水动力学研究与进展B辑
水動力學研究與進展B輯
수동역학연구여진전B집
JOURNAL OF HYDRODYNAMICS
2014年
3期
394-399
,共6页
胡兴军%秦鹏%廖磊%郭鹏%王靖宇%杨博
鬍興軍%秦鵬%廖磊%郭鵬%王靖宇%楊博
호흥군%진붕%료뢰%곽붕%왕정우%양박
computational fluid dynamics%heavy-duty truck%crosswind%cross viaduct%aerodynamic loads%flow field
In our numerical simulation the hybrid mesh and the SST k-w turbulence model are adopted to investigate the varia-tions of the aerodynamic loads and the flow field of heavy-duty trucks while crossing a viaduct with 1.1 m high fences in a crosswind at a velocity of 20 m/s. The results show that, with the protection of a fence, the side force is weakened, and the rolling and yaw moments are strengthened while the truck is crossing the viaduct, which relatively reduces the roll-over safety and the driving stability of the truck. Meanwhile, the direction of the side force changes when the truck enters the viaduct, which makes the roll-over safety and the driving stability the lowest during the process.
