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A two-dimensional layer-averaged numerical model for turbidity currents
Yang SH(杨世豪)1,2; An Y(安翼)1; Liu QQ3
发表期刊Geological Society, London, Special Publications
2018
卷号477页码:32
摘要

Turbidity currents occur widely in submarine environments, but field-scale numerical simulations of the flow features have not been applied extensively. Here, we present a two-dimensional layer-averaged numerical model to simulate turbidity currents over an erodible sediment bed, and taking into consideration deposition, entrainment and friction. The numerical model was developed based on the open-source code, Basilisk, ensuring well-balanced and positivity-preserving properties. An adaptive spatial discretization was used, which allows multi-level refinement. The adaptive criterion is based on the dynamic features of the flow and sediment concentrations. The numerical scheme has a relatively high computational efficiency compared with models based on the Cartesian mesh. A hypothetical case based on a true large-scale landform (the Moroccan Turbidite System, offshore NW Africa) was studied. Compared with previous models, the current model accounted for the coupling between flow, sediment transportation and bed evolution. This approach may improve simulation results and also allow the simulation of complex field-scale landforms, while preserving the flow details.

DOI10.1144/SP477.32
语种英语
课题组名称LMFS水环境流体力学(LEM)
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77529
专题流固耦合系统力学重点实验室
作者单位1.Institute of Mechanics, Chinese Academy of Sciences
2.School of Engineering Science, University of the Chinese Academy of Science
3.Beijing Institute of Technology
推荐引用方式
GB/T 7714
Yang SH,An Y,Liu QQ. A two-dimensional layer-averaged numerical model for turbidity currents[J]. Geological Society, London, Special Publications,2018,477:32.
APA Yang SH,An Y,&Liu QQ.(2018).A two-dimensional layer-averaged numerical model for turbidity currents.Geological Society, London, Special Publications,477,32.
MLA Yang SH,et al."A two-dimensional layer-averaged numerical model for turbidity currents".Geological Society, London, Special Publications 477(2018):32.
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