摘要
为了研究不同的湍流模型对数值模拟结果精度和数值准确度的影响,采用了PRO-E和ICEMCFD进行模型的建立和网格的生成,使用FLUENT软件对高速列车外流场进行分析,在其他条件不变的情况下,湍流模型选用双方程k-ε模型和标准k-ω模型,通过对流场的受力和速度分布图的分析对比,可以看出RNGk-ε得出的数值结果与真实情况最接近,更加符合列车外流场气动的特性。
To study the impact of the numerical simulation result precision and value accuracy under different turbulence models, this paper establishs the model by PRO-E, generates the grid by ICEM CFD, analgzes the flow field of high-speed train by FLUENT, and selects the two equation k-ε model and standard k-ω model for the turbance model. Through the analysis and comparision of the force and speed map of the flow field, it can be seen that the simulation results with RNG k-ε are mostly close to the real situation, and mostly meet the characteristics of turbulace flow around the high-speed train.
出处
《铁道机车车辆》
北大核心
2010年第1期11-15,共5页
Railway Locomotive & Car
关键词
湍流模型
外流场
数值模拟
高速列车
turbulence model
external flow field
numerical simulation
high-speed train
