Interpretation on fire interaction mechanisms of multiple pool fires
Interpretation on fire interaction mechanisms of multiple pool fires
复制标题
多池火灾火灾相互作用机制解读
DOI：
10.1016/j.proci.2018.06.049
复制
发表时间：
2019
影响因子：
3.4
通讯作者：
Tu Ran
中科院分区：
文献类型：
--
作者：
Jiao Yan;Gao Wei;Liu Naian;Lei Jiao;Xie Xiaodong;Zhang Linhe;Tu Ran
本研究旨在解释多池火灾（MPF）的火灾相互作用机制。在燃油盘直径分别为0.2 m、0.15 m、0.05 m和不同/D（S：火间距）的情况下，进行了一系列正庚烷和乙醇的MPF试验。结果表明，中心火的空气夹带和对流以及外火的倾斜取决于中心火和外火燃烧速度的差异。此外，还指出了火灾归并准则与燃料类型有关。对于本研究中使用的典型燃料，由于其更高的燃烧速率和火焰高度，正庚烷的临界值/比乙醇强。结果还表明，在无夹带空气约束的强燃条件下，中心火源的质量燃烧通量和热反馈随燃烧强度/D的减小而单调增加。然而，如果空气夹带受到限制，热反馈率和分数非单调依赖于on /D。此外，发现并说明了由于空气夹带限制而导致的强积金通风不足燃烧现象。结果表明，欠通风燃烧引起了剩余未消耗燃料蒸气的外溢，影响了MPF近场径向速度分布，减弱了中心火焰的导热反馈。最后，基于滞流层理论推导了对流主导型强流中心火灾的修正质量燃烧通量相关性，并与实验数据进行了比较吻合。
This work intends to interpret the fire interaction mechanisms of multiple pool fires (MPF). A series ofn-heptane and ethanol MPF tests with fuel pan diametersDof 0.2 m, 0.15 m, 0.05 m and differentS/D(S: fire spacing) are performed. It is revealed that the air entrainment and convection of the center fire, and the leaning of the outer fire depend on the difference of the burning rates between the center and outer fires. Besides, it is indicated that the fire merging criterion depends on fuel type. For the typical fuels used in this work, compared to ethanol MPF,n-heptane MPF has a larger criticalS/Dattributed to its higher burning rate and flame height. The results also indicate that for MPF with no air entrainment restriction, the mass burning flux and heat feedbacks of the center fire monotonically increase with decreasingS/D. However, if air entrainment is restricted, the heat feedback rates and fractions non-monotonically depend onS/D. Furthermore, an under-ventilated burning phenomenon of MPF is found and illustrated as a result of air entrainment restriction. It is indicated that the under-ventilated burning induces the spill of excess unconsumed fuel vapors, influences the near-field radial velocity profile of MPF, and weakens the conduction heat feedback of the center fire. Finally, for the center fire of convection-dominated MPF, a modified mass burning flux correlation is derived based on the stagnant layer theory, which is verified to reasonably agree well with the experimental data.
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影响因子：
4.4
作者：
R. Baldwin
通讯作者：
R. Baldwin
侧风下具有双对称开口的隔间的火灾溢出羽流
影响因子：
4.4
作者：
Gao Wei;Liu Naian;Delichatsios Michael;Yuan Xieshang;Bai Yueling;Chen Haixiang;Zhang Linhe
通讯作者：
Zhang Linhe
影响因子：
4.4
作者：
J. Ris;L. Orloff
通讯作者：
J. Ris;L. Orloff
DOI：
10.1016/s0082-0784(65)80241-7
发表时间：
1964
期刊：
--
影响因子：
--
作者：
P. Thomas;R. Baldwin;A. Heselden
通讯作者：
P. Thomas;R. Baldwin;A. Heselden
DOI：
10.1016/s0082-0784(63)80093-4
发表时间：
1963
期刊：
--
影响因子：
--
作者：
A. Putnam;C. Speich
通讯作者：
A. Putnam;C. Speich