摘要
列车高速运行过程中,伴随列车行驶产生的列车风会对车体表面设备产生强烈的空气动力学扰动。空调系统普遍安装于车体表面,受列车风干扰严重,导致热交换效率降低、冷凝器温度升高、空调停机等一系列问题。采用大涡模拟(LES)方法,对不同车速下高速列车司机室空调冷凝风量及流场特性展开研究。研究结果表明:随着车速增加,空调冷凝风入口处压力下降,出口处压力上升,导致空调冷凝风量产生较大幅度下降。
During the high-speed running, the slipstream generated by the train will have a strong aerodynamic disturbance to the equipment on the vehicle surface. Air-conditioning systems are generally installed on the top of the train, which is seriously disturbed by the slipstream, resulting in a series of problems such as lower heat exchange efficiency, higher condenser temperature. The air-conditioning system shutdown could occur. In this paper, the large eddy simulation(LES) method was used to study the condensing air flux and flow field characteristics of the high-speed train cab air-conditioner in different speeds. The results show that with the vehicle speed increasing, the pressure condenses near the inlet of the air-conditioner while rises near the outlet, resulting in a large drop in the condensing air flux of air-conditioner.
作者
刘振环
李江春
LIU Zhenhuan;LI Jiangchun(CRRC Qingdao Sifang Co.,Ltd,Qingdao 266111,China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2019年第12期2928-2933,共6页
Journal of Railway Science and Engineering
基金
国家“十三五”重点研发计划资助项目(2016YFB1200602-11,2016YFB1200602-12)
关键词
高速列车
空调
流场特性
大涡模拟(LES)
high speed train
air-conditioner
flow field characteristic
large eddy simulation
