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

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

Research output: Contribution to journalArticle

Abstract

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, and a nitrogen-oxygen ambient with a relatively low oxygen concentration was employed to facilitate observaton 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, it is shown that the interaction effects are principally observed during the initial heating period. For fuel mixtures, interaction effects are estimated by comparing transition time of single droplet and that of two droplets.

Original languageEnglish
Pages (from-to)2888-2894
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume65
Issue number636
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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