Improving the Performance of an Axial Flow Pump: An Overview

M. P. Moifatswane, N. Madushele, N. Ahmed

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thus far, axial flow pumps remain a significant hydrodynamic unit. These pumps have common applications for various systems that require a high flow rate and a lower head. They tend to be less efficient and consume excessive power when operating at low flow conditions. Most of the studies focus on improving the hydraulic performance of these pumps based on the best efficiency point (BEP) flow conditions. This approach is mostly based on the assumption that the pump will always operate at BEP. However, this is not always the case, because the operational condition of the pump may require an adjustment to meet certain system demands. Hence, it is necessary to emphasize the need to improve the hydraulic performance of these pumps for multiple flow conditions. This means that in addition to BEP, the lowest, and the highest operational conditions need to be considered when improving the pump performance. Also, it is important to review the phenomenon of cavitation in every design optimization investigation, given its significance to pump performance and some misrepresentation which are sometimes associated with its assessment. Therefore. the main contribution of this article is to briefly discuss the successful and unsuccessful design optimization methods of an axial flow pump. Furthermore, it highlights the significance of improving the pump performance at multiple flow conditions and also to incorporate the analysis of using CFD methods to analyze the results of cavitation performance in every pump performance improvement investigation. .

Original languageEnglish
Title of host publicationSelected peer-reviewed full text papers from the Internation Conference on Addressing Societal Challenges through Innovation Engineering Research, ICASCIE 2020
EditorsFeyisayo Victoria Adams, Abel Ajibesin, Temidayo Oluwagbenga Johnson, Ojo Sunday Issac Fayomi
PublisherTrans Tech Publications Ltd
Pages15-25
Number of pages11
ISBN (Print)9783035717969
DOIs
Publication statusPublished - 2021
EventInternational Conference on Addressing Societal Challenges through Innovation Engineering Research, ICASCIE 2020 - Virtual, Online
Duration: 9 Nov 202011 Nov 2020

Publication series

NameAdvances in Science and Technology
Volume107 AST
ISSN (Print)1662-8969
ISSN (Electronic)1662-0356

Conference

ConferenceInternational Conference on Addressing Societal Challenges through Innovation Engineering Research, ICASCIE 2020
CityVirtual, Online
Period9/11/2011/11/20

Keywords

  • CFD methods
  • Cavitation
  • Hydraulic performance
  • Hydrodynamic unit
  • Impeller
  • best efficiency point (BEP)
  • net positive suction head required (NPSHr)

ASJC Scopus subject areas

  • Energy (miscellaneous)
  • Engineering (miscellaneous)
  • Environmental Science (miscellaneous)

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