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VLEACH
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| Category | Contaminant transport (1D) |
| Publisher | Dynamac Corp |
| Platform | DOS |
| Status | Public domain |
| Description | VLEACH is a relatively simple 1D finite difference model. The code can simulate leaching through the vadose zone of a volatile, sorbed, non-reactive contaminant that displays linear partitioning behavior. In particular, it simulates downward liquid-phase advection, solid-phase sorption, gas diffusion in the vapor phase, and three-phase equilibrium. The contaminant mass within each model cell is partioned among liquid (dissolved in water), vapor, and solid phases. Contaminant may be present in the soil as initial condition, or introduced at the top boundary as a concentration for recharge. Gas diffusion may take place at the top and bottom boundaries. Liquid mass flux across the bottom boundary is calculated. The model assumes a homogeneous porous medium with steady flow and no dispersion. There is no in-situ degradation or production, and free product is not present. It can simultaneously simulate downward leaching in a number of polygons with different soil properties. |
| Cost | US Dollars 90 |
| Data formats supported | None stated |
| Supplier in United States of America | International Ground Water Modeling Center |
| Supplier in United States of America | Scientific Software Group |
| Supplier in United States of America | US Environmental Protection Agency |
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