考虑土壤耦合传热特性的地下供热管道泄漏温度场仿真分析研究

Analysis and Research on the Temperature Field of Underground Heating Pipeline Leakage Considering Soil Coupled Heat Transfer

基于k-ε湍流模型,利用Fluent软件,对地下供热管道泄露前后温度场分布进行二维数值模拟。模拟结果表明:在地下供热管道发生泄漏前后,对应于泄露发生的部位以及泄露流体出流口方向的不同,地表温度场分布也会呈现不同的变化;同时该分布还受到地表与空气的对流换热系数的影响。以上仿真结果,对于从地表温度场变化入手,判断地下供热管道是否发生泄漏及泄露状况具有一定的指导意义。

Based on the k-ε turbulence model,using fluent software to simulate the 2-D temperature field of underground heating pipeline leakage.The simulation results show that before and after the underground heating pipeline leaks corresponded to different leakage position and the location of the leak fluid outlet in different directions,the surface temperature field distribution will also show different changes.At the same time,the distribution is affected by surface and air convection heat transfer coefficient.The above simulation results have certain guiding significance for judging the situation of underground heating pipe leakage from surface temperature field changes.