【摘要】 地下水渗流能够增强地埋管与土壤之间的换热,为研究地下水渗流对土壤温度的影响,建立二维热渗耦合传热模型。通过数值模拟的方法研究了渗流速度、管群布置形式、渗流方向对地埋管周围土壤温度的影响。研究结果表明:1)地下水渗流能够使沿着渗流方向的热量拉伸和垂直于渗流方向的热量压缩,且不同渗流速度对其影响程度是不同的; 2)存在渗流时,形式2中土壤温度比形式1低,说明减少沿着渗流方向的布管有利于地埋管与土壤之间的换热; 3)渗流方向角在52.5°时地埋管周围的土壤平均温度最低,表明此时地埋管与土壤之间的换热效果最好。更多还原

【Abstract】 Groundwater seepage can enhance the heat transfer between the buried pipe and the soil,in order to study the influence of groundwater seepage on soil temperature. Establish a twodimensional heat-permeability coupled heat transfer model.The effects of seepage velocity,pipe group layout,and seepage direction on the soil temperature around buried pipes are studied by numerical simulation. The research results show that: 1) Groundwater seepage can stretch the heat along the seepage direction and compress the heat perpendicular to the seepage direction,and the influence of different seepage speeds on it is different; 2) When there is seepage,the soil temperature in form 2 It is lower than form 1,indicating that reducing the pipes along the seepage direction is beneficial to the heat exchange between the buried pipe and the soil; 3) The average temperature of the soil around the buried pipe is the lowest when the seepage direction angle is 52.5°,which indicates that this time The heat exchange effect between the buried pipe and the soil is the best.更多还原