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Marginally Flammable Materials: Burning Velocity of Trans-Dichloroethylene.


pdf icon Marginally Flammable Materials: Burning Velocity of Trans-Dichloroethylene. (73 K)
Linteris, G. T.; Babushok, V. I.

Scale Modeling 3rd International Symposium. Proceedings. ISSM3-C8. September 10-13, 2000, Nagoya, Japan, 1-8 pp, 2000.

Keywords:

flammable materials; burning velocity; hydrocarbons; chlorinated hydrocarbons; dichloroethylene; flame speed

Abstract:

The overpressure dynamics and explosion hazard of commodity materials under full-scale conditions are often assessed through laboratory measurements of their laminar burning velocity. We present the first measurements of the flame speed of trans-1,2-dicholorethylene (TDCE). Data are presented for a fuel stream consisting of TDCE/methane blends (in which the TDCE mole fraction is up to 0.9) for combustion with air at a fuel-air equivalence ratio {phi} of 1.0, 1.1 and 1.2. Data are also presented for stoichiometric flames of pure TDCE with the oxidizer stream having a range of oxygen mole fraction from 0.27 to 0.365, and at two values of the oxidizer oxygen mole fraction (0.32 and 0.365) over a range of equivalence ratio (0.65 <= {phi} <= 1.2). Extrapolations of the results with TDCE/methane blends and with higher oxygen mole fraction to the conditions of flames of pure TDCE with air at {phi}=1.0 indicate a laminar burning velocity of (10.7+1.2) cm/s. In general, the results indicate that the TDCE burning velocity is about one fourth that of methane. For TDCE, the maximum burning velocity occurs for slightly fuel lean conditions. Numerical modeling of the burning velocity yields values about a factor of two lower than the experiments, suggesting that improvements in the kinetic description are required.