volume 155, issue 1-2, P37-53 2008
DOI: 10.1016/j.combustflame.2008.03.005
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Fumiaki Takahashi, Gregory T. Linteris, Viswanath R. Katta

Abstract: Microgravity experiments and computations have been conducted to elucidate stabilization and extinguishment mechanisms of methane diffusion flames, in the cup-burner configuration, with CO 2 added gradually to a coflowing air or oxygen-enriched stream. The minimum extinguishing concentration of CO 2 under low oxidizer velocities (<20 cm/s) was measured in microgravity achieved by parabolic flights of the NASA Reduced Gravity Aircraft. Transient computations with full chemistry and a gray-gas radiation model w…

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