Size distributions of suspended particles in open channel flow over bed materials

Autor:	D. C. Dalal, Bijoy S. Mazumder, R. N. Ray
Rok vydání:	2005
Předmět:	Statistics and Probability Turbulence Ecological Modeling Flow (psychology) Sediment Mechanics Open-channel flow Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Settling Flow velocity Suspended load Suspension (vehicle) Geology
Zdroj:	Environmetrics. 16:149-165
ISSN:	1099-095X 1180-4009
Popis:	Controlled experiments have shown that the grain-size distribution of suspended sediments is related to bed material, flow velocity and height of suspension above the sand bed in an open channel flow. A theoretical model has been developed for computation of suspended grain-size distribution on the basis of continuity equations of sediment and water, using the computed bed-layer concentration as a reference. The proposed model includes the effect of suspension concentration into the mean velocity, turbulent and viscous shear stresses owing to the dynamic coupling between the flow and sediments in suspension. The effect of hindered settling due to the increased concentration in suspension is also taken into account. The model is considered to be a more general one than the existing models, and the results of the present model compare well with the experimental data. Copyright © 2004 John Wiley & Sons, Ltd.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3fb746ec1d793876a65d2f309d45ba42 https://doi.org/10.1002/env.690 Zobrazit plný text záznamu Plný text