| 变截面管道对瓦斯爆炸特性影响的数值模拟 |
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| 引用本文： | 郑有山,王成. 变截面管道对瓦斯爆炸特性影响的数值模拟[J]. 北京理工大学学报, 2009, 29(11): 947-949 |
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| 作者姓名： | 郑有山 王成 |
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| 作者单位： | 山西省煤炭规划设计院,山西,太原,030045;北京理工大学,爆炸科学与技术国家重点实验室,北京,100081 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 以气体爆炸理论为基础,利用高精度的加权本质无振荡(WENO)格式对变截面管道中的瓦斯爆炸进行了数值模拟,探讨了变截面管道对瓦斯爆炸火焰传播的影响规律,得到了变截面管道造成瓦斯爆炸强度增大的结论. 在此基础上,分析了障碍物、壁面和三波结构对瓦斯二次爆炸的影响. 结果表明,经壁面反射后的激波和三波点的碰撞都能够诱导二次爆炸的产生. 这些结论为瓦斯爆炸的预防、安全评估和防火防爆提供了重要的理论依据.
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| 关 键 词： | 瓦斯爆炸 数值模拟 加权本质无振荡(WENO) 变截面管道 |
| 收稿时间： | 2009-09-22 |
Numerical Simulation for the Influence of Variable Cross-Section Tube on Explosion Characteristics of Methane |
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| ZHENG You-shan and WANG Cheng. Numerical Simulation for the Influence of Variable Cross-Section Tube on Explosion Characteristics of Methane[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2009, 29(11): 947-949 |
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| Authors: | ZHENG You-shan and WANG Cheng |
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| Affiliation: | ZHENG You-shan1,WANG Cheng2(1.Shanxi Coal Institute of Planning & Design,Taiyuan,Shanxi 030045,China,2.State Key Laboratory of Explosion Science , Technology,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | With the basis of gas explosion theory,high accuracy WENO scheme is adopted for numerical simulation of methane explosion in variable cross-section tube.Influence of variable cross-section tube on flame propagation of methane explosion is addressed.It is found that,variable cross-section tube results in decrease of the intensity of methane explosion.On this basis,the influence of obstacle,wall and three shock wave structure on re-initiation is analyzed.The results suggested that the shock reflection on the ... |
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| Keywords: | methane explosion numerical simulation weighted essentially non-oscillatory(WENO) variable cross-section tube |
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