Two-Dimensional Numerical Simulation of Bed-Load Transport of a Finite-Depth Sediment Layer: Applications to Channel Flushing
| Autor: | Pilar García-Navarro, Asier Lacasta, Mario Morales-Hernández, Daniel Caviedes-Voullième, Carmelo Juez |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
Field (physics) 0208 environmental biotechnology 02 engineering and technology Exner equation 01 natural sciences Finite-depth sediment layer medicine Geotechnical engineering Channel flushing 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering Bed load Computer simulation Mechanical Engineering Shallow water Sediment Mechanics Thin sediment layer Graphics-processing unit (GPU) computing 020801 environmental engineering Waves and shallow water Partially erodible bed Flushing Maximum erodability medicine.symptom Geology Communication channel |
| Zdroj: | Journal of Hydraulic Engineering. 143 |
| ISSN: | 1943-7900 0733-9429 |
| DOI: | 10.1061/(asce)hy.1943-7900.0001337 |
| Popis: | Numerical modeling of bed-load transport in shallow flows, particularly oriented toward environmental flows, is an active field of research. Nevertheless, other possible applications exist. In particular, bed-load transport phenomena are relevant in urban drainage systems, including sewers. However, few applications of coupled two-dimensional (2D) shallow-water and bed-load transport models can be found, and their transfer from environmental applications-usually river and floodplain-into sewer applications requires some adaptation. Unlike to river systems, where there is a thick layer of sediment that constitutes a movable riverbed, sewer systems have thin layers of sediment that need to be removed, thus exposing a rigid, nonerodible surface. This problem requires careful numerical treatment to avoid generating errors and instability in the simulation. This paper deals with a numerical approach to tackle this issue in an efficient way that allows large-scale studies to be performed and provides empirical evidence that the proposed approach is accurate and applicable for sewage and channel-flushing problems. (C) 2017 American Society of Civil Engineers. |
| Databáze: | OpenAIRE |
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