Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Flame spread over thin solid fuels in partially premixed atmospheres
Experiments on flame spread rates (Sf) over thin solid fuels in oxidizing atmosphere to which gaseous fuel is added reveal a large increase in Sf for some gaseous fuels. The most to least effective fuels tested are, in order, H2, CO, hydrocarbons, and NH3. It is inferred that, unlike nonpremixed flame spread, the finite-rate kinetics of the gaseous fuel have a dominant influence on Sf even far from extinction conditions. A simple model developed for the effect of the gaseous fuel on Sf, while retaining the framework of the deRis model of Sf for infinite-rate kinetics of the solid fuel vapors, shows good qualitative and fair quantitative agreement with experimental data. For some fuels, like CO, the gaseous products of partial combustion produce a more combustible environment than the fresh atmosphere. The practical implications for modeling fires in enclosures are discussed.
Flame spread over thin solid fuels in partially premixed atmospheres
Experiments on flame spread rates (Sf) over thin solid fuels in oxidizing atmosphere to which gaseous fuel is added reveal a large increase in Sf for some gaseous fuels. The most to least effective fuels tested are, in order, H2, CO, hydrocarbons, and NH3. It is inferred that, unlike nonpremixed flame spread, the finite-rate kinetics of the gaseous fuel have a dominant influence on Sf even far from extinction conditions. A simple model developed for the effect of the gaseous fuel on Sf, while retaining the framework of the deRis model of Sf for infinite-rate kinetics of the solid fuel vapors, shows good qualitative and fair quantitative agreement with experimental data. For some fuels, like CO, the gaseous products of partial combustion produce a more combustible environment than the fresh atmosphere. The practical implications for modeling fires in enclosures are discussed.
Flame spread over thin solid fuels in partially premixed atmospheres
Flammenausbreitung über dünnen festen Brennstoffen in teilweise vorgemischten Atmosphären
Ronney, P.D. (Autor:in) / Greenberg, J.B. (Autor:in) / Zhang, Y. (Autor:in) / Roegner, E.V. (Autor:in)
1995
11 Seiten, 7 Bilder, 1 Tabelle, 26 Quellen
Aufsatz (Konferenz)
Englisch
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