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Godunov-Based Model for Nonhydrostatic Wave Dynamics
Publisher: American Society of Civil Engineers
Abstract: A new numerical model based on the incompressible, nonhydrostatic Navier-Stokes equations for free surface flow is developed. The equations are transformed vertically to the
Numerical Simulation of Surf Zone Dynamics
Publisher: American Society of Civil Engineers
Abstract: A numerical model that solves the unsteady, incompressible, Navier-Stokes equations has been utilized to simulate monochromatic, spilling and plunging waves over a sloping bed. The volume of fluid technique is used to track ...
Nonhydrostatic Model for Surf Zone Simulation
Publisher: American Society of Civil Engineers
Abstract: A previously developed model for nonhydrostatic free surface flow is adapted to simulate breaking waves in the surf zone. The model solves the Reynolds-averaged Navier-Stokes equations in a fraction step manner with the ...
Finite-Volume Model for Shallow-Water Flooding of Arbitrary Topography
Publisher: American Society of Civil Engineers
Abstract: A model based on the finite-volume method is developed for unsteady, two-dimensional, shallow-water flow over arbitrary topography with moving lateral boundaries caused by flooding or recession. The model uses Roe’s ...
Network Implementation of the Two-Component Pressure Approach for Transient Flow in Storm Sewers
Publisher: American Society of Civil Engineers
Abstract: The two-component pressure approach (TPA) is an alternative to the Preissman slot method (PSM) for modeling highly transient sewer flow, including transitions between free-surface and pressurized conditions. TPA and PSM ...
Nonhydrostatic Model for Surface Irrigation
Publisher: American Society of Civil Engineers
Abstract: A nonhydrostatic model for overland flow is developed for the purpose of providing the framework for predicting the fate and transport of chemicals under surface irrigation. The technique is based on the turbulent Navier-Stokes ...
Finite Volume Model for Nonlevel Basin Irrigation
Publisher: American Society of Civil Engineers
Abstract: A finite volume model for unsteady, two-dimensional, shallow water flow is developed and applied to simulate the advance and infiltration of an irrigation wave in two-dimensional basins of complex topography. The fluxes ...
Hydrodynamics of Turbid Underflows. I: Formulation and Numerical Analysis
Publisher: American Society of Civil Engineers
Abstract: A mathematical model is developed for unsteady, two-dimensional, single-layer, depth-averaged turbid underflows driven by nonuniform, noncohesive sediment. The numerical solution is obtained by a high-resolution, total ...
Hydrodynamics of Turbid Underflows. II: Aggradation, Avulsion, and Channelization
Publisher: American Society of Civil Engineers
Abstract: A two-dimensional, depth-averaged finite-volume model is used to study the hydrodynamics of turbid underflows. A sensitivity analysis is performed with regard to model input parameters and the initial bed properties. ...
Impact of Limiters on Accuracy of High-Resolution Flow and Transport Models
Publisher: American Society of Civil Engineers
Abstract: High-resolution finite volume schemes used to predict mass transport and free surface flows utilize limiters such as Minmod, Double Minmod, and Superbee to prevent spurious oscillations commonly associated with second-order ...
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