蜗壳式多级泵压力脉动特性研究

为了研究压力脉动在蜗壳式多级离心泵不同位置的变化规律,利用Fluent软件,采用SSTk-ω湍流模型对蜗壳式多级离心泵的内部流场进行多工况的非定常数值模拟,得到其各监测点的压力脉动特性,并对其进行对比分析。结果表明:在蜗壳式多级离心泵首级蜗壳内,压力脉动主要受叶轮与隔舌之间的动静干涉的影响,同时与之相连的过渡流道内的液流流动状态的影响也是不可忽略的。

Study on Volute Multi-stage Pump Pressure Fluctuation Character

For studying change rule of pressure fluctuation at different position of volute multi-stage pump,inner flow field of volute multi-stage pump is simulated and analyzed under multi working condi-tions and non-constant constant value using Fluent software and SSTk-ω turbulence model.The result shows that pressure fluctuation is affected by moving and still interference between impeller and separating tongue in first volute of volute multi-stage centrifugal pump,meanwhile,corresponded liquid status which is in transition passage connected to it cannot be neglectful.