Wind-induced turbulent entrainment across a stable density interface
Wind-induced turbulent entrainment across a stable density interface
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风引起的湍流夹带穿过稳定的密度界面
作者：
Jin Wu
在实验室风浪槽中研究了密度界面上的湍流夹带，引入了由两均质流体层组成的稳定分层系统。结果表明，混合层势能的变化率与风所做功的速率成正比。然而，风所做的功中只有很小一部分用于界面混合或形成季节性温跃层。根据实验结果，导出了夹带率与密度分层和风摩速度的关系式。
Turbulent entrainment across a density interface is studied in a laboratory wind–wave tank in which a stably stratified system consisting of two homogeneous fluid layers is introduced. The results indicate that the rate of change of the potential energy of the mixing layer is proportional to the rate of work done by the wind. However, only a very small fraction of the work done by the wind is used for interfacial mixing or developing a seasonal thermocline. A formula relating the entrainment rate to the density stratification and the wind-friction velocity is derived from the experimental results.