综合管廊电缆舱通风数值模拟研究

Study on Numerical Simulation of Utility Cable Tunnel Ventilation System

采用数值模拟的方法对电缆舱通风进行研究,建立了湍流数学模型,分析电缆舱空气对流换热,分析得到随着通风距离的增长,降温效果减弱,导致局部温度过高,电缆舱要进行合理的通风分区;冬季要校核通风量以免舱室过冷;优化电缆布置,电缆远离侧壁布置增强通风散热的效果。

The performance of cable tunnel ventilation system is studied by numerical simulation method. The turbulence model is built to simulate the air convection heat transfer in cable cabin. Analyzing the simulation results, as the increase of the ventilation system cooling effect weakened, causing the local temperature is too high, so the cable ttmnel need reasonable ventilation partition. In winter,ventilation quantity need to be check to avoid ttmnel too cold. Optimization of cable layout, comparing with the close to the cabin wall layout, cables away from the side wall, enhancing the effect of ventilation and heat dissipation.