障碍物地形条件下重气泄漏扩散实验的CFD模拟验证  

Simulation and verification of CFD on dispersion of heavy gas leakage in obstacle terrain

作　　者：吴玉剑[1] 潘旭海[1] 

机构地区：[1]江苏省城市与工业安全重点实验室南京工业大学城市建设与安全工程学院,南京210009

出　　处：《中国安全生产科学技术》2010年第3期13-17,共5页Journal of Safety Science and Technology

基　　金：国家"十一五"科技支撑计划资助(编号:2006BAK01B03-3);江苏省高校自然科学基金(编号:06KJD620079);江苏省"青蓝工程"优秀青年骨干教师计划项目

摘　　要：重气泄漏扩散是一种危害性较大的多发事故,而一旦在人口密集区域发生泄漏事故,周围居民将处境危险。重气泄漏后一般沿地面扩散,而地形条件是影响其扩散行为的重要因素。本文利用计算流体力学方法(CFD)对Thorney Island Trial026实验条件进行了数值模拟,考察障碍物对气体扩散的影响并与实验结果进行对比。结果表明,模拟结果与实验数据的吻合性较好,证明CFD软件能够较准确地模拟障碍物地形条件下的重气扩散过程。Release of heavy gas,which generally diffuses along the ground and is affected by terrain condition,is a harmful and frequent accident.Once a hazard gas leak accident occurs in the crowded region,the periphery peoples will face with danger.The method based on Computational Fluid Dynamics （CFD） was used to simulate Thorney Island Trial 026 in this paper and the impact of obstacles on the gas diffusion was studied.The simulation result of Thorney Island Trial 026 was compared with that of experiment,which indicated that the dispersion of heavy gas in obstacle terrain can be simulated accurately by CFD.

关 键 词：重气 泄漏扩散 障碍物 数值模拟 CFD 

分 类 号：X928.03[环境科学与工程—安全科学]