跨坐式单轨车辆客室热舒适性分析

摘要

以重庆跨坐式单轨列车单节车辆为研究对象,将乘客作为热源,考虑太阳辐射对车室内气体流动的影响建立了物理模型.利用CFD软件对车辆客室内速度场和温度场进行了数值模拟计算,并采用热舒适性评价体系PMV-PPD(预期平均通感-不舒适人员比例)对仿真结果进行了分析评价.研究结果表明,整个车辆客室内的流场及温度场沿车厢长度方向具有良好的对称性,有不超过20%的乘客有微凉的感觉.%To meet the thermal comfort requirements of passenger's compartment, a study of the air-conditioned trains and the indoor air temperature distribution is essential. Taking Chongqing monorail train car as the research object, this paper establishes a physical model in considering the heat of passengers and the solar radiation on the vehicle, and uses commercial CFD software to simulate the velocity and temperature inside the compartment, and internationally popular PMV-PPD rating system for the evaluation of the result, which shows that:the whole flow field inside the compartment and the temperature along the length direction are of good symmetry, only less than 20％ of passergers feel a little bit cool.