Macroscopic flame structure in a premixed-spray burner (formation and disappearance processes of droplet clusters and two-stage flame structure)

Shohji Tsushima, Hiroyasu Saitoh, Fumiteru Akamatsu, Masashi Katsuki

Research output: Contribution to journalArticle

2 Citations (Scopus)


In an attempt to elucidate formation and disappearance processes of droplet clusters in spray flames, simultaneous measurements consisting of laser tomography and flame chemiluminescence detection are applied to a premixed-spay burner. The smart combination of measurements provides time-series data-set serving for better understanding of spray flames, which essentially contains inhomogeneity in space and time. It is revealed that preferential flame propagation through a premixed-spray stream plays a significant role in creating droplet clusters and that droplet clusters formed in this manner evanesces from their outer boundaries. Those observation confirms that the premixed-spray flame comprises both premixed-mode flame in upstream region and diffusion-mode flame in downstream region, respectively, i.e., two-stage flame structure previously reported for spray flames stabilized in either counter or stagnation flows.

Original languageEnglish
Pages (from-to)616-623
Number of pages8
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number4
Publication statusPublished - 2001 Nov 1



  • Combustion
  • Droplet cluster
  • Flame propagation
  • Group combustion
  • Laser
  • Laser tomography
  • Light emission
  • Liquid fuel
  • Spray flame

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

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