中南大学学报（自然科学版）2024，Vol.55Issue(5)：1846-1854,9.DOI:10.11817/j.issn.1672-7207.2024.05.016
开/闭口运行对高速受电弓气动噪声特性影响的风洞试验研究
Wind tunnel test study on influence of open/close operation on aerodynamic noise characteristics of high-speed pantographs
摘要
Abstract
Wind tunnel tests of aerodynamic noise at wind speeds from 160 km/h to 324 km/h were carried out for high speed pantograph developed by Beijing CRRC CED Co.Ltd.The effects of wind speed and open/close operation status on pantograph aerodynamic noise characteristics were analyzed,and the pantograph aerodynamic noise at higher speed was predicted.The results show that the aerodynamic noise of the pantograph and its propagation characteristics are closely related to the wind speed and operating status.The panhead and nearby areas are prone to single-tone noise due to the influence of shedding vortices.The total sound pressure energy of the far-field noise increases with the power of 5.6-6.0 of wind speed.The total sound pressure levels of the pantograph far-field noise in the open/closed state are predicted to be about 106.8 dB and 106.6 dB respectively at the wind speed of 400 km/h by data fitting.关键词
高速列车/受电弓/开/闭口运行/气动噪声/风洞试验Key words
high-speed train/pantograph/open/close operation status/aerodynamic noise/wind tunnel test分类
交通工程引用本文复制引用
李波,黄思俊,靳铠龙,杨小雨,马亚民,姚华栋,牛纪强..开/闭口运行对高速受电弓气动噪声特性影响的风洞试验研究[J].中南大学学报（自然科学版）,2024,55(5):1846-1854,9.基金项目
国家自然科学基金资助项目(52172359,52372363) （52172359,52372363）
中国国家铁路集团科技研究开发计划项目(K2021J004-A) （K2021J004-A）
河北省自然科学基金资助项目(E2022105032)(Projects(52172359,52372363)supported by the National Natural Science Foundation of China （E2022105032）
Project(K2021J004-A)supported by Science and Technology Research and Development Plan of China State Railway Group Co.Ltd. （K2021J004-A）
Project(E2022105032)supported by the Natural Science Foundation of Hebei Province) （E2022105032）
