中南大学学报（自然科学版）2025，Vol.56Issue(5)：2135-2147,13.DOI:10.11817/j.issn.1672-7207.2025.05.037
高速列车受电弓区域气动噪声特性大涡模拟研究
Large eddy simulation investigation of aerodynamic noise characteristics in pantograph region of high-speed trains
摘要
Abstract
The large eddy simulation(LES)was combined with the Ffowcs Williams and Hawkings(FW-H)acoustic analogy method to numerically investigate the flow field characteristics and analyze the near/far-field aerodynamic noise distribution at the operational conditions at 400 km/h and 450 km/h.The results show that the maximum sound pressure level(SPL)attenuation of 15-16 dB occurs at the operational conditions at 400 km/h and 450 km/h,within a 5 m spanwise range centered at the pantograph region,corresponding to an attenuation rate of approximately 3.2 dB/m.The dominant noise frequencies concentrate in the 200-500 Hz band,with SPL peaks observed at 260 Hz(400 km/h)and 275 Hz(450 km/h).Along the train's longitudinal direction,the maximum SPL attenuation between the pantograph region and the trailing car reaches 4 dB.At 30 m lateral distance from the train centerline,the vertical SPL attenuation attains 6.4 dB.关键词
高速列车/受电弓/气动噪声/大涡模拟/FW-H声比拟Key words
high-speed train/pantograph/aerodynamic noise/large eddy simulation/FW-H acoustic analogy分类
交通运输引用本文复制引用
许建林,郑培杰,公沛霖,陈嘉辉,钊文昊,李鹏..高速列车受电弓区域气动噪声特性大涡模拟研究[J].中南大学学报（自然科学版）,2025,56(5):2135-2147,13.基金项目
国家自然科学基金资助项目(11962014) （11962014）
高速磁浮运载技术开放基金资助项目(SKLM-SFCF-2023-009)(Project(11962014)supported by the National Natural Science Foundation of China （SKLM-SFCF-2023-009）
Project(SKLM-SFCF-2023-009)supported by the State Key Laboratory of High-speed Maglev Transportation Technology) （SKLM-SFCF-2023-009）
