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Author(s): J. M. P. Q. Delgado
Title: Concentration distribution in the wake of a sphere buried in a granular bed through which fluid flows
Issue Date: 2008
Abstract: The concentration distribution in the wake of a soluble sphere immersed in a granular bed of inert particles, through which fluid flows with "uniform velocity", has been obtained numerically, for solute transport by both advection and diffusion/dispersion. Fluid flow in the granular bed around the sphere was assumed to follow Darcy's law and, at each point, dispersion of solute was considered in both the cross-stream and streamwise directions. The elliptic PDE equation, resulting from a differential material balance on the solute, was solved numerically over a wide range of values of the relevant parameters (Peclet number and Schmidt number). The solution gives the concentration contour plots and, for each concentration level, the width and downstream length of the corresponding contour surface were determined. General expressions are presented to predict contaminant "plume" size downstream of the polluting source.
Subject: Engenharia química, Outras ciências da engenharia e tecnologias
Chemical engineering, Other engineering and technologies
Scientific areas: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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