Near-limit oscillations of spherical diffusion flames

S. Cheatham, M. Matalon

Research output: Contribution to conferencePaperpeer-review

Abstract

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

Other

Other34th Aerospace Sciences Meeting and Exhibit, 1996
CountryUnited States
CityReno
Period1/15/961/18/96

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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