摘要
采用CFD数值模拟方法,应用商业CFD软件Fluent,采用其提供的滑移网格技术来处理超车过程,实现了超车过程的瞬态空气动力特性数值模拟。并且研究了不同车型、车速以及侧向间距对超车过程中汽车瞬态空气动力特性的影响。研究结果表明:超车过程中两车气动力系数有显著变化;气动特性的变化幅度与相会车的侧向间距成反比例关系。
The sliding mesh which offered by commercial computational fluid dynamics （CFD）software Fluent was adopted to realize transient aerodynamic characteristics numerical simulation during the overtake process. And the influence of different vehicle type, the vehicle speed and the lateral spacing on the vehicle transient aerodynamic characteristic during the overtaking process has been research. The simulation results show that the vehicle aerodynamic coefficient has a remarkable change, the change scope of aerodynamic properties have inverse proportion with the lateral spacing.
出处
《农业装备技术》
2009年第3期23-26,共4页
Agricultural Equipment & Technology
基金
河南省自然科学基金(082300440100)
