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随着地铁交通的快速发展和城市人居环境要求的不断提高,地铁沿线噪声问题日益突出,已成为城市建设与发展中人们关注的焦点之一。本文利用计算气动声学CAA(Computational Aero Acoustics)方法,对地铁列车在空旷地段匀速直线行驶和由地下隧道匀速驶出地面这两类营运工况下,地铁列车气动噪声对周围环境的影响进行数值模拟计算,评估分析地铁运行时产生的气动噪声对线路周边环境的影响。
With the rapid development of subway traffic and the continuous improvement of urban living environment, the noise problem along the subway has become increasingly prominent and has become one of the focuses of people in urban construction and development. In this paper, Computational Aero Acoustics (CAA) method is used to simulate the impact of subway train aerodynamic noise on the surrounding environment under the two operating conditions of uniform straight-line speed of subway trains in open area and the uniform underground tunnel exit from the ground Calculate, evaluate and analyze the impact of aerodynamic noise generated during subway operation on the surrounding environment of the line.