Open AccessNumerical investigation of the grooves effect on the inlet flow characteristics and hydraulic performance of an axial-flow pump
Author(s) -
Rui Zhang,
Tong Mu,
Hui Xu,
Xiangdong Qian
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/627/1/012002
Subject(s) - impeller , inflow , inlet , axial flow pump , stall (fluid mechanics) , axial piston pump , mechanics , axial compressor , flow (mathematics) , materials science , computer simulation , backflow , computational fluid dynamics , engineering , variable displacement pump , mechanical engineering , physics , gas compressor , reciprocating pump
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.