摘要
采用风洞试验方法和数值模拟的方法研究模型车的表面压力分布,稳态数值模拟阶段采用两种近壁面网格方案配合选用两种湍流模型:1)直接求解近壁区域的k-ω SST湍流模型;2)壁面函数求解近壁区域与k-ε Realizable湍流模型结合方法。根据与风洞试验的结果对比,比较上述两种方案的计算流体力学(CFD)模拟精度,并且在瞬态模拟阶段验证子域赋值法计算精度,为后续获取该模型外部后视镜气动噪声提供基础。
With wind tunnel test method and numerical simulation method to study the surface of the scaled model of pressure distribution, the steady-state phase numerical simulation using two near wall grid combined with choose turbulence model： 1） direct solving the near wall region of the k - omega SST turbulence model; 2） wall function to solve the near wall area and k-epsilon Realizable turbulence model combining method. According to the results of wind tunnel test, compare these two schemes of computational fluid dynamics （CFD） simulation precision, and during the transient simulation validation subdomains method to calculate precision, outside rearview mirror for subsequent access to the model of pneumatic noise provides the basis.
出处
《汽车实用技术》
2018年第2期75-78,共4页
Automobile Applied Technology
关键词
CFD
表面压力测量
近壁面网格
子域赋值法
仿真精确性
CFD
Surface pressure measurement
Near wall grid
The subdomain simulation method
The accuracy of simulation
