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Mostrando ítems 41-50 de 61
Artículo
Two-dimensional sediment transport models in shallow water equations. A second order finite volume approach on unstructured meshes
(Elsevier, 2009)
In this paper, we study the numerical approximation of bedload sediment transport due to shallow layer flows. The hydrodynamical component is modeled by a 2D shallow water system and the morphodynamical component by a solid ...
Artículo
A Multilayer Shallow Water Approach for Polydisperse Sedimentation with Sediment Compressibility and Mixture Viscosity
(Springer, 2020)
A three-dimensional multilayer shallow water approach to study polydisperse sedimentation and sediment transport in a viscous fluid is presented. The fluid is assumed be loaded with finely dispersed solid particles that ...
Artículo
An Entropy-correction free solver for non-homogeneous Shallow Water equations
(Dunod, 2003)
In this work we introduce an accurate solver for the Shallow Water equations with source terms. This scheme does not need any kind of entropy correction to avoid instabilities near critical points. The scheme also solves ...
Artículo
Modelling of surface and inner wall temperatures in the analysis of courtyard thermal performances in Mediterranean climates
(Taylor and Francis, 2021)
Courtyards are an effective passive strategy for improving the energy performance of buildings. However, there is a lack of accurate simulation tools for their thermal performance due to their complex thermodynamics. ...
Artículo
Efficient GPU implementation of a two waves TVD-WAF method for the two-dimensional one layer Shallow Water system on structured meshes.
(Elsevier, 2013)
The numerical solutions of shallow water equations are useful for applications related to geophysical flows that usually take place in large computational domains and could require real time calculation. Therefore, parallel ...
Artículo
Multilayer models for shallow two-phase debris flows with dilatancy effects
(Elsevier, 2020)
We present here a multilayer model for shallow grain-fluid mixtures with dilatancy effects. It can be seen as a generalization of the depth-averaged model presented in Bouchut et al. (2016) [6], that includes dilatancy ...
Artículo
2D granular flows with the μ(I) rheology and side walls friction: A well-balanced multilayer discretization
(Elsevier Inc., 2018-03)
We present here numerical modelling of granular flows with the rheology in confined channels. The contribution is twofold: (i) a model to approximate the Navier–Stokes equations with the rheology through an asymptotic ...
Artículo
Formal deduction of the saint-venant–exner model including arbitrarily sloping sediment beds and associated energy
(Dunod, 2017)
In this work we present a deduction of the Saint-Venant–Exner model through an asymptotic analysis of the Navier–Stokes equations. A multi-scale analysis is performed in order to take into account that the velocity of the ...
Artículo
Coupling superposed 1D and 2D shallow-water models: Source terms in finite volume schemes
(Elsevier, 2010)
We study the superposition of 1D and 2D shallow-water equations with non-flat topographies, in the context of river-flood modeling. Since we superpose both models in the bi-dimensional areas, we focus on the definition of ...
Artículo
Modelling and numerical simulation of submarine sediment shallow flows: transport and avalanches
(Sociedad Española de Matemática Aplicada, 2009)
This work presents two different types of models to study submarine sediment movements and its numerical discretization by finite volume methods. First, bedload sediment transport models are introduced. They are characterized ...