摘要
针对水下输气管道的泄漏及扩散问题,采用实验与数值模拟方法,对气体羽流在水体中的成长和运移过程进行了研究,并基于欧拉-拉格朗日法建立了相应的数值模型。研究表明,羽流在水下的发展过程呈现压力射流、浮力射流和表面流动3个阶段,羽流锥角、水平偏移距离、最大涌流高度均随着泄漏压力、泄漏孔径的增加而增大,羽流锥角、最大涌流高度随着水深的增加而减小。基于欧拉-拉格朗日法的数值模型可以用于水下气体羽流生长过程的预测,其对羽流特性的预测与实验相符。
In terms of the leakage and dispersion problems of underwater gas pipeline,the development and migration of underwater gas plume are studied by means of experiment and simulation,and the numerical simulation model is established based on Eulerian-Lagrangian method.The underwater development process of gas plume presents three stages in this research:pressure jet stage,floating jet stage and surface flow stage;the plume cone angle,horizontal offset distance and maximum fountain height show an increasing trend with the increase of leakage pressure and leak size while the plume cone angle and maximum fountain height show a decreasing trend with the increase of water depth.The numerical model based on Eulerian-Lagrangian method is proved to be suitable for the prediction of underwater gas plume growth process,and the prediction of plume characteristics agrees with the experiment.
作者
孙媛
陈曦
周诗岽
边江
孙石涛
SUN Yuan;CHEN Xi;ZHOU Shidong;BIAN Jiang;SUN Shitao(Jiangsu Key Laboratory of Oil-Gas&New-Energy Storage and Transportation Technology,Changzhou University,Changzhou 213164,China;China University of Petroleum(East China),Qingdao 266580,China;Yuji Pipeline Company Limited of Pipe China,Jinan 250012,China)
出处
《常州大学学报(自然科学版)》
2025年第2期52-61,共10页
Journal of Changzhou University:Natural Science Edition
基金
江苏省油气储运技术重点实验室开放课题资助项目(CDYQCY202103)
常州市应用基础研究资助计划(CJ20235016)
常州大学科研启动资助项目(ZMF21020032)。
关键词
水下泄漏
输气管道
羽流
扩散
欧拉-拉格朗日法
underwater leakage
gas pipeline
plume
dispersion
Eulerian-Lagrangian method
