugal pumps (MCPs), their vibration and noise performances were optimized using the hydraulic design of the volute casing parameters considering a constant hydraulic performance at a specific speed of 66.7. Numerical simulations of the full flow field, vibration, and noise were conducted for each of five volute base circle diameters. The impact of dynamic and static disturbances on the flow and vibration and noise characteristics were investigated. These results provide some theoretical and technical support for the design and application of MCPs. The flow pattern inside the volute becomes more uniform as the D₃ increases, but the pressure pulsation decreases. The total vibration levels of the inlet flange, outlet flange, and pump base decreased by 8.3%, 7.9%, and 12.3% respectively. The sound pressure of the flow noise at each characteristic frequency showed a different degree of decreasing trend.

Keywords

Main Subjects

Pumps and hydraulic turbines

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