Effects of the initial heat-up period on a two-droplet array burning at high pressure in microgravity

Keiichi Okai, Yutaka Ono, Osamu Moriue, Hideaki Kato, Mitsuhiro Tsue, Michikata Kono, Jun'Ichi Sato, Daniel L. Dietrich, Forman A. Wiliams

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The interactive combustion of two closely-spaced droplets at elevated pressures was investigated experimentally in a 2.2 second drop tower. Heptane, hexadecane and mixtures of the two were the fuel. A nitrogen-oxygen ambient with a relatively low oxygen concentration facilitated observation of droplets during combustion at elevated pressures. Results show that staged combustion of binary fuel droplets still exists for interacting droplets at elevated pressures. For pure fuels, the interaction effects are principally observed during the initial heating period. For fuel mixtures, interaction effects are estimated by comparing the transition time of a single droplet to that of the droplet pair.

Original languageEnglish
Pages (from-to)485-490
Number of pages6
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number3
Publication statusPublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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