低湍流度下翼型边界层及近场尾流中湍流切应力和湍流动能间的相关

The Correlation of Turbulent Shear Stress and Turbulent Kinetic Energy in The Boundary Layer and Near Wake of an Airfoil at very Low Turbulence

简述了在西北工业大学低湍流度风洞中，用热线风速仪对翼型边界层及近场尾流中雷诺正应力及切应力等的测量结果，着重讨论了雷诺切应力及湍流动能的分布规律及相关特性。结果表明，各区段的相关规律并不相同，与常规结果有明显差异。

This paper describes the velocity profile, turbulence intensity and Reynolds stress in the boundary layer and near wake of an airfoil measured in the low turbulence wind tunnel of NPU using a DISA hot wire anemometer. The distribution of Reynolds shear stress and turbulent kinetic energy was described and the correlation of these two quantities was discussed.It has shown, the correlation is different at different y position and is different from the correlation at ordinary turbulence level.