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KMID : 1024520020110121321
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Journal of the Environmental Sciences
2002 Volume.11 No. 12 p.1321 ~ p.1326
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Behavior of Gaseous Volatile Organic Compounds Considered by Density-Dependent Gas Advection
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Lee Chang-Soo
Lee Yeong-Hwa
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Abstract
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A numerical model is investigated to predict a behavior of the gaseous volatile organic compounds and a subsurface contamination caused by them in the unsaturated zone. Two dimensional advective-dispersion equation caused by a density difference and two dimensional diffusion equation are computed by a finite difference method in the numerical model. A laboratory experiment is also carried out to compare the results of the numerical model. The dimensions of the experimental plume are 1.2m in length, 0.5m in height, and 0.05m in thickness. In comparing the result of 2 methods used in the numerical model with the one of the experiment respectively, the one of the advective-dispersion equation shows better than the one the diffusion equation.
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KEYWORD
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Numerical model, Gaseous volatile organic compounds, Subsurface contamination, Unsaturated zone, Two dimensional advective-dispersion equation, Laboratory experiment, Two dimensional diffusion equation
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