Influence du jeu radial, des ailettes et de la hauteur du capot sur la fuite d'extrémité dans les ventilateurs à écoulement axial

Translated title of the contribution: Effect of tip clearance, winglets, and shroud height on the tip leakage in axial flow fans

Jae Hyuk Jung, Won Gu Joo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study is concerned with the improvement in efficiency of axial flow fans that are being used in numerous fields including outdoor units of air conditioners. The tip leakage flow occurring between a blade tip and shroud is one of the major losses in the axial flow fan. A well-known method used to control such tip leakage flow is locating winglet on the suction side of blade tips. Only a few articles have studied the impact of tip clearance on the flow structure of tip leakage flow of axial flow fans with winglet. In this study, the flow structure occurring on the blade tip due to the location of a winglet was analyzed. We confirm the existence of an optimal tip clearance which results in the maximum efficiency for an axial flow fan with a shroud height measuring 30% of the axial chord length.

Original languageFrench
Pages (from-to)195-204
Number of pages10
JournalInternational Journal of Refrigeration
Volume93
DOIs
Publication statusPublished - 2018 Sep 1

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Axial flow
Fans
Flow structure
Leakage (fluid)
Air

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

Cite this

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abstract = "This study is concerned with the improvement in efficiency of axial flow fans that are being used in numerous fields including outdoor units of air conditioners. The tip leakage flow occurring between a blade tip and shroud is one of the major losses in the axial flow fan. A well-known method used to control such tip leakage flow is locating winglet on the suction side of blade tips. Only a few articles have studied the impact of tip clearance on the flow structure of tip leakage flow of axial flow fans with winglet. In this study, the flow structure occurring on the blade tip due to the location of a winglet was analyzed. We confirm the existence of an optimal tip clearance which results in the maximum efficiency for an axial flow fan with a shroud height measuring 30{\%} of the axial chord length.",
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