The fluid dynamics of intrusions

这个项目的目的是调查侵入，主要是混合良好的流体进入密度分层环境的水平流动。这种流动在大气和海洋中是基本的，但人们对它们知之甚少，因为它们是由入侵和分层环境中产生的内波之间的强烈反馈控制的。现有的研究依赖于计算密集的模拟、模拟实验或适用性有限的特别模型。该项目期望为这种流动开发和验证一个新的、广泛适用的和严格的数学模型。预期的好处包括改进火山灰扩散模型，以及更好地了解对气候至关重要的海洋和大气流动。

This project aims to investigate intrusions, the primarily horizontal flows of well-mixed fluid into density-stratified surroundings. Such flows are fundamental in the atmosphere and oceans, but they are little understood because they are controlled by strong feedback between the intrusion and internal waves generated in the stratified ambient. Existing studies rely on computationally intensive simulations, analogue experiments or ad-hoc models of limited applicability. This project expects to develop and validate a new, broadly applicable and rigorous mathematical model for such flows. Expected benefits include improved volcanic ash dispersal modelling and improved understanding of climate-critical oceanic and atmospheric flows.