埋地并行管道温度场模拟的边界条件  

Boundary conditions for temperature field simulation of buried parallel pipelines

作　　者：张志宏[1] 李可夫[1] 张文伟[1] 张黎明[1] 耿晓梅[1] 

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《油气储运》2013年第6期601-603,632,共4页Oil & Gas Storage and Transportation

摘　　要：冷热管道并行敷设,将在管道及其周围土壤形成特殊的温度场。探讨了并行管道传热数值模拟过程中合理的传热计算边界条件,结果表明:对于埋地并行管道温度场,当计算区域足够大时,左右边界采用第一类边界条件和第二类边界条件的计算结果相同;采用第一类边界条件的计算结果偏大,而采用第二边界条件的计算结果偏小,在深度方向计算区域小于10倍管径的情况下,差别较明显;计算区域横向尺寸不应小于管道直径的20倍,而深度(纵向)方向的尺寸不应小于管径的10倍。研究结论可为管道工程设计和运行方案优化提供借鉴。When cold and hot pipelines are laid in parallel, a special temperature field will be formed around the pipelines and in their surrounding soil. The reasonable heat-transfer calculation boundary conditions during heat-transfer numerical simulation of parallel pipelines are discussed. The results indicate that for the temperature field of buried parallel pipelines, when the computational domain is large enough, the calculation results using the first type and second type of boundary conditions for left and right boundaries are identical, the calculation results using the first type of boundary conditions is slightly greater, that using the second type of boundary conditions is slightly smaller, and their difference is significant when the computational domain in the depth direction is 10 times smaller than the pipe diameter, the transverse dimension of the computational domain should not be 20 times smaller than the pipe diameter, and the dimension in the depth （vertical） direction should not be 10 times small than the pipe diameter. The research conclusions can provide reference to the pipeline engineering design and operation personnel to optimize their design and operation plans. （7 Figures, 6 References）

关 键 词：管道 并行敷设 温度场 模拟 边界条件 

分 类 号：TE832[石油与天然气工程—油气储运工程]