基于CFD的城镇天然气管道泄漏扩散研究  

Study on Leakage Diffusion of CFD Based Town Natural Gas Pipeline

作　　者：杨奇睿[1] 王岳[1] 官学源 邵慧龙 牛冉[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]新疆油田公司工程技术研究院,新疆克拉玛依834000

出　　处：《石油化工自动化》2015年第5期52-56,共5页Automation in Petro-chemical Industry

摘　　要：针对城镇中埋地天然气管道的泄漏情况,研究了土壤、建筑物和风速对天然气管道泄漏和扩散的影响。利用CFD模拟计算软件对城镇中埋地天然气管道泄漏进行三维数值模拟,并得到了泄漏后三维空间不同截面位置处CH4的体积分数分布和爆炸范围及天然气泄漏时的人员疏散安全距离。研究结果为天然气管道泄漏事故现场人员疏散及安全抢修提供了理论依据。Focusing on leakage of buried natural gas pipeline, effects of soil, buildings and wind speed on natural gas pipeline leakage and diffusion are studied.3D numerical simulation is conducted for town buried natural gas pipeline leakage utilizing CFD simulation calculation software.CH4 volume fraction distribution at different cross section location in 3D space after leaking, explosion range and safe distance for staff evacuating during leaking are obtained.The research result provides a theoretical basis for personnel evacuation for natural gas pipeline leakage accident scene and safe emergency repair.

关 键 词：埋地 中压天然气管道 风速 三维数值模拟 

分 类 号：TU996.9[建筑科学—供热、供燃气、通风及空调工程]