【摘要】 论文研究了双尺度湍流模式 ,并对其在壁面附近的长度尺度进行了修正 .选择四个基准流动—─超声速和高超声速二维压缩拐角、锥柱裙组合体绕流和斜激波 /平板湍流边界层干扰———进行了数值计算 .数值计算和实验结果的比较表明修正双尺度湍流模式对流动分离、摩阻和热流的计算具有更好的效果更多还原

【Abstract】 Two scale turbulence model and its modification by limiting the turbulence length scale for compressible turbulent flow are developed. The models are applied to four hypersonic complex flows with shock wave/boundary layer interaction. These benchmark flows are : a 2 D supersonic compression corner flow, an ogive cylinder flare flow, and an oblique shock wave/turbulent boundary layer interaction. The numerical results are compared with experimental data. It is shown that modifications made to this two scales turbulence model resulted in improved predictions of skin friction, surface heat transfer for separated flows.更多还原