Print Email Facebook Twitter Advection-diffusion sediment models in a two-phase flow perspective Title Advection-diffusion sediment models in a two-phase flow perspective Author Keetels, G.H. (TU Delft Offshore and Dredging Engineering) Goeree, J.C. (TU Delft Offshore and Dredging Engineering) van Rhee, C. (TU Delft Offshore and Dredging Engineering) Date 2017 Abstract Sediment profiles in open channels are usually predicted by advection-diffusion models. Most basic forms consider the terminal settling velocity of a single particle in still clear water. Alternative forms account for hindered settling at higher concentrations. It is not known, however, how these modifications relate to mass and momentum conservation of each phase. For dilute flow, it is known that the original form can be derived from a two-phase analysis, assuming a dilute suspension, neglect of inertial effects in the momentum balance and using a linear drag force formulation. Here we study how and if it is possible to understand the hindered-settling modifications for the non-dilute case, and formulate a relation between advection-diffusion models and parameters involved in the turbulent drag force. This note verifies that the transient two-phase flow solutions converge to steady state, and compares the results to experimental data. Subject Fluid–particle interactionsparticle-laden flowssedimentationsuspended sedimentsturbulence-sediment interactions To reference this document use: http://resolver.tudelft.nl/uuid:d96ff257-af23-4415-8123-749e69b22208 DOI https://doi.org/10.1080/00221686.2017.1289262 ISSN 0022-1686 Source Journal of Hydraulic Research, 56 (2018) (1), 136-140 Part of collection Institutional Repository Document type journal article Rights © 2017 G.H. Keetels, J.C. Goeree, C. van Rhee Files PDF Advection_diffusion_sedim ... ective.pdf 760.33 KB Close viewer /islandora/object/uuid:d96ff257-af23-4415-8123-749e69b22208/datastream/OBJ/view