On the basis of the Reynolds-averaged Navier-Stokes equations closed by the shear stress transport model with the consideration of streamline curvature, turbulent flow acceleration in the channel with inclined single-row oval-trench dimples, earlier found in the laminar regime, has been revealed. It is shown that the velocity in the flow core increases up to 1.4 times when dimples are densely packed. The influence of the dense arrangement of dimples on abnormal intensification of the separated flow in the stabilized area of the channel has been assessed. Absolute friction in the backflow zone in the dimple is found to grow up to 5.5 times compared with friction at the smooth channel wall.

中文翻译：

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倾斜单排椭圆形沟槽酒窝密集排列的通道内湍流加速和分流异常增强

在考虑了流线曲率的情况下，基于由剪切应力传递模型封闭的雷诺平均Navier-Stokes方程，在层流状态中较早发现的具有倾斜单行椭圆形沟槽凹坑的通道中的湍流加速被揭示。结果表明，当酒窝密集堆积时，流芯中的速度增加了1.4倍。已经评估了凹痕的密集排列对通道稳定区域中分离流异常增强的影响。与在光滑通道壁处的摩擦相比，在酒窝的回流区中的绝对摩擦被发现增长了5.5倍。