强侧风不同挡风墙下棚车气动性能

选用车型为棚车,采用SIMPLEC算法和QUICK精度格式的数值计算方法对强侧风下不同挡风墙类型、不同路堤和挡风墙高度组合棚车的气动性能进行研究.研究结果表明:在防风效果上,土堤式挡风墙最差,加筋对拉式挡风墙相对最优;挡风墙类型为加筋对拉式,当路堤高度一定时,随着挡风墙高度的增加,棚车的倾覆方向由顺风倾覆向逆风倾覆转变...

Aerodynamic forces acting on a box car running on the railway alone with the wind-break wall under strong cross-wind

Based on the box car,a simulation method with SIMPLEC arithmetic and QUICK precision format was used in the research of the aerodynamic forces acting on a box car running on the railway along with the different wind-break wall under strong cross-wind.The results show that in the wind-break effect,the embankment wind-break wall is the worst of all,the tendon wind-break wall is the best of all;when the height of the embankment is constant for the tendon wind-break wall,with the increas of the height of the wind-break wall,the overturning moment of the box car will change from down the wind to headwind;when the overturning moment is 0,the relevant height of the wind-break wall on the first railway is higher than that on the second;when the height of the embankment increases,the relevant height is decrease,but the extent becomes small.The conclusions provide a reliable theoretical basis for optimization and construction of the wind-break wall on the existing railway from Lanchow to Urumqi.