140km/h地铁列车隧道气动噪声大涡模拟研究
Study of aerodynamic noise for metro trains running in tunnels at 140 km/h based on large eddy simulation
摘要
城际地铁列车以140 km/h速度运行时,产生的气动噪声会对乘客的乘坐舒适性产生负面影响.文章针对某快速地铁列车以140 km/h速度在隧道内运行受到的气动力及产生的气动噪声开展研究,通过STAR-CCM+仿真软件对1:20精细化建模的地铁列车模型进行网格划分,采用大涡模拟(LES)方法开展数值计算.结果表明:尾车相较于头车和中车,受到的阻力系数和升力系数最大,在所有转向架中,转向架1受到阻力系数和升力系数最大,头车司机室下方、转向架1前方出现最高声功率级区域,列车头车司机室及其底部转向架、受电弓等区域噪声较大.研究能有效评估140 km/h速度下地铁列车产生的气动噪声声功率级,为之后快速地铁噪声治理研究提供参考.
Aerodynamic noise of intercity metro trains running at 140 km/h will affect passenger comfort.This study examines the aerodynamic force and noise of a fast metro train running at 140 km/h in tunnels.A detailed 1:20 scale metro train model was meshed and simulated using STAR-CCM+simulation software with a large eddy simulation(LES)method.Results indicate that the trailing car experiences the highest drag and lift coefficients compared to the leading car and the middle cars.Among all bogies,bogie 1 has the high-est drag and lift coefficients.The highest sound power level occurs below the leading car's cab,ahead of bogie 1.Noise is particularly strong around the leading car's cab,its underbody bogie,and the pantograph.This study effectively evaluates the aerodynamic noise sound power level of metro trains running at 140 km/h,offering valuable insights for future noise control research on fast metro trains.
年，卷(期)：
2026, (1)
分类号：
U231
U270.1+6
机标分类号：
U260.331
U45
U661.1
在线出版日期：
2026年6月8日
基金项目：
DJTL-YBXM-2024-01:中电建铁路建设投资集团有限公司科技项目，
