摘要
采用两方程湍流模型进行稳态数值仿真被广泛应用于与汽车空气动力学相关的工程实践及科学研究中。基于统一的硬件平台和相关的参数设置,采用Realizable k-ε模型、k-ωSST模型和4种低雷诺数模型对某一车身全尺寸模型外部绕流场进行数值计算。以同一模型的风洞试验数据为准,通过计算获得气动升/阻力、车身表面压力和尾迹区流场结构等相关信息,对比研究了不同两方程模型对汽车外流场的计算能力。
The steady-state numerical simulations with two-equation turbulence models are widely used in engineering practice and scientific research related to vehicle aerodynamics. Based on the same hardware platform and related parameters setting,Realizable k-ε model,k-ω SST model and four low Reynolds number models are adopted to conduct numerical calculation on the flow field around a full scaled vehicle body model. According to the related information on aerodynamic lift and drag,the surface pressure on vehicle body and the wake structure of flow field,with the wind tunnel test data of the same model as reference base,the calculation abilities of different two-equation models regarding vehicle exterior flow filed are comparatively studied.
出处
《汽车工程》
EI
CSCD
北大核心
2016年第11期1283-1287,1337,共6页
Automotive Engineering
基金
上海市地面交通工具风洞专业技术服务平台(16DZ2290400)资助
关键词
轿车
气动性能
两方程模型
稳态数值仿真
car
aerodynamic performance
two-equation model
steady-state numerical simulation
