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The influence of air distribution on the single-phase flow field of central fuel rich swirl burner

  • Yong Liu*
  • , Zhengqi Li
  • , Jing Li
  • , Zhiyong Hu
  • , Zhichao Chen
  • , Yan Zhang
  • , Shanping Shen
  • *Corresponding author for this work
  • School of Energy Science and Engineering, Harbin Institute of Technology

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

Abstract

This paper presents a systematic study of the cold flow characteristics of a central fuel rich swirl burner. Flow fields at the burner outlet corresponding to various primary and inner secondary air ratios were measured. With decreasing primary air ratio and increasing inner secondary air ratio, the swirl intensity of the jet increases, mixing between primary and secondary air is enhanced, and the outward diffusion of the jet increases. Simultaneously the inception point of the recirculation zone moves towards the outlet of the burner. Also the zone's maximum diameter and axial length both increase but are more strongly influenced by a changing primary air ratio rather than changing inner secondary air ratio. This influence is reversed with regard the turbulence intensity, being weaker for changing primary air ratio than changing inner secondary air ratio.

Original languageEnglish
Title of host publication2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011 - Proceedings
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011 - Wuhan, China
Duration: 25 Mar 201128 Mar 2011

Publication series

NameAsia-Pacific Power and Energy Engineering Conference, APPEEC
ISSN (Print)2157-4839
ISSN (Electronic)2157-4847

Conference

Conference2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011
Country/TerritoryChina
CityWuhan
Period25/03/1128/03/11

Keywords

  • Air ratio
  • CFR
  • Flow characteristic
  • Recirculation zone
  • Swirl burner

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