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Stability of the equations for particulate sedimentation
The Physics of Fluids, 1979The solution of the equations for two-phase flow which models the steady sedimentation of a uniform distribution of particles in a liquid has been shown to be unstable to small perturbations. It is shown that when a diffusivity term (a force on the particles which is linear in the gradient of the particle concentration) with sufficiently large ...
Hill, C. D., Bedford, A.
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Stabilization of contaminated canal sediments
European Journal of Environmental and Civil Engineering, 2011ABSTRACT Morocco has valuable assets in marine seaboards and resources. The Mediterranean coasts do more than attracting tourists. That is why it is imperative to reconcile economic development with the quality of the environment. The industrial area in Tangier (Morocco), situated in the south-east area of the city, is a primary source of sediment ...
Laïla Ben Allal +5 more
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Stability of settling of suspended sediments
The Physics of Fluids, 1978The solution to the equations of two-phase flow which describes hindered settling is unstable to small perturbations.
Thacker, W. C., Lavelle, J. W.
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Origin of Stability in Sedimentation
Physical Review Letters, 2002Velocity fluctuations and particle concentrations are studied in a liquid fluidized bed to investigate the origin of steady state sedimentation. Both the velocity fluctuations and the particle concentrations are found to strongly depend on height. A flux balance model shows why the bed is stable: velocity fluctuations drive a downward particle flux ...
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Effects of estuarine infauna on sediment stability and particle sedimentation
Hydrobiologia, 1990Secretions produced by the two estuarine benthic invertebrates Corophium volutator and Nereis diversicolor stabilise sediments by increasing their shear strength, and reduce sedimentation of previously resuspended particles. The secretions consist of 1 to 2 μm threads which bind the particles together. They are used by both species in the production of
P. S. Meadows, J. Tait, S. A. Hussain
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Metal Distribution and Stability in Constructed Wetland Sediment
Journal of Environmental Quality, 2006ABSTRACTThe A‐01 wetland treatment system (WTS) is a surface flow wetland planted with giant bulrush [Schoenoplectus californicus (C.A. Mey.) Palla] that is designed to remove Cu and other metals from the A‐01 National Pollution Discharge Elimination System (NPDES) effluent at the Savannah River Site near Aiken, SC. Copper, Zn, and Pb concentrations in
Anna Sophia, Knox +5 more
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Colloid Stability in Vadose Zone Hanford Sediments
Environmental Science & Technology, 2005We experimentally determined colloid stability of natural colloids extracted from vadose zone sediments from the U.S. Department of Energy's Hanford Reservation. We also used reference minerals, kaolinite, montmorillonite, and silica,for comparative purposes.
Szabolcs, Czigány +2 more
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A model of the effects of sedimentation rate on the stability of Mississippi Delta sediments
Geo-Marine Letters, 1993High sedimentation rates on the subaqueous delta of the Mississippi River create localized sediment instabilities that result in downslope movement through well-defined chutes or gullies. A simplified kinematic wave equation model that neglects second-order effects such as diffusion treats the failure mechanism as a sedimentation and slope ...
C. E. Adams, H. H. Roberts
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Advances on the Sedimentation Stability of Magnetorheological Fluids
2023Magnetorheological fluids (MRFs) have been widely applied to various engineering applications, especially in vibration isolation and shock mitigation systems because of their fast response time and continuously controllable actuating force (or torque) without moving parts.
Norman M. Wereley +4 more
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Evaluating Sediment Stability at Sites with Historic Contamination
Environmental Management, 2002The stability of cohesive sediment deposits during a rare storm is a critical component in the evaluation of remedial options at a contaminated sediment site. Estimating scour depths during a rare storm, and the resulting contaminant concentrations in the surficial layer of the bed, is necessary for comparing the efficacy of various remedial ...
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