| 隧道内危险性介质泄漏扩散的数值模拟 |
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| 引用本文： | 李萍,丁珏,翁培奋.隧道内危险性介质泄漏扩散的数值模拟[J].空气动力学学报,2006,24(2):256-260. |
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| 作者姓名： | 李萍 丁珏 翁培奋 |
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| 作者单位： | 上海大学上海市应用数学和力学研究所,上海,200072 |
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| 基金项目： | 上海市高等学校青年科学基金,教育部青年教师教学科研奖励基金,上海市重点学科建设项目资助. |
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| 摘 要： | 化学危险品的意外泄漏已经造成很多事故,尤其是在隧道这样相对封闭的空间内,事故发生的概率更大。为了有效地控制和预防事故的发生,本文以RANS方程为控制方程,采用基于simple算法的有限体积法,对隧道内危险性介质泄漏扩散过程进行了数值模拟。讨论隧道内危险品(乙炔)运载车在行驶过程中发生小孔泄漏扩散的情况,计算得到了危险性介质浓度的时间和空间分布规律。同时,分析了运载车不同行驶速度和危险品泄漏释放方式(水平释放和垂直释放)对其扩散过程的影响,为进一步了解危险性介质的扩散行为和控制方式提供了理论基础。
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| 关 键 词： | Navier-Stokes方程 化学危险品 泄漏扩散 隧道 |
| 文章编号： | 0258-1825（2006）02-0256-05 |
| 收稿时间： | 2005-01-12 |
| 修稿时间： | 2005-01-122005-05-12 |
The numerical simulation of hazardous materials leakage and dispersion process in a tunnel |
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| LI Ping,DING Jue,WENG Pei-fen.The numerical simulation of hazardous materials leakage and dispersion process in a tunnel[J].Acta Aerodynamica Sinica,2006,24(2):256-260. |
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| Authors: | LI Ping DING Jue WENG Pei-fen |
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| Institution: | Shanghai Instiuae of Appl. Math and Mech., Shanghai University , Shanghai 200072, China |
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| Abstract: | A lot of accident cases have been caused by the leakage and dispersion process of hazardous materials.If the leakage cases happen in the close space like tunnel,the danger will be serious.In order to prevent and reduce this accident, the Reynolds-averaged Navier-Stokes equations were solved based on the method of finite control volume and Simple scheme,and the numerical computation of small beach leakage of the truck filled with hazardous materials were conducted.The profiles of concentration are given,and different velocity and leakage position were discussed,which will give theory basis of controlling the dispersion and reducing leakage accident. |
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| Keywords: | Navier-Stokes equations hazardous materials leakage dispersion tunnel |
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