摘要
讨论了在水平阴燃稳定传播情况下,随风速的增加向有焰火发生转化的内在机理,并得到了其转化的临界条件.影响阴燃向有焰火发生转化的因素是多样的.随着阴燃展开程度的不同,所得到的临界风速的数值也发生变化,但数量级都在 10-2 m/s.但燃烧结构发生变化时,在自然对流情况下,也会导致阴燃向有焰火发生转化.建立的模型很好地解释了这些现象,所得到的结果与有关实验及文献的结果相一致.
The mechanism of transition from smoldering to flame was discussed with the increase of air flow, and the critical condition was given. The length of the smoldering reaction region had a finite effect on the critical velocity of the air flow, which took order of 10-2 m/s. But when the construction of the placement of the fuel changed, the critical velocity change. In some cases, even in natural convection, smoldering also transferred to flaming combustion. The results are well consistent to those of experiments and literatures concerned.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2005年第1期41-46,共6页
Journal of Combustion Science and Technology
基金
国家重点基础研究专项经费资助项目(2001CB409600)
国家自然科学基金资助项目(59976039).
关键词
阴燃
有焰火
临界条件
转化
Chemical reactions
Combustion
Mathematical models
Natural convection
