摘要
使用CFD方法研究立方体周围流场。Silsoe研究院建造了一个边长为6m的立方体作为研究钝体周围的压力场和速度场的实验对象。相应于这个立方体的全尺度实测结果、风洞实验结果和数值计算结果在很多文献中可以查到。本文使用标准k-ε模型和RNGk-ε模型,考察当来流速度为对数率速度剖面时,不同的来流湍动能设置对计算结果的影响,所得计算结果与已有的全尺度实测结果作比较,得到了有意义的结论。
The air flow moving towards a cubic is investigated following computational fluid dynamics (CFD). To obtain the pressure field and velocity field around a bluff body, the Silsoe Research Institute has constructed a 6m cubic. Full-scale test results, wind-tunnel results and computational results are available in a lot of literatures. Here the standard k-ε model and RNG k-ε model are adopted. When the mean inflow velocity profile is represented by the logarithm law, the influence of different inflow turbulence kinetic energy on computational results is discussed. The computational results are compared with Full-scale test results to draw a significant conclusion.
出处
《应用力学学报》
EI
CAS
CSCD
北大核心
2008年第2期258-262,共5页
Chinese Journal of Applied Mechanics
关键词
标准k-ε模型
RNGk-ε模型
入口湍动能
流动分离和再附
standard k-ε model, RNG k-ε model, inflow turbulent kinetic energy, flow separation and reattachment
作者简介
陈素琴，女，1966年生，博士，同济大学数学系，副教授；研究方向——计算流体力学。E-mail：tjchensuqin@mall．tongji．edu.cn
