摘要
燃气管道的泄漏过程非常复杂,其发生、发展的一系列过程影响因素众多,存在诸多不确定性,且事故表现形式多样,因此一直都是管道安全技术领域的重要课题。国内外的相关研究非常活跃,针对泄漏过程的不同阶段、燃气种类和扩散介质的不同,相继提出了高斯模型、Sutton模型、BM模型、FEM3模型等经典气体扩散模型。给出了这些模型的适用范围,对比了其优缺点。在此基础上,介绍了AFTOX模型、HEGADAS模型、DEGADIS模型、HGSYSTEM模型、INPUFF模型、SLAB模型等近年比较流行的气体扩散模型,并介绍了概率密度函数(PDF)输运方程模型、条件矩封闭模型、简化的PDF模型、关联矩模型等爆炸/火焰模型。根据工业生产需求,对燃气管道泄漏过程进行了分析,阐述了研究的分类并指出了该技术领域研究中存在的问题和未来发展的方向。
The gas pipeline leak process is subject to many uncertain factors during its occurrence and progress with a variety of accident forms,therefore,the research of gas pipeline leak process is always an important issue in the technical field of pipeline safety.And the research is very active at home and abroad.Several classic gas diffusion models have been proposed,such as Gaussian model,Sutton model,BM model,FEM3 model etc.,which are distinguished by the different stages of leak process and diffusion medium types.The application scope of these models has been given respectively,and their advantages and disadvantages have been compared,too.On this basis,some other popular gas diffusion models which have been proposed in recent years are introduced,such as AFTOX model,HEGADAS model,DEGADIS model,HGSYSTEM model,INPUFF model,SLAB model,etc..Furthermore,some explosion/flame models are also described,such as the probability density function(PDF)transport equation model,conditional moment closure model,the simplified PDF model,association moment model.According to the requirements of industrial production,the leakage process of gas pipeline has been analyzed,and the classification of study has been explained.The problems in the current study and the future developments of the technical field of pipeline safety have also been pointed out.
出处
《油气储运》
CAS
北大核心
2011年第8期608-613,593-594,共6页
Oil & Gas Storage and Transportation
基金
国家质量监督检验检疫总局公益性行业科研专项课题"埋地管道泄漏事故分析与事故应急关键技术研究"
201010025-04
关键词
燃气
管道
泄漏
扩散
爆炸/火焰
模型
研究进展
gas leakage,pipeline,diffusion model,explosion/flame,research progress
