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Proceedings Paper

Simulation of contaminant flow in a laboratory-scale porous system
Author(s): Mehdi Rashidi
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Paper Abstract

The microscopic movement of contaminants in a porous medium has been simulated in an experiment. The approach has been to study the microscale transport processes using a novel nonintrusive fluorescence imaging technique developed in our laboratories. The system studied consists of a packed porous column with a refractive index-matched fluid seeded with fluorescent tracer particles (for flow measurements) or an organic dye (for contaminant concentration measurements). Microscopic measurements of contaminant concentration, contaminant velocity, and pore geometry were obtained in a full three-dimensional volume of the test section at a good accuracy and a high resolution. Three dimensional plots of these measurements show the complex geometry of the porous medium. It is also seen that near the contaminant front there is a significant correlation between the flow and the contaminant concentration. The goal is to use these and future results toward better understanding of contaminant flow and transport through natural porous media.

Paper Details

Date Published: 9 October 1995
PDF: 9 pages
Proc. SPIE 2504, Environmental Monitoring and Hazardous Waste Site Remediation, (9 October 1995); doi: 10.1117/12.224137
Show Author Affiliations
Mehdi Rashidi, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 2504:
Environmental Monitoring and Hazardous Waste Site Remediation
Tuan Vo-Dinh, Editor(s)

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