Author(s): Rui Zhang; Tong Mu; Hui Xu; Xiangdong Qian

Linked Author(s):

Keywords: Axial-flow pump; Grooves; Inlet flow; Hydraulic performance; Numerical simulation

Abstract: In this paper, the axial position of the grooves effect on the inlet flow characteristics and hydraulic performance of an axial-flow pump is studied by numerical method. The computational results show that setting the grooves on the pump inlet pipe could significantly improve the inflow characteristics of impeller and the saddle zone would be effectively suppressed. Under the deep stall condition, the grooves could improve the axial velocity of inflow and effectively reducing its streamline bending degree, and it also can block and destroy the vortex structures and then dissipate them rapidly. Reducing the axial distance between grooves and impeller can improve the hydraulic performance and the inflow characteristics of axial-flow pump.

DOI: https://doi.org/10.1088/1755-1315/627/1/012002

Year: 2019