Information AboutSettling |
| CATEGORIES ABOUT SETTLING | |
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Settling velocity or '''fall velocity''' or '''terminal velocity (ws)''' of a (sediment) particle is the at which the sediment settles in still fluid. It is diagnostic of Grain Size , but is also sensitive to the shape (roundness and sphericity) and density of the grains as well as to the Viscosity and Density of the fluid. It integrates all of these into a key transport parameter. For dilute suspensions, Stokes' Law predicts the settling velocity of small spheres in Fluid , either air or water. Stokes' Law finds many applications in the natural sciences, and is given by: : where ''w'' is the settling velocity, ''ρ'' is density (the subscripts ''p'' and ''f'' indicate particle and fluid respectively), ''g'' is the acceleration due to gravity, ''r'' is the radius of the particle and ''μ'' is the dynamic viscosity of the fluid. Stokes' law applies when the Reynolds Number is less than 0.1. Settleable solids are the particulates that settle out of a still fluid. Settleable solids can be quantified for a Suspension using an Imhoff cone. SEE ALSO EXTERNAL LINKS |
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