| 火球热辐射改进计算模型 |
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| 引用本文： | 李玉,薛冉.火球热辐射改进计算模型[J].中国安全科学学报,2011,21(4). |
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| 作者姓名： | 李玉 薛冉 |
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| 作者单位： | 1. 中国人民武装警察部队学院灭火救援技术公安部重点实验室,河北廊坊,065000
2. 廊坊师范学院物理与电子信息学院,河北廊坊,065000 |
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| 基金项目： | 公安部应用创新计划项目 |
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| 摘 要： | 为对火球热辐射影响范围进行合理的计算和危险后果进行合理评价,借鉴点源模型和计算流体力学CFD思想,建立了火球热辐射改进计算模型,并与点源模型进行了对比。结果表明:改进模型比传统的点源模型计算结果偏大,特别是距离火球较近处。随着半径的增加,2种模型的计算结果趋于统一。当测量点的半径大于火球半径的2倍时,可以使用点源模型进行热辐射量的计算,满足工程精度要求;在近火球位置,点源模型精度较差,须用改进模型进行计算。建立的改进计算模型可以实现火球热辐射的快速计算,是有效、可行的。
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| 关 键 词： | 火球 热辐射 点源模型 沸腾液体扩展蒸气爆炸(BLEVE) 危害后果 |
A Modified Method of Calculating Thermal Radiation of Fire Ball |
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| LI Yu,XUE Ran.A Modified Method of Calculating Thermal Radiation of Fire Ball[J].China Safety Science Journal,2011,21(4). |
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| Authors: | LI Yu XUE Ran |
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| Institution: | LI Yu1 XUE Ran2(1 Fire Fighting & Rescue Techniques of Key Laboratory of Ministry of Public Security,Chinese People's Armed Police Force Academy,Langfang Hebei065000,China 2 Physics & Electrical Information Department,Langfang Teachers College,China) |
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| Abstract: | For reasonably calculate the radiation range of fire ball and evaluate its dangerous consequence,a modified thermal radiation calculation model for fire ball was established based on point source model and CFD theory.And the result was compared with that obtained by point source model.It shows that the result gotten by the modified model is bigger than that by the traditional point source model,especially under the condition near fire ball.With the increase of the radius,the results gotten by the two models... |
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| Keywords: | fire ball thermal radiation point source model BLEVE harm consequence |
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