Bed-load dispersion : A literature review
Lewis, James W.; Sánchez, Alejandro.; Gibson, Stanford A.; Dahl, Travis A.; Floyd, Ian E.
Abstract: This Special Report documents available research pertaining to the dispersion of bed-load sediment transport, specifically the dispersion coefficient. This knowledge can inform the evaluation and improvement of existing U.S. Army Corps of Engineers (USACE) sediment transport models. A discussion is presented on normal and anomalous dispersion. Several aspects of bed-load dispersion are discussed, including whether the assumption of normal dispersion and isotropy are valid. Numerical dispersion coefficients are relative to the context of all considerations within a modeling framework, and affect sediment erosion, deposition, and the resulting water quality. This document is intended for scientists and engineers with a basic understanding of physics and numerical modeling of sediment transport.
Coastal and Hydraulics Laboratory (U.S.)Engineer Research and Development Center (U.S.)
Advection; Bed-load; Bed-load transport; Diffusion; Dispersion; Sediment transport; Sedimentation; Vertical mixing