期刊
ENVIRONMENTAL MODELLING & SOFTWARE
卷 153, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2022.105412
关键词
Flow-like landslide; Granular flow; Discrete element method; Depth-averaged model; Coupled model; GPU
类别
资金
- WeACT project - UK Natural Environment Research Council (NERC) [NE/S005919/1]
- NERC [NE/S005919/1] Funding Source: UKRI
A new coupled model combining discrete element method and depth-averaged model was developed to simulate flow-like landslides. Experimental and simulation results confirm the model's ability to accurately reproduce the dynamic process of real-world flow-like landslides.
Flow-like landslides are a common type of natural hazards that may impose a great risk to people and their properties. Different models have been reported for simulating flow-like landslides, all of which possess limitations due to the underlying assumptions and simplifications. Harnessing the advantages of two types of prevailing modelling approaches, a new coupled model is developed which adopts a discrete element method (DEM) model to simulate the complex collapsing process in the source area and a depth-averaged model (DAM) to predict the predominantly convective movement in the runout and deposition zones. The coupled model is finally implemented on the NVIDIA CUDA programming platform to achieve GPU high-performance computing. Two laboratory tests are considered to validate the model and a field-scale landslide event is simulated to verify its applicability in real-world conditions. Satisfactory results confirm that the coupled model is able to reproduce the dynamic process of real-world flow-like landslides.
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