Gravity Current Driven Smoke Dispersion In a Stratified Ambient

2019年，由重力流传播的丛林大火产生的烟雾导致堪培拉的商业、教育和活动关闭。众所周知，这种烟雾在全国范围内都存在。最近的科学研究表明，烟雾在这些三维重力流中的传播速度和浓度对其初始构型有长期的“记忆”。在这个项目中，将使用高保真的计算和实验技术来阐明重力流卷吸和传播的基本机制。这些知识将为改进烟雾输送的业务预报奠定坚实的基础，使政府机构能够更好地应对这些复杂流动的负面影响。

Smoke from bushfires transported by gravity currents, and known to occur nationwide, caused the shutdown of businesses, education and events in Canberra in 2019. Recent scientific investigations have shown that the speed of propagation and concentration of smoke in these three-dimensional gravity currents have a long term ‘memory’ of their initial configuration. In this project, high-fidelity computational and experimental techniques will be used to elucidate the fundamental mechanisms of gravity current entrainment and propagation. This knowledge will set a strong foundation to improve operational forecasts of smoke transport that will allow government agencies to better respond to the negative impact of these complicated flows.