Multi-scale numerical simulation of interfacial turbulent mass transfer at high Schmidt numbers

界面传热传质是决定各种热流体系统效率的重要因素，对界面传热传质现象进行预测和控制将为节能技术的创新带来巨大的效益。一般来说，当热量/质量从界面传递到周围流体时，在界面附近会形成一个薄的热/浓度边界层，因此整个传递由薄层中的微观传递机制控制。在本研究中，我们进行了一系列的数值模拟，再现了从远离界面的宏观湍流到界面附近的微观输运现象的多尺度现象。通过这些模拟，我们澄清了不同尺度现象之间的关系，并基于这些模拟中获得的数据库对它们进行了建模。

Heat and mass transfer across an interface plays a central role in deciding the efficiency of various thermal fluids system, so that prediction and control of such phenomena should bring tremendous benefit in innovating energy saving technologies. In general, when heat/mass is transferred from an interface to surrounding fluid, a thin thermal/concentration boundary layer is formed in the very vicinity of the interface so that the overall transport is governed by the microscopic transport mechanisms in this thin layer. In the present study, we conduct a series of numerical simulations, which reproduce the multi-scale phenomena from the macroscopic turbulence far from the interface to the microscopic transport phenomena near the interface. Though these simulations, we clarify the relationship between the different scale phenomena and model them based on the database obtained in these simulations.