湖南大学学报（自然科学版）2012，Vol.39Issue(3)：33-37,5.
一种厢式货车被动减阻技术研究
Study of a Passive Drag Reduction Technology for Trucks
摘要
Abstract
In order to solve the problem of high aerodynamic drag for truck, a study of applying a passive drag reduction technology to the van was carried out. A simplified truck model-Ahmed model was used. And a two-equation model, SST k-ω model, was adopted as the turbulence model in the CFD simulation, then the effect of attack angle of the bottom tail plate of the Ahmed body on the flow field and aerodynamics drag was investigated, including the drag coefficient, surface pressure distribution and the tail vortex structures. The results show that the angle of the bottom plate of the van can reduce the strength of the tail vortex and thus recover the surface pressures of the tail, which in return decreases the drag. It is found that the drag coefficient reaches its minimum value when the attack angle is 10 degree and a reduction of drag about 6% is obtained.关键词
减阻/Ahmed钝体/阻力系数/SST k-ω湍流模型Key words
drag reduction/Ahmed body/drag coefficient/SST k-ω model分类
交通工程引用本文复制引用
杨小龙,胡凯耀..一种厢式货车被动减阻技术研究[J].湖南大学学报（自然科学版）,2012,39(3):33-37,5.基金项目
湖南省自然科学基金资助项目(10JJ3018) （10JJ3018）
湖南大学汽车车身先进设计制造国家重点实验室开放基金资助项目(30175013) （30175013）
