A novel centrifugal pump with axial directional inlet and outlet flow was presented. The system fluid was employed as the lubricant for the hydrodynamic bearings by which the pump can operate at the maximum speed of 8100 r/min without oil lubrication or rigid support. The performance curves related to the efficiency, head, and volume flow rate were obtained via a water cycle test rig. The efficiency at best efficiency point reached 36.14% with a volume flow rate of 4.13 m³/h and a head of 27.34 m at 7800 r/min. The maximum head reached 37.28 m, with a volume flow rate of 0.568 m³/h at 7800 r/min. The maximum volume flow rate of 6.05 m³/h was obtained with a head of 19.45 m at 8100 r/min. Then, the three-dimension computational fluid dynamics model with Reynolds-averaged Navier–Stokes equations and shear stress transport k-ω turbulence model for the pump and bearings was set up individually. The numerical results agreed well with the experimental data.

提出了一种新型的轴向进出水离心泵。系统流体被用作流体动力轴承的润滑剂，通过该流体，泵可以在没有油润滑或刚性支撑的情况下以8100 r / min的最大速度运行。通过水循环试验台获得与效率，扬程和体积流量有关的性能曲线。最佳效率点的效率达到36.14％，体积流量为4.13 m ³ / h，在7800 r / min时扬程为27.34 m。最大扬程达到37.28 m，在7800 r / min时的体积流量为0.568 m ³ / h。最大体积流量为6.05 m ³/ h是在18100 r / min下以19.45 m的扬程获得的。然后，分别建立了具有雷诺平均Navier-Stokes方程和剪切应力传递k - ω湍流模型的三维计算流体动力学模型。数值结果与实验数据吻合良好。