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Communication Dans Un Congrès Année : 2023

Large eddy simulation of dune evolution by wind erosion, sand transport and deposition

Résumé

Sand dune deformation is a dynamic process resulting from complex interactions between the atmospheric boundary layer, aeolian particle transport, sand erosion and dune deformation. This work undertakes these problems by conducting three-dimensional numerical simulations of solid particle transport over a deformable sand dune. A turbulent boundary layer flow is computed by Large-eddy simulation (LES). A complete model has been developed for sand particle transport from saltation initiation to particle-surface interactions. Simulation of a time evolving dune, corresponding to the experiments of Ferreira et al. (2012), is performed. Numerical results match with the experimental ones. A consistent small-scale tool for predicting particle transport and wind erosion of a deforming dune is constructed and validated in this work.
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Dates et versions

hal-04281889 , version 1 (13-11-2023)

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  • HAL Id : hal-04281889 , version 1

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Jian Zhao Wu, Catherine Le Ribault, Serge Simoëns, Ivana Vinkovic. Large eddy simulation of dune evolution by wind erosion, sand transport and deposition. 11 International Conference on Multiphase Flow, Apr 2023, Kobe, Japan. ⟨hal-04281889⟩
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