为掌握有通风的弹药舱室内较隐蔽处火灾的初期温度特性，从而为其早期探测提供指导，采用数值方法对一典型弹药舱室内4种典型火灾增长系数的角落火灾进行模拟。通过对舱室内各温度探测器位置处的数据分析发现，在通风影响下，位于通风下游的温度测点所能达到的最高温度值明显高于其对应通风上游的测点，最大温差可接近10℃以上；尽管火灾产生的热烟气最先影响的还是其正上方距离最近的温度测点，但位于火源所在上方的通风下游测点会最先达到50℃；火灾高温区域主要集中在舱室通风下游，远离火源的通风上游区域在很长时间内难以受到火灾高温热烟气的影响。
In order to grasp the early characteristics of hidden fires in the ventilation ammunition cabin and provide guidance for early fire detection, cabin corner fires with four typical fire growth coefficients were simulated by numerical method. The data of temperature detectors were analyzed. The highest temperature of detectors in the downstream ventilation was significantly higher than the corresponding detectors in the upstream ventilation, and the maximum temperature difference was above 10℃. Although the dector directly above the fire was first impacted, the dector in the downstream ventilation would first reach 50℃. The region of high temperature was mainly concentrated in the downstream ventilation, and the region of upstream ventilation away from fire was difficult to be affected.
2018,40(4): 135-138,142 收稿日期：2017-11-30
DOI：10.3404/j.issn.1672-7649.2018.04.028
分类号：U674
作者简介：王凯(1979-),男,博士,工程师,主要从事武器工业与军事技术方向的研究
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