中文摘要：

采用数值分析方法,计算高速列车在明线交会过程中列车所受气动载荷,建立列车系统动力学模型,求解列车在气动力作用下的横向振动.采用有限体积法对三维瞬态可压缩雷诺时均Navier-Stokes方程和RNGκ-ε方程湍流模型进行求解,并通过动网格动态铺层技术实现列车的运动,将计算出的气动力和力矩作用于车体,同时对轨道不平顺及气动载荷作用下的动力学进行分析与数值模拟.结果表明：明线列车交会过程中,在考虑气动力时,气动载荷的横向振动频率主要集中在0.5～6.5Hz范围内.列车横向振动加速度及横向平稳性的影响比只考虑轨道不平顺时明显增加,其中头车的影响最为明显.

英文摘要：

Aerodynamic forces and moments of high-speed trains in crossing on open tracks were calculated with the numerical analysis method.The train system dynamics model was established to find lateral vibrations under the action of aerodynamic forces and moments.Aerodynamic forces and moments were solved by the 3D,viscous,transient and compressible Navier-Stokes equations and RNG κ-ε equations turbulent model,and together the movement of trains was achieved with the dynamic grid overlay technology.The calculated aerodynamic forces and moments were imposed on the train bodies.Dynamics analysis and numerical simulation were made in consideration of track irregularity and aerodynamic loads.The results show as follows：when including the effect of aerodynamic forces generated in train crossing on open tracks,the lateral vibration frequencies of aerodynamic loads mainly concentrate in the 0.5～6.5 Hz range,the lateral vibration acceleration and lateral stability of trains increase more significantly than solely considering the track irregularity,and the most serious impact is found with the head car.