于菲菲;王世杰;陈先锋;聂欣;张英;牛奕;

• 1:武汉理工大学资源与环境工程学院

摘要(Abstract)：

室内天然气意外泄漏后极易引起火灾爆炸事故,为避免或减少其事故的发生,得到泄漏后气体扩散规律及爆炸危险浓度分布状况,利用Fluent软件对某12 m×7 m厂房在不同泄漏孔径下泄漏扩散情况进行了数值模拟。分析风速为1 m/s时,泄漏孔径对甲烷气体扩散的影响,并将燃气管道泄漏速率的模拟结果与理论预测值进行对比分析。结果表明:所建立的数学模型和设置参数是合理的;在不同泄漏孔径下,监测受限空间内5个不同点气体分布状况,得出在风速和壁面的影响下,排气扇附近相对较危险,窗户下方相对较安全。

关键词(KeyWords)： 安全工程;甲烷气体;受限空间;泄漏孔径;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51174153,51374164);; 公安部重点研究计划项目(2011ZDYJHBXF020)

作者(Authors): 于菲菲;王世杰;陈先锋;聂欣;张英;牛奕;

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