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Hydraulic Jumps in Sediment‐Driven Bottom Currents
Publisher: American Society of Civil Engineers
Abstract: Laboratory experiments were conducted to observe the behavior of turbidity currents in the vicinity of a slope transition. Both sediment‐laden and saline hydraulic jumps were produced. The vertical structure of the currents ...
Depositional Turbidity Currents Laden with Poorly Sorted Sediment
Publisher: American Society of Civil Engineers
Abstract: A layer‐averaged model for steady, spatially developing turbidity currents laden with poorly sorted sediment is presented together with laboratory experiments conducted to test several assumptions involved in the model ...
Discussion of “Note on the Analysis of Plunging of Density Flows” by Gary Parker and Horacio Toniolo
Publisher: American Society of Civil Engineers
Energy Dissipative Plunging Flows
Publisher: American Society of Civil Engineers
Abstract: The analysis of plunging flows using energy dissipation hypothesis is presented in this paper. The classic two-control-volume theory has recently been found questionable and needs to be corrected. In this study, we avoid ...
Computational Fluid Dynamics Modeling for the Design of Large Primary Settling Tanks
Publisher: American Society of Civil Engineers
Abstract: Settling tanks are used to remove solids at wastewater treatment plants. Many numerical models have been proposed to simulate the settling process and to improve tank efficiency. In this research, a three-dimensional (3D) ...
Wall Similarity in Turbulent Open-Channel Flow
Publisher: American Society of Civil Engineers
Abstract: The present work demonstrates that the assumption of wall similarity in the equilibrium region of open channels leads to the definition of a constant, universal value for the normalized vertical flux of turbulent kinetic ...
Meandering Instability of a Vertical Plume
Publisher: American Society of Civil Engineers
Abstract: The meandering instability of a two-dimensional vertical plume is considered in this paper. The base flow profile is derived using boundary layer approximation and similarity hypothesis, in the spirit of Blasius boundary ...
Pollution of Gravel Spawning Grounds by Deposition of Suspended Sediment
Publisher: American Society of Civil Engineers
Abstract: Observations have shown that accumulation of fine sediment in the pores of spawning open-work gravel have a detrimental effect on stream biota. The rate of deposition is intimately linked to the concentration of suspended ...
Three-Dimensional Numerical Model with Free Water Surface and Mesh Deformation for Local Sediment Scour
Publisher: American Society of Civil Engineers
Abstract: A numerical model for local sediment scour with free surface and automatic mesh deformation is constructed and numerical results are compared with experimental results. For the turbulence closure, the two equation
A Perturbation Solution for Bingham-Plastic Mudflows
Publisher: American Society of Civil Engineers
Abstract: An analytical solution is proposed for laminar mudflows and debris flows that can be modeled by a Bingham-plastic law. Two-dimensional, unsteady, nonuniform, Bingham flows released from a point source or a source of finite ...