Numerical simulation and model test of the influence of guide vane angle on the performance of axial flow pump

This paper uses CFD (Computational Fluid Dynamics) numerically to simulate and calculate the axial flow pumps under different guide vane rotation angle and inlet angles and to conduct a comparative analysis of the inflow field. The results show that the influence of different guide vane rotation angles and inlet angles on the performance of the axial flow pump reflects in the operating conditions of large-discharge conditions. Adjusting the different guide vane rotation angles can significantly improve the efficiency of axial flow pumps. Moreover, the high-efficiency area of pump operation conditions is expanded nearly two times with the increase of the guide vane rotation angles under large-discharge conditions. At the same time, Under the design operating conditions, when the guide vane rotation angle is -2{degree sign}, the highest efficiency of the axial flow pump is 87.69%. However, under the linear change of the inlet angle of the guide vane, the highest efficiency of the axial flow pump can reach 87.71%. Finally, the model test verifies the reliability of the numerical simulation, and the research results are beneficial for improving the efficiency of the axial flow pump.