摘要
高速列车大都采用电动车组的方式,轴重越来越轻,在强横风中极有可能造成车辆的倾覆。而在不同风向角和地面条件下列车的气动性能也会发生变化。采用大型流场计算软件FLUENT6．0 对列车在不同风向角下的气动力系数进行了计算,分别对列车在平坦路面上、路堤上以及桥梁上3种情况进行了数值模拟。计算结果表明:头车在平地上受到的侧滚力矩较大,而中间车在桥梁上受到的侧滚力矩较大。
EMUs are very popular for high speed trains, which are easily get overturned in case of strong lateral wind due to lower and lower axle weight. The train aerodynamic performance will change with different yaw angle and ground condition. The aerodynamic coefficients of different yaw angle are calculated using the FLUENT 6.0 software. Simulations are carried out for trains in straight and plain rails, embankments and bridges. The calculation results show that the front power car are attacked by greatest side rolling torque in straight and plain rails and the same for the middle cars while in bridges.
出处
《机车电传动》
2006年第3期33-35,共3页
Electric Drive for Locomotives
关键词
高速列车
气动性能
升力
侧向力
侧滚力矩
风向角
high speed train
aerodynamic coefficient
lift force
side force
side rolling torque
yaw angle
