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RISThree-Dimensional Modeling of Sediment Transport in a Narrow 90° Channel Bend
Publisher: American Society of Civil Engineers
Abstract: A three-dimensional numerical model was used for calculating the velocity and bed level changes over time in a 90° bended channel. The numerical model solved the Reynolds-averaged Navier-Stokes equations in three dimensions ...
Effects of Bottom-Up Blockage on Entrance Loss Coefficients and Head-Discharge Relationships for Pipe Culvert Inlets: Comparisons of Theoretical Methods and Experimental Results
Publisher: ASCE
Abstract: Culvert blockage is a recognized problem known to increase the risk of cross-drainage failure. Presently, the effects of bottom-up inlet blockage can be estimated using the theoretically derived energy loss method (ELM) ...
Reynolds Stress Model Study Comparing the Secondary Currents and Turbulent Flow Characteristics in High-Speed Narrow Open Channel and Duct Flows
Publisher: American Society of Civil Engineers
Abstract: This study numerically investigates and compares the secondary currents, velocity dips, turbulence properties, and boundary shear stresses in supercritical narrow open channel flows (OCFs) and in narrow duct flows (DFs) ...
Reynolds-Averaged Navier-Stokes Modeling of Submerged Ogee Weirs
Publisher: American Society of Civil Engineers
Abstract: The present study documents the successful application of a Reynolds-averaged Navier-Stokes model with conventional turbulence closure to calculate discharge coefficients for submerged flow conditions at ogee-type weirs. ...
A Reformed Empirical Equation for the Discharge Coefficient of Free-Flowing Type-A Piano Key Weirs
Publisher: American Society of Civil Engineers
Abstract: The existing equations for the discharge coefficient of Piano key weirs (PKWs) use a limited range of experimental data, which means that they are inappropriate for wide parametric ranges that might lead to significant ...