In-situ observation of the soot deposition process on a solid wall with a diffusion flame along the wall

Jae Hyuk Choi*, Osamu Fujita, Takahumi Tsuiki, Junhong Kim, Suk Ho Chung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Experiments at the Japan Microgravity Center (JAMIC) have investigated the interaction between diffusion flames and solid surfaces placed near flames. The fuel for the flames was C2H4 and the surrounding oxygen concentration 35%, with surrounding air temperatures of Ta = 300 and 600 K. The effects of these parameters on soot distribution in diffusion flames and soot deposition on solid walls were studied. Direct images of the whole flame and shadow images of the flame with back light were recorded and used to calculate the soot volume fraction by the Abel transformation method. Results show that at the higher surrounding air temperature the soot particle distribution region is closer to the wall and results in more deposition. Numerical simulation was also performed to determine the motion of soot particles in the flames and the soot deposition characteristics. The results are in good agreement with the observed soot behavior in microgravity.

Original languageEnglish (US)
Pages (from-to)167-175
Number of pages9
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number1
StatePublished - Aug 15 2006
Externally publishedYes


  • Boiler
  • Deposition
  • Diffusion combustion
  • Flame
  • Microgravity
  • Soot
  • Soot line
  • Volume fraction

ASJC Scopus subject areas

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


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