Abstract To study the difference in pressure pulsation characteristics between full tubular and axial-flow pumps, CFD (Computational Fluid Dynamics) was used to perform unsteady simulation calculation on full tubular and axial-flow pumps based on the RNG k-e turbulence model. The accuracy and reliability of the CFD results were verified by the model test. Results show that the regulars of the inlet pressure pulsation characteristics between the tubular flow pump and the axial flow pump are different. The blade passing frequency is the main frequency of the pressure pulsation in the impeller inlet of the full tubular pump. The pressure pulsation amplitude is great when the monitor points are near the impeller. The pressure fluctuation at the impeller inlet of the full tubular pump is greater than that of the axial-flow pump due to the influence of clearance backflow under the small flow condition, while the pressure pulsation of the full tubular pump is less than that of the axial-flow pump under design and large flow conditions. The main frequency amplitude of the full tubular pump gradually decreases with the increase of the flow rate.

中文翻译：

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全管泵压力脉动特性的数值研究与试验

摘要 为研究全管式和轴流泵压力脉动特性的差异，基于RNG ke湍流模型，利用CFD（Computational Fluid Dynamics）对全管式和轴流泵进行非定常模拟计算。通过模型试验验证了CFD结果的准确性和可靠性。结果表明，管流泵与轴流泵入口压力脉动特性的规律不同。叶片通过频率是全管泵叶轮进口压力脉动的主要频率。当监测点靠近叶轮时，压力脉动幅度较大。全管泵叶轮进口处的压力脉动在小流量条件下受间隙回流的影响大于轴流泵，而全管泵的压力脉动小于轴流泵。设计和大流量条件下的轴流泵。全管式泵的主频幅值随着流量的增加而逐渐减小。