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Open-channel flow. --- Hydraulics. --- Highway engineering.

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This thesis aims to contribute to a better understanding of turbulent open channel flow, sediment erosion and sediment transport. The thesis provides an analysis of high-fidelity data from direct numerical simulation of (i) open channel flow over an array of fixed spheres, (ii) open channel flow with mobile eroding spheres, (iii) open channel flow with sediment transport of many mobile spheres. An immersed boundary method is used to resolve the finite-size particles.

sediment erosion --- CFD --- open channel flow --- sediment transport --- turbulence

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Chapter 3 is an introduction to OpenFOAM, as the most popular CFD tool in effluent discharge modelling. A decade ago, OpenFOAM was only an academic tool for studying complex fluid mechanics problems. However, it has grown quickly in recent years and has found its way into industry as well (e.g., many consulting firms have invested in creating their own solvers for the particular problems they often solve). This book covers the fundamentals of OpenFOAM related to effluent discharge modeling: the choice of available solvers and differences between them, mesh generation options and methodology in OpenFOAM and postprocessing the numerical results.

Sewerage --- Sewage disposal. --- Open-channel flow. --- Pipelines --- Numerical analysis. --- Computer simulation. --- Hydrodynamics.

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Channels (Hydraulic engineering) --- One-dimensional flow --- Unsteady flow (Fluid dynamics) --- Open-channel flow --- Floods --- Computer programs. --- Computer simulation.

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This book presents the theory and computation of open channel flows, using detailed analytical, numerical and experimental results. The fundamental equations of open channel flows are derived by means of a rigorous vertical integration of the RANS equations for turbulent flow. In turn, the hydrostatic pressure hypothesis, which forms the core of many shallow water hydraulic models, is scrutinized by analyzing its underlying assumptions. The book’s main focus is on one-dimensional models, including detailed treatments of unsteady and steady flows. The use of modern shock capturing finite difference and finite volume methods is described in detail, and the quality of solutions is carefully assessed on the basis of analytical and experimental results. The book’s unique features include: • Rigorous derivation of the hydrostatic-based shallow water hydraulic models • Detailed treatment of steady open channel flows, including the computation of transcritical flow profiles • General analysis of gate maneuvers as the solution of a Riemann problem • Presents modern shock capturing finite volume methods for the computation of unsteady free surface flows • Introduces readers to movable bed and sediment transport in shallow water models • Includes numerical solutions of shallow water hydraulic models for non-hydrostatic steady and unsteady free surface flows This book is suitable for both undergraduate and graduate level students, given that the theory and numerical methods are progressively introduced starting with the basics. As supporting material, a collection of source codes written in Visual Basic and inserted as macros in Microsoft Excel® is available. The theory is implemented step-by-step in the codes, and the resulting programs are used throughout the book to produce the respective solutions.

Mathematical physics. --- Geotechnical engineering. --- Engineering geology. --- Engineering—Geology. --- Foundations. --- Hydraulics. --- Computer simulation. --- Mathematical Applications in the Physical Sciences. --- Geotechnical Engineering & Applied Earth Sciences. --- Geoengineering, Foundations, Hydraulics. --- Simulation and Modeling. --- Engineering --- Civil engineering --- Geology, Economic --- Computer modeling --- Computer models --- Modeling, Computer --- Models, Computer --- Simulation, Computer --- Electromechanical analogies --- Mathematical models --- Simulation methods --- Model-integrated computing --- Flow of water --- Water --- Fluid mechanics --- Hydraulic engineering --- Jets --- Architecture --- Building --- Structural engineering --- Underground construction --- Caissons --- Earthwork --- Masonry --- Soil consolidation --- Soil mechanics --- Walls --- Engineering, Geotechnical --- Geotechnics --- Geotechnology --- Engineering geology --- Physical mathematics --- Physics --- Geology --- Flow --- Distribution --- Details --- Mathematics --- Open-channel flow. --- Flow, Free-surface --- Flow, Open-channel --- Free-surface flow --- Fluid dynamics