不同轨面高度对跨坐式单轨车气动性能的影响  

The Effect of Different Rail Heights on Aerodynamic Performance of Straddle Type Monorail Vehicles

作　　者：杜子学[1] 张杰[1] 赵科[2] 

机构地区：[1]重庆交通大学机电与汽车工程学院,重庆400074 [2]河南工程学院机械工程系,郑州451191

出　　处：《城市轨道交通研究》2011年第11期43-46,共4页Urban Mass Transit

基　　金：国家科技支撑计划项目(2007BAG06B01)

摘　　要：基于跨坐式单轨车头车模型,运用数值模拟方法,通过设置不同的计算域来模拟跨坐式单轨车轨面与地面的高度,分析在迎风条件下不同轨面高度对其气动性能的影响。分析结果表明:随着轨面高度的增加,单轨车的气动性能随之改善,且在离地高度6 m以上单轨车的气动性能变化趋于平缓。但不同轨面高度下的风阻值差异较小,这表明单轨车轨面高度的变化对其气动性能影响较小,重庆跨坐式单轨车不同路段轨面高度的设置是合理的。Based on the head model of Straddle-type Monorail Vehicle, by application of numerical simulation method and by setting different computing domains, the height of straddle type monorail vehicle of the orbital plane and ground is simulated and the impact of different orbital plane height on the aerodynamic performance under the windward condition is analyzed. The results of the analyses show that as the rail surface height increases, the monorail vehicle＇s aerodynamic performance improves along with it and at the height of 6m above, aerodynamic performance changes of monorail vehicle tend to smooth. But there is a little difference in wind resistance under the different orbital plane height. This indicates that the change in orbital plane height has a little effect on its aerodynamic performance. The orbital plane height setting of Chongqing straddle type monorail vehicle for orbital plane heights of different sections is reasonable.

关 键 词：跨坐式单轨车 数值模拟 气动性能 

分 类 号：U270[机械工程—车辆工程]