Experimental investigation of spherical-flame acceleration in lean hydrogen-air mixtures

被引:72
|
作者
Bauwens, C. R. L. [1 ,2 ]
Bergthorson, J. M. [2 ]
Dorofeev, S. B. [1 ]
机构
[1] FM Global, Div Res, 1151 Boston Providence Turnpike, Norwood, MA 02062 USA
[2] McGill Univ, Dept Mech Engn, Montreal, PQ H3A 0G4, Canada
关键词
Spherical flame acceleration; Flame instabilities; Gas explosions; Background Oriented Schlieren; SELF-SIMILAR PROPAGATION; INSTABILITIES; PRESSURES;
D O I
10.1016/j.ijhydene.2016.05.028
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Large-scale experiments examining spherical-flame acceleration in lean hydrogen-air mixtures were performed in a 64 m(3) constant-pressure enclosure. Equivalence ratios ranging from 0.33 to 0.57 were examined using detailed front tracking for flame diameters up to 1.2 m through the use of a Background Oriented Schlieren (BOS) technique. From these measurements, the critical radii for onset of instability for these mixtures, on the order of 2-3 cm, were obtained. In addition, the laminar burning velocity and rate of flame acceleration as a function of radius were also measured. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:7691 / 7697
页数:7
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