Particle exchange at the air-water interface (B04)

当雨滴碰到水面或气泡破裂时，一个复杂的流体机械机制导致大量微小液滴的产生，这些液滴被喷射到周围的空气中。这些液滴可以作为微塑料颗粒的载体，这些微塑料颗粒最初悬浮在水中。由于降雨和爆裂的气泡在海洋、池塘或污水处理厂等自然和技术系统中都是极其频繁的过程，它们代表了从水力到大气的潜在高度相关的迁移路径。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获得对这一过程的详细机制理解。

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.