On Flame Generated Self-Similar Blast Waves (Paper No. 6)
CALIFORNIA UNIV BERKELEY COLL OF ENGINEERING
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The problem treated is that of the evaluation of pressure waves that can be generated by clouds of explosive gas-air mixtures in a free atmosphere which is initially at a uniform state. The particular subject of the study is concerned with the final stage of the process when, following ignition and initial flame acceleration, the flame acquires the steady state of a constant velocity deflagration. Under the assumption of point, line or plane symmetrical geometry, the flow field is then self-similar. Theoretical results describing such flow fields are presented and numerical solutions, obtained for a representative case corresponding to a hydrocarbon-air mixture at normal atmospheric conditions, are given.