摘要
利用先进的CFD动网格技术实现了汽车在隧道中超速、超车行驶过程的二维非稳态空气动力特性数值模拟,并与相同条件下非隧道行车时的仿真结果进行对比。研究结果表明:汽车在隧道中超速、超车时,流场和压力场变化幅度较大,超车车辆之间气动干扰影响较大,汽车的行驶安全性降低。
By virtual of advanced CFD dynamic mesh technology,the 2-D transient simulation of vehicle's speeding process and overtaking process were realized,and the vehicles's aerodynamic characteristics were obtained.A comparison of aerodynamic characteristics between the road tunnel and non-tunnel road was presented.The results show that the flow field and pressure field change greatly;the aerodynamic effect is larger than in non-tunnel condition;the safety performance of the vehicles is reduced during the process of speeding and overtaking in tunnel.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2012年第3期465-468,472,共5页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
公路隧道
汽车空气动力学
数值模拟
超速超车
动网格
road tunnel
automotive aerodynamics
numerical simulation
speeding and overtaking
dynamic mesh
