地道通风传热传质的数值模拟分析

The Numerical Simulation of Heat and Mass Transfer Process of the Underground Duct Ventilation

基于土壤的不同物理性能,根据一维土柱传热传质原理,利用CFD技术方法对地道通风降温过程中其降温效果进行模拟分析,计算在土壤含水率、进口风速、通风时间不同时出口温度分布,从而对比分析降温效果,为地道通风工程的实际应用提供数据依据。

Based on the different physical properties of the soil and the one - dimensional heat transfer principle, the effect of tunnel ventilation and cooling was simulated by means of CFD techniques. Three models, which simulating different soil moisture contents, different velocity of inlet air and different ventilation runtime respectively, are set to analyze the ultimate air temperature distribution. The results of simulation models of temperature reduction provides theoretical principles for the practical application of air in underground duct system.