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Modeling Channel Bed Transients Using Explicit F‐D Schemes
Publisher: American Society of Civil Engineers
Abstract: Nonlinearities of bed transients of finite height are documented through numerical modeling using finite difference schemes. First, the numerical characteristics of two explicit finite difference schemes, namely: de Vries's ...
Local Scour Downstream of Box‐Culvert Outlets
Publisher: American Society of Civil Engineers
Abstract: This laboratory study investigates the local scouring phenomenon in sand that occurs downstream of box culverts. Although culvert hydraulics can include special cases, such as culverts on hydraulically steep slopes for ...
Closure to “<i>Local Scour Downstream of Box‐Culvert Outlets</i>” by H. Abida and R. D. Townsend (May/June, 1991, Vol. 117, No. 3)
Publisher: American Society of Civil Engineers
3D Flow and Sediment Dynamics in a Laboratory Channel Bend with and without Stream Barbs
Publisher: American Society of Civil Engineers
Abstract: A series of laboratory flume experiments were performed to study the effect of stream barbs on flow field dynamics and sediment erosion in a 135° mobile-bed channel bend. Stream barbs (also known as spur dikes or submerged ...
Turbulence and Vorticity in a Laboratory Channel Bend at Equilibrium Clear-Water Scour with and without Stream Barbs
Publisher: American Society of Civil Engineers
Abstract: Laboratory flume experiments were conducted to study the flow field and sediment dynamics in a mobile-bed channel bend with and without the presence of stream barbs (upstream-angled submerged groynes). This paper presents ...
3D Numerical Modeling of Flow and Sediment Transport in Laboratory Channel Bends
Publisher: American Society of Civil Engineers
Abstract: The development of a fully three-dimensional finite volume morphodynamic model, for simulating fluid and sediment transport in curved open channels with rigid walls, is described. For flow field simulation, the Reynolds-averaged ...
Evaluation of ADCP Apparent Bed Load Velocity in a Large Sand-Bed River: Moving versus Stationary Boat Conditions
Publisher: American Society of Civil Engineers
Abstract: Detailed mapping of bathymetry and apparent bed load velocity using a boat-mounted acoustic Doppler current profiler (ADCP) was carried out along a 388-m section of the lower Missouri River near Columbia, Missouri. Sampling ...