| 风幕阻止飞机喷漆厂房内可燃气体扩散的数值模拟 |
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| 引用本文： | 牛坤,郝爱玲,薛岗,聂颖.风幕阻止飞机喷漆厂房内可燃气体扩散的数值模拟[J].中国安全生产科学技术,2011,7(10):22-26. |
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| 作者姓名： | 牛坤 郝爱玲 薛岗 聂颖 |
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| 作者单位： | 公安部天津消防研究所,天津,300381 |
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| 基金项目： | 公安部消防局应用创新项目(编号:2009XFCX039) |
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| 摘 要： | 应用FLUENT软件中的大涡模拟模型对飞机喷漆厂房内风幕的有效性进行了研究。以某一飞机喷漆厂房内的局部为原型构建网格模型,针对若干种工况,对甲苯蒸气的扩散过程进行了数值模拟,主要研究了甲苯量和风幕速度对甲苯扩散的影响规律。对计算结果进行分析,得到了不同工况下能有效阻止甲苯扩散的临界风幕速度,研究表明在飞机喷漆厂房内设置风幕,只要风幕速度不低于该种工况下的临界风幕速度,就可有效阻止甲苯扩散,降低厂房内可燃气体的爆炸危险性。
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| 关 键 词： | 甲苯 扩散 临界风幕速度 数值模拟 |
Numerical simulations on the air curtain in the aircraft paint shop for preventing the toluene vapor diffusion |
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| NIU Kun,HAO Ai-ling,XUE Gang,NIE Ying.Numerical simulations on the air curtain in the aircraft paint shop for preventing the toluene vapor diffusion[J].Journal of Safety Science and Technology,2011,7(10):22-26. |
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| Authors: | NIU Kun HAO Ai-ling XUE Gang NIE Ying |
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| Institution: | NIU Kun,HAO Ai-ling,XUE Gang,NIE Ying(Tianjin Fire Research Institute of MPS,Tianjin 300381,China) |
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| Abstract: | Large-eddy simulation(LES) model of FLUENT was used to simulate the effectiveness of air curtain for preventing the toluene vapor diffusion in the aircraft paint shop.Part of a aircraft paint shop was used as prototype to construct the mesh in the paper.According to different operating conditions,the diffusion of toluene vapor was simulated.The influences of the toluene quantity and the air curtain velocity on the toluene diffusion were mainly discussed. Based on the analysis of simulation results,critical ... |
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| Keywords: | toluene diffusion critical velocity numerical simulation |
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