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.%基于踌坐武单轨车头车模型,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6m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.
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