与地铁结构共建综合管廊通风散热研究

Research on the Ventilation and Heat Dissipation of the Utility Tunnel Built with the Subway Structure

为研究与地铁结构共建的综合管廊内部通风散热特性,应用CFD数值模拟软件对综合管廊发热舱室-电缆舱进行了全尺寸的数值模拟。分析了相邻地铁侧不同空气温度、不同对流换热系数条件对电缆舱室内部温度分布的影响。结果表明:地铁侧空气温度的变化对电缆舱室内部温度分布的均匀性以及舱室平均温度影响显著;地铁侧对流换热系数的变化,对电缆舱没有明显影响;通风量的增加,有利于舱室温度的保持以及温度的均匀分布。

In order to study the internal ventilation and heat dissipation characteristics of the utility tunnel built with the subway structure,the full-scale numerical simulation of the heating compartment-cable cabin of the utility tunnel is carried out by using CFD numerical simulation software.The influence of different ventilation volume and different air temperature and different convection heat transfer coefficient at subway side on the temperature distribution in cable cabin is analyzed.The results show that the change of air temperature on the subway side has a significant effect on the uniformity of temperature distribution and average temperature in the cable cabin;the change of convective heat transfer coefficient on the subway side has no obvious effect;the increase of ventilation volume is conducive to the maintenance of cabin temperature and the uniform distribution of internal temperature.