Efficient Simulation Tools (EST) for Sediment-Laden Shallow Flows
| Autor: | Sergio Martínez-Aranda, Pilar García-Navarro |
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| Rok vydání: | 2022 |
| Zdroj: | Modeling of Sediment Transport ISBN: 9781803558677 Modeling of Sediment Transport |
| Popis: | Rapid flows of water-sediment mixtures are probably the most challenging and unknown geophysical gravity-driven processes. The fluidized material in motion consists of a mixture of water and multiple solid phases with different specific characteristics. Modeling sediment transport involves an increasing complexity due to the variable bulk properties in the sediment-water mixture, the coupling of physical processes, and the presence of multiple layer phenomena. Two-dimensional shallow-type mathematical models are built in the context of free surface flows and are applicable to most of these geophysical surface processes. Their numerical solution in the finite volume framework is governed by the dynamical properties of the equations, the coupling between flow variables and the computational grid. The complexity of the numerical resolution of these highly unsteady flows and the computational cost of simulation tools increase considerably with the refinement of the non-structured spatial discretization, so that the computational effort required is one of the biggest challenges for the application of depth-averaged 2D models to large-scale long-term flows. Throughout this chapter, the combination of 2D mathematical models, robust numerical methods, and efficient computing kernels is addressed to develop Efficient Simulation Tools (EST’s) for environmental surface processes involving sediment transport with realistic temporal and spatial scales. |
| Databáze: | OpenAIRE |
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