Submarine landslide tsunamis, mechanisms of granular flows at multiple scales; a new UK/China multidisciplinary research collaboration

海底滑坡海啸、多尺度颗粒流机制；

• 批准号: NE/W004593/1
• 负责人: David Tappin
• 金额: $ 5.82万
• 依托单位: British Geological Survey
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FW004593%2F1
• 关键词: Submarine; landslide; tsunamis; mechanisms; granular

Over the past 20 years tsunamis from submarine landslides, such as slumps and blocks, have become better understood from international collaborations between geologists and numerical modelers. Tsunamis from large volume translational submarine landslides such as Storegga and Grand Banks are less well understood because their complex internal deformations, on failing, are challenging to model and understand in the context of tsunami generation. The objective of this proposal, therefore, is to bring together geologists with expertise in submarine landslide tsunamis and numerical modelers who research subaerial granular sediment flows in a new marine context through an international collaboration which will lead to a better understanding of the physics of submarine translational sediment movement in the generation of tsunamis. These submarine landslide tsunamis are a hazard to both the UK (e.g. the North Sea) and China (in the South China Sea). To address their complex mechanisms the project aims to establish new partnerships between UK researchers from the British Geological Survey and the University of Edinburgh and Chinese researchers from Tongji University. Our vision is to radically improve model predictability and applicability through fusing critical mechanisms at the particle, continuum and field scales, enabled by transdisciplinary collaborations.

在过去的20年里，通过地质学家和数值模拟人员之间的国际合作，人们对海底滑坡（如滑坡和块体）引发的海啸有了更好的了解。海啸从大体积平移海底滑坡，如Storegga和大银行不太好理解，因为他们的复杂的内部变形，失败，是具有挑战性的建模和理解的海啸生成的背景下。因此，本提案的目的是通过国际合作，将具有海底滑坡海啸专门知识的地质学家和研究新海洋环境中陆上颗粒沉积物流动的数值模拟人员聚集在一起，从而更好地了解海啸产生过程中海底平移沉积物运动的物理学。这些海底滑坡海啸对英国（例如北海）和中国（南中国海）都是一种危险。为了解决其复杂的机制，该项目旨在英国地质调查局和爱丁堡大学的英国研究人员与同济大学的中国研究人员之间建立新的伙伴关系。我们的愿景是从根本上提高模型的可预测性和适用性，通过融合关键机制在粒子，连续和场的规模，使跨学科的合作。

项目成果

A granular energy-controlled boundary condition for discrete element simulations of granular flows on erodible surfaces

• DOI: 10.1016/j.compgeo.2022.105115
• 发表时间: 2023-02
• 期刊: Computers and Geotechnics
• 影响因子: 5.3
• 作者: Chongqiang Zhu;Yu Huang;Jin Sun

Well-posedness and ill-posedness of single-phase models for suspensions

悬架单相模型的适定性和不适定性

• DOI: 10.1017/jfm.2022.1004
• 发表时间: 2023
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: Barker T

Exact solutions for steady granular flow in vertical chutes and pipes

垂直溜槽和管道中稳定颗粒流的​​精确解决方案

• DOI: 10.1017/jfm.2021.909
• 发表时间: 2021-11-11
• 期刊: JOURNAL OF FLUID MECHANICS
• 影响因子: 3.7
• 作者: Barker, T.;Zhu, C.;Sun, J.
• 通讯作者: Sun, J.