The fluid dynamics of expanding lava deltas

熔岩三角洲扩张的流体动力学

• 批准号: NE/X007197/1
• 负责人: Andrew Hogg
• 金额: $ 1.3万
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FX007197%2F1
• 关键词: fluid; dynamics; expanding; lava; deltas

EPSRC : Jesse Taylor-West : EP/R513179/1When lava enters the ocean, the molten rock spreads out and solidifies, creating a new shelf of land known as a lava delta. There have been a number of significant examples of such events over the last few years, notably at Kilauea, Hawaii in 2018, and Cumbre Vieja, La Palma in 2021. The physics of these events are complex, with changes to the driving buoyancy force due to the higher density of the ambient water relative to air, and rheological changes occurring due to the rapid cooling of the molten material. We will formulate continuum models to capture the dominant physical processes and these models will be analysed and integrated numerically to yield predictions that can be compared with observations.

EPSRC：杰西·泰勒-韦斯特：EP/R513179/1当熔岩进入海洋时，熔岩扩散并凝固，形成一个新的陆地架，称为熔岩三角洲。过去几年发生了许多此类事件的重要例子，特别是 2018 年在夏威夷基拉韦厄发生的事件和 2021 年在拉帕尔马岛 Cumbre Vieja 发生的事件。这些事件的物理原理很复杂，由于环境水相对于空气的密度较高而导致驱动浮力发生变化，并且由于熔融材料的快速冷却而发生流变变化。我们将制定连续介质模型来捕获主要的物理过程，并对这些模型进行数值分析和积分，以产生可与观测结果进行比较的预测。