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A simple illustration of turbulent flame ball growth

被引：10
作者：
Ashurst, WT
机构：
[1] Combustion Research Facility, Sandia National Laboratories, Livermore, CA
来源：
COMBUSTION SCIENCE AND TECHNOLOGY | 1995年 / 104卷 / 1-3期
基金：
美国能源部;
关键词：
D O I：
10.1080/00102209508907708
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A flame ball growing into a turbulent mixture exhibits a speed which is proportional to its size-this effect is a consequence of the distorted flame surface: the inner flame regions ''push'' the outer regions, the magnitude of this velocity depends upon the flame surface density distribution. A simple two-dimensional, zero-thickness flame model interacting with defined eddies illustrates how rapidly this flame distortion occurs after a spark ignition. This distributed volume source effect is also the functional form of Groffs modified entrainment model of flame propagation. A result of this size dependent growth is exponential growth of flame area which is an essential feature of spark-ignition internal combustion engines.
引用
收藏
页码：19 / 32
页数：14
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