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首页> 外文期刊>Journal of aerospace engineering >Aerodynamic Effects of Viaduct-Cutting Connection Section on High-Speed Railway by Wind Tunnel Tests
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Aerodynamic Effects of Viaduct-Cutting Connection Section on High-Speed Railway by Wind Tunnel Tests

机译：风洞试验高速铁路高架桥连接部分的空气动力学效应

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摘要

The wind environment and aerodynamic characteristics of vehicles are easily affected by the structural form of the railway. To investigate the aerodynamic effects of viaduct-cutting connection sections on vehicles, models of standard cutting, viaduct, and China Railway Highspeed (CRH2) trains at a scale of 1:20 were tested in wind tunnel tests. The wind speed profiles and vehicle aerodynamic coefficients were developed using a Cobra probe and balance, respectively. Additionally, the effects of wind barriers were applied. The test results indicate that the wind speed profile at the railway juncture is almost independent of the lateral positions at the same position. The aerodynamic influence of vehicles on different tracks (windward and leeward railway tracks) is different. Moreover, wind barriers can change both wind speed profiles and aerodynamic coefficients and significantly reduces wind speed and changes the aerodynamic coefficients to improve vehicle wind-resistant performance.
机译：车辆的风环境和空气动力学特性容易受到铁路结构形式的影响。为研究高架桥连接部分对车辆的空气动力学效果，标准切割，高架桥和中国铁路高速（CRH2）列车的型号在风洞试验中进行了测试。使用COBRA探针和平衡开发风速型材和车辆空气动力学系数。另外，施加风屏障的影响。测试结果表明铁路时的风速轮廓几乎与相同位置处的横向位置无关。车辆对不同轨道（迎风和封锁铁路轨道）的空气动力学影响是不同的。此外，风屏障可以改变风速型材和空气动力学系数，并显着降低风速并改变空气动力学系数，以改善车辆防风性能。

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