| 瓦斯爆炸传播过程中障碍物激励效应的数值模拟 |
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| 引用本文： | 徐景德,杨庚宇. 瓦斯爆炸传播过程中障碍物激励效应的数值模拟[J]. 中国安全科学学报, 2003, 13(11): 42-44 |
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| 作者姓名： | 徐景德 杨庚宇 |
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| 作者单位： | 1. 中国科技大学;华北科技学院
2. 华北科技学院 |
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| 基金项目： | “973”重点研究项目 (2 0 0CB4 12 70 7),国家自然科学基金项目 (5 9874 0 30 ) |
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| 摘 要： | 笔者对瓦斯爆炸传播过程中的障碍物的激励效应的物理机制进行了分析 ,并构建了相应的物理模型 ,设计了 3种情况下 ,对冲击波经过障碍物附近时的变化特征进行了数值模拟。结论表明 ,非燃烧区的障碍物同样存在激励效应 ,激励效应取决于瓦斯爆炸冲击波的初始强度 ,即爆轰状态激励效应最为强烈。
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| 关 键 词： | 瓦斯爆炸 冲击波 激励效应 数值模拟 |
| 修稿时间： | 2003-05-01 |
Numerical Simulation of the Barricade Encouraging Effect in Process of Gas Explosion Propagation |
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| Xu Jingde ,,Assoc.Prof. Yang Gengyu ,Porf.. Numerical Simulation of the Barricade Encouraging Effect in Process of Gas Explosion Propagation[J]. China Safety Science Journal, 2003, 13(11): 42-44 |
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| Authors: | Xu Jingde Assoc.Prof. Yang Gengyu Porf. |
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| Affiliation: | 1 University of Science & Technology of China 2 North China Institute of Science & Technology |
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| Abstract: | The physical mechanism of the barricade's encourage effect in the gas explosion propagation is analyzed and the corresponding physical model is set up. The changing characteristics in which the explosion wave passing nearby the barricade of three designed cases are subjected to numerical simulation. The conclusion demonstrates that the barricades encouraging effect exists not only in the burning area, but also in the non-burning area. The encouraging effect is dominated by the initial strength of the explosion wave, and the strongest effect exists in case of detonation. |
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| Keywords: | Gas explosion Explosion wave Encouraging effect Numerical simulation |
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