摘要
为探究升力翼高速列车在交会时的气动性能,以三车编组某型CRH高速列车模型为研究对象,通过研究不同的列车交会速度,探讨其对升力翼高速列车相关气动性能的影响规律.研究结果表明:行驶方向的第一个翼受到的升力较大,交会侧升力较易受到干扰;随着速度增加,升力翼装置产生的升力也增加,但其增幅会降低;中间车较头车和尾车受到的侧向力影响较小;随着行驶速度的提升,列车所受到的最大侧向力会逐渐增大,但增幅会有所降低;相较于非交会侧,交会侧明显受到更强的轨侧压力;随着离交会中心线距离的增大,压力变化逐渐减小,但整体变化趋势保持一致,呈现“正-负-负-正”的整体趋势.
To explore the aerodynamic performance of high-speed trains with lift airfoil when passing by each other,a model of a CRH high-speed train with a three-car formation was taken as the research object,and the influence of different train intersecting speeds on the aerodynamic performance of high-speed trains with lift airfoil was discussed.The results show that the first airfoil in the direction of travel experiences more lift.The lift on the intersecting side is more susceptible to the non-intersecting side.As the velocity increases,the lift generated by the lift airfoil device also increases,but its amplification decreases.The middle car is less affected by the lateral force than the head car and tail car.With the increase of the speed,the maximum lateral force of the train gradually increases,but the amplification decreases.The intersecting side is obviously subjected to stronger trackside pressure than the non-intersecting side.With the increase of the distance from the centerline of the intersection,the change of pressure gradually decreases,but the overall trend remains consistent,showing an overall trend of"positivenegative-negative-positive".
作者
熊小慧
周舒佳
陈光
袁昊
XIONG Xiaohui;ZHOU Shujia;CHEN Guang;YUAN Hao(Key Laboratory of Traffic Safety on Track of Ministry of Education,Central South University,Changsha 410075,China;Joint International Research Laboratory of Key Technology for Rail Traffic Safety,Central South University,Changsha 410075,China;National and Local Joint Engineering Research Center of Safety Technology for Rail Vehicle,Central South University,Changsha 410075,China)
出处
《湖南大学学报(自然科学版)》
北大核心
2025年第12期25-37,共13页
Journal of Hunan University:Natural Sciences
基金
国家重点研发计划资助项目(2020YFA0710903)。
关键词
速度
升力翼
高速列车
空气动力学
speed
lift airfoil
high-speed train
aerodynamics
