Numerical simulation of the aerodynamic characteristics of heavy-duty trucks through viaduct in crosswind

• Published in: Journal of hydrodynamics. Series B Vol. 26; no. 3; pp. 394 - 399
• Main Author: 胡兴军 秦鹏 廖磊 郭鹏 王靖宇 杨博
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01.07.2014; Springer Singapore
• Subjects: aerodynamic loads; computational fluid dynamics; Computer simulation; cross viaduct; crosswind; Crosswinds; Driving; Engineering; Engineering Fluid Dynamics; Fences; flow field; Heavy duty trucks; heavy-duty truck; Hydrology/Water Resources; Mathematical models; Numerical and Computational Physics; Simulation; Trucks; Viaducts; 侧风; 数值模拟; 混合网格; 湍流模型; 空气动力学特性; 行驶稳定性; 重型卡车; 高架桥; crosswind; heavy-duty truck; aerodynamic loads; flow field; cross viaduct; computational fluid dynamics
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(14)60044-5

In our numerical simulation the hybrid mesh and the SST k-ω turbulence model are adopted to investigate the variations 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.