【作者】 袁朝庆； 庞鑫峰； 张敏政；

【Author】 YUAN Zhao-qing~(1,2),PANG Xin-feng~3,ZHANG Min-zheng~2(1.College of Civil Engineering,Daqing Petroleum Institute, Daqing 163318,Heilongjiang,China;2.Research Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China;3.Daqing Oilfield Engineering Co.Ltd.Daqing 163712,Heilongjiang,China)

【机构】 大庆石油学院土木建筑工程学院； 中国地震局工程力学研究所； 大庆油田工程有限公司；

【摘要】 考虑管道泄漏后渗流场与温度场耦合,建立了埋地管道泄漏前后的三维大地温度场的物理模型及数学模型,给出了合理的热力学及流体力学边界条件。采用FLUENT软件进行埋地管道泄漏前三维稳态温度场的数值模拟,在此基础上进行了埋地管道发生点泄漏的三维瞬态温度场的数值模拟。研究结果表明:埋地管道泄漏,大地温度场变化非常明显,泄漏点附近形成相当大的泄漏热影响区,该特征为光纤光栅温度传感技术及热红外技术检测埋地管道泄漏提供了理论依据。更多还原

【Abstract】 After the underground pipeline produces leakage,the seepage field around the pipeline couples with the temperature field.The physical models and mathematical models of the 3D earth temperature fields before and after the leakage are established under considering the coupling of the seepage field with the temperature field,and the reasonable thermodynamic and hydrodynamic boundary conditions are presented.The 3D steady temperature field before the leakage is numerically simulated using FLUENT software, and based on this,the 3D instantaneous temperature field after the point leakage is also numerically simulated using the software. The simulation results show that,after the leakage of the buried pipeline the earth temperature field will produce the distinct change,the leakage will form a quite large heat affecting zone near leakage point.The study result will provide a theoretical basis for detecting the leakage of the buried pipeline using fiber bragg grating temperature sensing technique and thermal infrared technique.更多还原