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采用RNGK－ε模型，对统平板壁面上的条柱、方柱等多种不同形状二维小障碍物的固壁剪切湍流进行数值研究，获得了小障碍物下游回流区及其发展区的时均速度场、回流分离点长度和湍流边界层厚度，计算结果与实验比较吻合良好．结果表明，小障碍物在壁面上的设置，明显地改变了平板壁面边界层的湍流形态和结构．
The RNGK-ε model is used to study the shearwall shear turbulence of many small obstacles such as bar, square column and so on. The downstream recirculation zone and its development zone of small obstacle are obtained The average velocity field, the length of the reflux separation point and the thickness of the turbulent boundary layer agree well with the experimental results. The results show that the arrangement of small obstacles on the wall obviously changes the turbulent flow pattern and structure of the boundary layer of the slab wall.