free shear flow

The free shear layer is a typical flow phenomenon which includes transition and turbulence. The plane jet is a type of free shear flow more complicated than the plane mixing layer.

自由剪切流是一种典型的包含转捩和湍流的流动现象，而平面射流是一种比平面混合层复杂的自由剪切流。

The sheared wavy liquid films, as an important flow, have notably different hydrodynamics and flow stability under interfacial shear stress from those of free falling liquid films.

剪切波状液膜作为一种重要的液膜流动形式，因受界面剪切力的影响，其水动力学特性和流动稳定特征与自由降膜流动明显不同。

A three-dimensional numerical model with free water surface and wall shear stress was used to analyze the water flow affected by piers.

该文采用具有自由水面和河床切应力计算的三维数学模型分析了桥墩群对河道水流的影响。