Coherent structure and the associated mass transfer in wind-driven water-waves over canopy vegetation

本研究通过PIV、PTV和LIF的联合测量，揭示了风生水波/自由表面流在冠层植被上的相干结构和相关的质量传递。风致自由面流动中产生了一个大尺度的二次流，即朗缪尔环流，它对三维传质有很大的贡献。此外，本研究还揭示了相干涡旋与植物运动之间的相互作用，即Monami现象，并通过同时测量速度和染料浓度来考察传质过程。

The present study is to reveal the coherent structure and the associated mass transfer in wind-driven water-waves/free-surface flows over canopy vegetation by using a combination of PIV, PTV and LIF simultaneous measurements. A large-scale secondary current, i.e., Langmuir circulation, is generated in wind-induced free-surface flows and contributes largely to mass transfer in 3D fashion. Furthermore, the present study revealed the interaction between the coherent vortex and the vegetation motion, which is called the Monami phenomenon, and also examined the mass transfer by using simultaneous measurements of velocity and dye concentration.