Particle exchange at the air-water interface (B04)

当雨滴撞击水面或气泡破裂时，复杂的流体力学机制会导致产生大量微小的水滴，这些水滴被喷射到周围的空气中。这些液滴可以作为最初悬浮在水中的微塑料颗粒的载体。由于降雨和气泡破裂在海洋、池塘或废水处理厂等自然和技术系统中都是极其频繁的过程，它们代表了一条潜在的高度相关的从水力到大气的迁移路径。本项目的目的是在模型实验和计算机模拟相结合的基础上对这一过程进行详细的机理理解。

When a raindrop hits a water surface or a gas bubble bursts, a complicated fluid mechanical mechanism leads to the creation of a multitude of tiny droplets which are ejected into the surrounding air. These droplets can act as carriers for microplastic particles which were initially suspended in water. Since both rain and bursting gas bubbles are extremely frequent processes in natural and technical systems such as oceans, ponds or wastewater plants, they represent a potentially highly relevant migration path from the hydro- to the atmosphere. The aim of the present project is to obtain a detailed mechanistic understanding of this process based on a combination of model experiments and computer simulations.