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Research on Smoldering Model and Transition from the Smoldering to Flaming Combustion in Semi-Closed Space
Author(s): LIN Long-yuan, ZHOU Jian-jun, LU Chang, ZHANG Lin-he
Pages: 86-
90
Year: 2008
Issue:
1
Journal: JOURNAL OF COMBUSTION SCIENCE AND TECHNOLOGY
Keyword: 阴燃模型; 聚氨酯泡沫; 半封闭空间; 明火;
Abstract: 为了了解在半封闭空间中阴燃的机制,对水平放置在实验体中的聚氨酯泡沫进行了阴燃实验研究.结果表明,在半封闭空间中,阴燃反应区域温度低且变化幅度小.根据在此条件下阴燃的特点,建立了阴燃区域的模型.分析表明,该模型在未反应区(未燃材料区)中符合得很好,在碳层区中除了接近材料末端处的温度外,其余各处误差不大.从阴燃转明火的实验研究中发现,在半封闭空间中的阴燃很难形成明火,能否向明火转化主要由泡沫中氧气含量控制.
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