高速列车进出隧道空气动力学特征模型实验分析

高速列车在进出隧道时,会产生一系列气动效应,以致于在隧道周围形成噪声污染,降低列车乘坐的舒适度。模型实验是研究和解决这些问题的有效方法。在建立高速列车模型实验相似准则的基础上,利用压缩空气式高速列车模型发射系统对高速列车进入隧道过程进行了模型实验,对测试结果进行了分析,得出压缩波产生、传播的一些规律,并将测试结果与现场实测数据进行比较,验证了模型实验结果的可用性和相似准则的正确性。

Aerodynamics character model experiment analysis of high-speed train going through tunnel

When high-speed train going through tunnel, a series of aerodynamics effects will be created, which are harmful to passengers and environment. Model experiment is an efficient method to research these problems. On the basis of deducing the model experiment similitude rule,using the compression air high-speed train experiment workbench,the process of train passing through tunnel was simulated. By analyzing the results, the pressure wave creation and transportation principles were drawn out. By comparing the actual train measurement result and experiment results, the credibility of the experiment results and the correctness of the similitude rule were verified.