Combined effects of wind shear, rainfall and swell on mass transfer across the air-water interface

在无降雨的风浪水池中进行的测量表明，风切变气液界面的传质过程中，风速、盐度和夹带气泡对传质的影响很小。在有降雨的风浪水池中进行的测量表明，雨滴撞击促进的传质系数与降雨的垂直动量通量有很好的相关性。此外，液滴下落诱导水流的实验可视化和数值预测都表明，单个液滴撞击水面会产生液面向下的流动，并加强空气-水界面的传质。

The measurements in a wind-wave tank without rainfall show that the effects of fetch, salinity and entrained bubbles on mass transfer across the wind-sheared air-water interface are negligibly small. The measurements in a wind-wave tank with a rainfall show that the mass transfer coefficient promoted by raindrops’impingement is well correlated with the vertical momentum flux of rainfall. In addition, both experimental visualization of water flow induced by a falling drop and numerical predictions show that the impingement of a single liquid drop on the water surface generates the downward flow on the liquid side and enhances the mass transfer across the air-water interface.