Combustion of liquid fuel sprays in stagnation-point flow

Z. H. Chen, T. H. Lin, S. H. Sohrab

研究成果: Article同行評審

47 引文 斯高帕斯(Scopus)

摘要

The steady combustion of polydispersed sprays of ethanol and kerosene in the stagnation-point flow of lean methane/air mixtures is experimentally investigated. Using laser Doppler velocimetry, the axial and radial velocity profiles of the droplets are measured for water sprays in the presence or absence of lean methane/air flame. These results are then compared with the velocity profiles obtained for small MgO particles under identical flow conditions. The results show the effects of gas expansion on droplet deceleration (acceleration) in the pre-flame (post-flame) regions. Also, it is found that addition of water spray results in the formation of a distributed region of yellow-orange emission downstream of the lean methane flame. In combustion of ethanol spray, certain critical fuel-concentration/velocity limits are identified above which the flame becomes acoustically unstable. The implications of the study to the modeling of turbulent spray combustion are discussed.

原文English
頁(從 - 到)63-77
頁數15
期刊Combustion science and technology
60
發行號1-3
DOIs
出版狀態Published - 1988 七月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)
  • 燃料技術
  • 能源工程與電力技術
  • 物理與天文學 (全部)

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