Near-limit oscillations of spherical diffusion flames

S. Cheatham, M. Matalon

Research output: Contribution to conferencePaperpeer-review


We examine the dynamic characteristics of a droplet of liquid fuel burning in a reduced oxidant environment. The study is motivated by the experimental observations of candle flames in microgravity, which bear some similarity to the spherical diffusion flame that surrounds a burning liquid fuel droplet. The microgravity experiments reveal that when the oxidant concentration in the chamber is sufficiently low, oscillations develop prior to extinction. A similar phenomena is predicted here. An oscillatory state results for a sufficiently low oxidant concentration when radiative losses from the flame are appreciable. The frequencies of oscillations we predict are in good agreement with the experimental observations.

Original languageEnglish (US)
StatePublished - 1996
Externally publishedYes
Event34th Aerospace Sciences Meeting and Exhibit, 1996 - Reno, United States
Duration: Jan 15 1996Jan 18 1996


Other34th Aerospace Sciences Meeting and Exhibit, 1996
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering


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