Open AccessStudy on the Design Method of Impeller on Low Specific Speed Centrifugal Pump
Author(s) -
Jianhua Liu,
Xiangyang Zhao,
Xiao Miaoxin
Publication year - 2015
Publication title -
the open mechanical engineering journal
Language(s) - English
Resource type - Journals
ISSN - 1874-155X
DOI - 10.2174/1874155x01509010594
Subject(s) - impeller , centrifugal pump , reynolds averaged navier–stokes equations , slip factor , specific speed , rotodynamic pump , turbulence , fluent , suction , mechanical engineering , computational fluid dynamics , engineering , axial flow pump , flow (mathematics) , mechanics , computer science , hydraulic pump , physics , radial piston pump , progressive cavity pump , reciprocating pump
In this work, the comparative study has been done for five kinds of design methods of the low specific speedcentrifugal pump impeller adopted numerical simulation method by software of Fluent, so that the problems can besolved. Many different design methods exists for the low specific speed centrifugal pump impeller, which caused thedesign effect difficult to control. The numerical simulation method based on the Reynolds time averaged N-S equations(RANS) and RNG κ-ε turbulence models. Results revealed the inner flow pattern of these impeller, and these results wereverified by external characteristic experiment. The research results showed that the design method, which adoptedcompound impeller with short blades and these short blades turned to the suction surface of long blades. Results provedthat its flow distribution is even and external characteristic curve is more ideal.