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Strongly-Coupled Multigrid Method for 3-D Incompressible Flows Using Near-Wall Turbulence Closures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An efficient artificial compressibility algorithm is developed for solving the three-dimensional Reynolds-averaged Navier-Stokes equations in conjunction with the low-Reynolds number k-ω turbulence ...
Assessment of Artificial Dissipation Models for Three-Dimensional Incompressible Flow Solutions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Various approaches for constructing artificial dissipation terms for three-dimensional artificial compressibility algorithms are presented and evaluated. Two, second-order accurate, central-differencing ...
Role of Artificial Dissipation Scaling and Multigrid Acceleration in Numerical Solutions of the Depth-Averaged Free-Surface Flow Equations
Publisher: American Society of Civil Engineers
Abstract: A numerical model is developed for solving the depth-averaged, open-channel flow equations in generalized curvilinear coordinates. The equations are discretized in space in strong conservation form using a space-centered, ...
Simulation-Based Approach for Stream Restoration Structure Design: Model Development and Validation
Publisher: American Society of Civil Engineers
Abstract: We develop, validate, and demonstrate the potential of Virtual StreamLab (VSL3D), a novel three-dimensional hydromorphodynamics computational model capable of simulating turbulent flow and sediment transport in natural ...
Three-Dimensional Numerical Model of Lateral-Intake Inflows
Publisher: American Society of Civil Engineers
Abstract: A three-dimensional (3D) numerical model for predicting steady, in the mean, turbulent flows through lateral intakes with rough walls is developed, validated, and employed in a parametric study. The method solves the ...
River Training and Ecological Enhancement Potential Using In-Stream Structures
Publisher: American Society of Civil Engineers
Abstract: The use of in-stream flow training structures for channel stabilization has become increasingly popular due to its potential cost effectiveness and ecological benefits. When properly designed and maintained, these structures ...
Numerical Simulation of Transcritical Flow in Open Channels
Publisher: American Society of Civil Engineers
Abstract: The term transcritical flow denotes the existence of both subcritical and supercritical flow regimes in an open-channel system. It is similar to transonic flow in gas dynamics. Transcritical flow is encountered in many ...