高速列车受电弓上下臂杆气动降噪大涡模拟研究OA北大核心CSTPCD
Large eddy simulation of aerodynamic noise reduction of upper and lower arms of high-speed train pantographs
受电弓是露置于高速列车顶部的重要受流装置,其所产生的气动噪声是高速列车的主要噪声源之一.为了降低受电弓所产生的气动噪声,采用椭圆截面直杆件和椭圆截面纵向扭转杆件两种方案替代原有上下臂杆的圆形截面直杆件,基于大涡模拟(large eddy simulation,LES)结合Ffowcs Williams and Hawkings(FW-H)声类比的方法分析流场特征与气动噪声辐射,研究新型受电弓杆件对流场及近、远场气动噪声特性的影响.研究结果表明:在…查看全部>>
As an important current receiving device exposed on the top of a high-speed train,the pantograph radiates aerodynamic noise and thus has become one of the main noise sources of high-speed trains.In order to suppress the aerodynamic noise radiated from pantograph and its components,large eddy simulation(LES)of air flow was carried out around a simplified on-roof-pantograph via replacing original circular cross-section straight rods of the upper and lower arms…查看全部>>
许建林;公沛霖;周一鸣;贾永兴;李睿;杨永刚
兰州交通大学机电工程学院,甘肃兰州,730070兰州交通大学机电工程学院,甘肃兰州,730070中车山东机车车辆有限公司,山东济南,250022兰州交通大学机电工程学院,甘肃兰州,730070兰州交通大学机电工程学院,甘肃兰州,730070兰州交通大学机电工程学院,甘肃兰州,730070
交通运输
高速列车受电弓臂杆气动噪声大涡模拟
high-speed trainpantographsarm rodaerodynamic noiselarge eddy simulations(LES)
《中南大学学报（自然科学版）》 2024 (5)
1855-1866,12
国家自然科学基金资助项目(11962014)(Project(11962014)supported by the National Natural Science Foundation of China)
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