Paper Title:
Circulation Distribution of High Specific Speed Mixed-Flow Pump
  Abstract

The load distribution of the impeller and the shape of blade bone surface as well as the pump performance are determined by the circulation distribution from the impeller inlet to the outlet. However, perfect conclusions about optimal forms of the circulation distribution have not been seen yet. In this paper, three kinds of circulation distributions were studied. Three mixed flow pump impellers with high specific speed were designed according to the circulation distributions, and the models of the three pumps were built and modeled in the commercial CFD code ANSYS-CFX 11.0. The flow field in the pumps has been investigated using large eddy simulation (LES). Experiment was carried out on one model. And the performance curves predicted by LES were compared with the experimental data, and good agreements were achieved. The results show that: there is a low pressure area at impeller outlet. The pressure distribution along the circumferential direction was asymmetry at the front-end area of guide vanes, but it becomes uniform at the end of guide vane. The bearing pressure on the pressure side of the model 2 is lower, and the pressure distribution of model 1 is more asymmetry and there is a clear low pressure area at outlet of blade; Cavitation performance of model 2 is better, and the maximum efficiency is also the highest, but the hump is more serious; Model 1 has a widest area of high effective area.

  Info
Periodical
Edited by
Han Zhao
Pages
1982-1985
DOI
10.4028/www.scientific.net/AMM.130-134.1982
Citation
C. L. Wang, C. J. Li, J. Ding, D. Liu, "Circulation Distribution of High Specific Speed Mixed-Flow Pump", Applied Mechanics and Materials, Vols. 130-134, pp. 1982-1985, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhen Biao Liu, Li Zhong Xu, Guang Chao Hou, Hong Sheng Hu
Abstract:One new kind of gas distribution plate used for high concentration electrostatic precipitator (herein after briefing ESP) designed in this...
848
Authors: Chang Gao Xia, Meng Zhang, Xiang Gao, Zhen Yu Zhang
Chapter 22: Mechanical and Electronic Engineering Control
Abstract:The mixed distribution model and the maximum entropy model are used to represent service load of the vehicle clutch. The parameters of those...
5244
Authors: Yi Bing Jiang, Xu Nan Gao, Ping Han
Chapter 5: Mechanical Engineering, Measurement, Control and Automatisation
Abstract:It’s very important for the traffic flow theory, the traffic management and control, and the programming and design of roads to master the...
942
Authors: Mohd Azlan Ismail, Al Khalid Othman, Hushairi Zen
Chapter 1: Mechanical Engineering
Abstract:Pump as Turbine (PAT) always has been a favourable solution to generate electricity in rural areas when there is a potential microhydro site....
11
Authors: Zhi Qiang Yang, C.J. Wu
Chapter 1: Engineering Technologies in Designing of Machines and Equipments
Abstract:The aerodynamic noise of a cross flow fan with uneven blade spacing in room air-conditioner was simulated by computational aerodynamic...
251