城燃管道街道峡谷泄漏扩散CFD数值模拟  

CFD Modeling of the Releases and Dispersion of Accidental City Gas Pipeline in Urban Street Canyons

作　　者：程浩力[1,2] 刘德俊[1] 刘倩倩[3] 高忠杰[1,4] 姜东方[1] 邓宗竹[1] 李明德[1] 

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [2]中国石油集团工程设计有限责任公司北京分公司,北京100085 [3]北京科技大学土木与环境工程学院,北京100083 [4]中国船舶燃料大连有限公司,辽宁大连116600

出　　处：《石油化工高等学校学报》2011年第4期60-63,共4页Journal of Petrochemical Universities

基　　金：辽宁省科技厅资助项目(2008230004)

摘　　要：城市燃气管道的安全时常受到市政建设的威胁而破坏,与天然气管线野外泄漏的情况不同的是,市区复杂的建筑环境会对气体的扩散情况造成干扰,严重危害人员财产安全。选择CFD数值模拟法,对城市街道峡谷内燃气管线的扩散泄漏进行了分析。基于二维街道峡谷断面模型,对截断阀关闭前后燃气泄漏扩散的基本规律进行了分析研究。数值模拟结果表明,风对燃气的扩散起主导作用,街道峡谷内形成的独立而稳定的涡旋气流场会使燃气聚集并且难以扩散。City gas pipelines are always under the threat of municipal construction.Unlike in the wild,the building of the city will cause lots of trouble to the dispersion of the gas released,and the lives and property safety of people may be threatened.The dispersion of the city gas released in the street canyons was analyzed based on the two-dimensional CFD model.The situation before and after the shutting down of the block valves were studied respectively.The numerical simulation results show that the wind plays a leading role on the dispersion,and the aspect of the street canyon has significant effects on inner vortex airflow fields which will make the gas difficult to disperse.

关 键 词：城市燃气 泄漏扩散 数值模拟 街道峡谷 涡旋流场 

分 类 号：TE832[石油与天然气工程—油气储运工程]