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

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 ۶۶.۷. 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 D۳ increases, but the pressure pulsation decreases. The total vibration levels of the inlet flange, outlet flange, and pump base decreased by ۸.۳%, ۷.۹%, and ۱۲.۳% respectively. The sound pressure of the flow noise at each characteristic frequency showed a different degree of decreasing trend.

کلیدواژه ها:

Marine centrifugal pump ، Base circle diameter ، Dynamic and static interference ، Vibration and noise characteristics ، Numerical simulation