摘要
采用Roe格式、S-A一方程湍流模型和LU-SGS隐式算法对三个不同类型的空腔进行了模拟,并把数值计算结果和试验结果进行了比较,二者一致。通过对流过不同L/D空腔的可压缩流动进行模拟,得到了不同L/D空腔的底部压力分布、空腔内流线、等压线和等马赫数云图,分析了空腔流动类型随L/D增大转变的机理。
The three different type cavity flows are simulated numerically with the implicit approach LU-SGS and using Roe scheme and S-A turbulent model. The calculation results are consistent with the experimental data. Compressible flows over cavities with a series value of length-to-depth ratio （L/D） were investigated computationally. The pressure distributions, streamlines, pressure and roach counters are obtained. It is analyzed that the mechanism of cavity flow changes from open cavity flow to transitional cavity flow and finally to closed flow with the increasing of length-to-depth ratio （L/D）.
出处
《空气动力学学报》
EI
CSCD
北大核心
2008年第3期388-393,共6页
Acta Aerodynamica Sinica
