| 自然通风条件下炼钢厂煤气泄漏扩散研究 |
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| 引用本文： | 刘祖德,蔡香萍,王晶.自然通风条件下炼钢厂煤气泄漏扩散研究[J].科技导报(北京),2009,27(16):40-43. |
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| 作者姓名： | 刘祖德 蔡香萍 王晶 |
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| 作者单位： | 刘祖德,蔡香萍(中国地质大学工程学院,武汉,430074);王晶(北京理工大学机电学院,爆炸科学与技术国家重点实验室,北京100081) |
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| 摘 要： | 为评估炼钢厂中突发煤气泄漏的后果,通过建立二维简化平面模型,采用LES湍流模型对煤气在厂区的泄露扩散过程进行了数值模拟,得到了CO浓度随时空的分布规律.计算结果表明,在泄露过程中,泄漏口近的CO浓度分布比较集中;泄漏停止后,在自然风的作用下CO浓度并不能很快降低,而是呈现一个平缓的发展过程.本结果对突发煤气泄漏的报警和预案的制定有一定参考价值.
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| 关 键 词： | 炼钢厂 煤气 扩散 数值模拟 |
Coal Gas Diffusion by Natural Ventilation in Steel Works |
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| LIU Zude,CAI Xiangping,WANG Jing .Faculty of Engineering,China University of Geosciences,Wuhan ,China .State Key Laboratory of Explosion Science , Technology,School of Mechatronical Engineering,Beijing Institute of Technology,Beijing ,China.Coal Gas Diffusion by Natural Ventilation in Steel Works[J].Science & Technology Review,2009,27(16):40-43. |
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| Authors: | LIU Zude CAI Xiangping WANG Jing Faculty of Engineering China University of Geosciences Wuhan China State Key Laboratory of Explosion Science Technology School of Mechatronical Engineering Beijing Institute of Technology Beijing China |
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| Institution: | LIU Zude1,CAI Xiangping1,WANG Jing2 1.Faculty of Engineering,China University of Geosciences,Wuhan 430074,China 2.State Key Laboratory of Explosion Science , Technology,School of Mechatronical Engineering,Beijing Institute of Technology,Beijing 100081,China |
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| Abstract: | The coal gas sudden leakage from the storage tank to air can be disastrous.The diffusion law of coal gas(as light gas) must be carefully studied to prevent the damaging consequence to the workers.This paper presents a simulation of the leakage and diffusing process of coal gas using a simplified two-dimensional plane model combined with LES turbulence model, from which the law of CO concentration versus time and space is obtained.The simulation results show that(1) at the initial stage, the CO concentration... |
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| Keywords: | steel works gas diffusion numerical simulation |
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