精品文档---下载后可任意编辑侧壁式压水室离心泵内部非定常流动及其振动特性的开题报告摘要本文讨论了侧壁式压水室离心泵内部的非定常流动及其振动特性。通过建立数学模型和 CFD 仿真模拟，探究了非定常流动对泵机性能和振动特性的影响，并对比了不同进口流量条件下泵机的振动特性差异。模拟结果表明，非定常流动会影响泵机的工作性能，同时也会引发泵机的振动，其振动频率与进口流量有关。因此，在设计和改进侧壁式压水室离心泵时，必须充分考虑非定常流动和振动特性，以提高泵机的工作性能和可靠性。关键词：离心泵；侧壁式压水室；非定常流动；振动特性AbstractThis paper investigates the unsteady flow and vibration characteristics inside the side-wall pressure chamber centrifugal pump. By establishing a mathematical model and simulating with CFD, the influence of unsteady flow on the pump performance and vibration characteristics is explored, and the differences in vibration characteristics of the pump under different inlet flow conditions are compared. The simulation results show that unsteady flow will affect the working performance of the pump and also cause vibration of the pump, and the vibration frequency is related to the inlet flow rate. Therefore, in the design and improvement of side-wall pressure chamber centrifugal pumps, the unsteady flow and vibration characteristics must be fully considered to improve the working performance and reliability of the pump.Keywords: Centrifugal pump; Side-wall pressure chamber; Unsteady flow; Vibration characteristics
