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RISFlow and Turbulence Structure past a Cluster of Freshwater Mussels
Publisher: American Society of Civil Engineers
Abstract: Freshwater mussels are bivalve mollusks that inhabit the substrates of rivers. Their conservation is important to maintain a healthy river ecological system. The present study uses state-of-the-art experimental and numerical ...
Validation of a Large-Eddy Simulation Model to Simulate Flow in Pump Intakes of Realistic Geometry
Publisher: American Society of Civil Engineers
Abstract: This paper describes efforts toward developing a reliable numerical model to predict pump intake flow and associated vortices. Numerical prediction of these flows characterized by the formation of unsteady (meandering) ...
Coherent Structures in the Flow Field around a Circular Cylinder with Scour Hole
Publisher: American Society of Civil Engineers
Abstract: Large-eddy simulation (LES) and laboratory-flume visualizations were used to investigate coherent structures present in the flow field around a circular cylinder located in a scour hole. The bathymetry corresponds to ...
Closure to “Coherent Structures in the Flow Field around a Circular Cylinder with Scour Hole” by G. Kirkil, S. G. Constantinescu, and R. Ettema
Publisher: American Society of Civil Engineers
Detached Eddy Simulation Investigation of Turbulence at a Circular Pier with Scour Hole
Publisher: American Society of Civil Engineers
Abstract: This paper uses results from detached eddy simulation to reveal the dynamics of large-scale coherent eddies in the flow around a circular pier with an equilibrium scour hole. This is important for the sediment transport ...
3D Calculations of Equilibrium Conditions in Loose-Bed Open Channels with Significant Suspended Sediment Load
Publisher: American Society of Civil Engineers
Abstract: The flow, sediment transport, and bathymetry at equilibrium conditions in loose-bed open channels are predicted using a fully three-dimensional (3D) Reynolds-Averaged Navier-Stokes model that was validated for cases in ...
Investigation of Two Elemental Error Sources in Boat-Mounted Acoustic Doppler Current Profiler Measurements by Large Eddy Simulations
Publisher: American Society of Civil Engineers
Abstract: Measurements of water discharge and flow velocities in riverine and tidal environments are commonly made with acoustic Doppler current profilers (ADCPs) mounted on a moving boat. This paper presents results of high-resolution ...
Experimental Validation of Numerical Model of Flow in Pump-Intake Bays
Publisher: American Society of Civil Engineers
Abstract: Experiments were conducted in a laboratory model to validate a numerical model developed to simulate the three-dimensional turbulent flow in a water-pump-intake bay. The laboratory model was designed to reproduce the ...
Large-Eddy Simulation of Reacting Turbulent Flows in Complex Geometries
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Large-eddy simulation (LES) has traditionally been restricted to fairly simple geometries. This paper discusses LES of reacting flows in geometries as complex as commercial gas turbine engine ...
Effects of Vegetation on Turbulence, Sediment Transport, and Stream Morphology
Publisher: American Society of Civil Engineers
Abstract: Vegetation as multiple stems in various configurations or an isolated stem profoundly alters turbulent flows. Past research has shown that these alterations influence sediment transport and stream morphology, but entail ...