摘要
研究了埋地管道周围温度场与水分场的变化关系对管道建设的影响,认为采用数值计算是预测埋地管道周围温度场的有效手段。以我国广泛分布的冻土为背景,对冻结条件下非饱和土壤水、热耦合运移问题进行了研究。探讨了冻结过程中土壤的冻结特性,建立了土壤水、热耦合运移的数学模型,并用有限差分法对土壤冻结过程进行了数值模拟计算。
The influence of temperature field and moisture field variations of buried pipeline on pipeline construction is studied and authors consider that numerical simulation calculation is an effective means to predict temperature field of buried pipelines.Taking the permafrost distributed over China as a background,transport issues in non-saturated soil water and thermal coupling are researched.Soil's freezing behaviors of freezing process is discussed and a mathematical model for coupling transfer of water and heat in soil is established,and the process of soil freezing with finite deference method based on numerical simulation technique is calculated.
出处
《油气储运》
CAS
北大核心
2009年第6期26-29,共4页
Oil & Gas Storage and Transportation
关键词
埋地管道
冰土地区
温度场
水热耦合
数值计算
buried pipeline,temperature field,numerical calculation,water and heat coupling
