隧道结构对高速列车穿行过程气动特性的影响OA北大核心CSCDCSTPCD
Influence of tunnel structure to aerodynamic behaviors of a high-speed train passing through
以CRH2型高速列车穿行隧道过程的气动特性为研究对象,建立了列车模型及具有不同缓冲结构、不同阻塞比的隧道计算模型,并与相同工况下的模型实验进行对比,验证了仿真模型的可行性.以k-ε湍流模型为基础,对高速列车以不同速度进入具有不同缓冲结构、不同阻塞比的隧道时的外流场进行了仿真模拟.分析了列车在进入隧道时压缩波的产生机理,得到了列车表面风口在车体进入隧道过程中的压力波动情况.仿真结果表明:隧道缓冲结构的缓冲性能按抛物线型、线性、不连续性的顺序依次减小…查看全部>>
The train model and tunnel models with various buffer structures and blockage ratios were built to investigate aerodynamic behaviors of a CRH2 high-speed train. The above models were tested by comparing the experimental results under the same work conditions which were described and submitted in the literature. Based on the k-e turbulent model, the flow of air field out the train was simulated under different conditions: the train passed tunnel with various …查看全部>>
徐宇工;张永昌;刘俊莲;曹瑞
北京交通大学机械与电子控制工程学院,北京100044北京交通大学机械与电子控制工程学院,北京100044内蒙古一机集团北方实业有限公司,内蒙古包头014032北京交通大学机械与电子控制工程学院,北京100044
交通工程
高速列车隧道缓冲结构阻塞比数值模拟
high-speed train tunnel buffer structure blockage ratio numerical simulation
《北京交通大学学报》 2012 (3)
1-5,5
科技部“十一五”科技支撑计划项目资助(009BAG12A07-C02)
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