Author: GAEA Technologies
Posts
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MIGRATEv10 Example 10: Contaminant Transport in Fractured Media with Sorption
Introduction MIGRATEv10 Example 10 introduces a more advanced and realistic scenario by incorporating: This example builds on earlier cases by modeling contaminant migration through a landfill barrier system that includes both compacted clay and a fractured till layer, while accounting for retardation due to sorption. It also serves as the 2-D extension of a similar…
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POLLUTEv10 Example 12: Fractured Media Transport vs Analytical Solution (Tang et al., 1981)
Validating Fracture Transport Modeling with Analytical Benchmarks POLLUTEv10 Example 12 is a benchmark validation case that compares numerical results from POLLUTEv10 with an analytical solution developed by Tang et al.. This example focuses on transport in fractured porous media, where contaminant migration occurs rapidly along fractures and slowly into the surrounding rock matrix. Problem Overview…
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MIGRATEv10 Example 11: Contaminant Migration from Two Adjacent Landfill Cells
Introduction MIGRATEv10 Example 11 expands the modeling complexity by simulating contaminant migration from two adjacent landfill cell sites. This scenario is particularly important for real-world applications where multiple sources may contribute to groundwater contamination. The key objective is to evaluate the combined impact of both landfill cells and determine contaminant concentrations at a down-gradient receptor…
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POLLUTEv10 Example 13: 2D Plane Dispersion vs Analytical Solution (TDAST)
Benchmarking Against Analytical 2D Dispersion Models POLLUTEv10 Example 13 provides another important model validation case, comparing numerical results from POLLUTEv10 with the analytical solution implemented in TDAST, developed by P. Javandel and colleagues in 1984. This example focuses on 2-dimensional plane dispersion in an infinitely deep porous medium, offering insight into plume spreading under uniform…
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MIGRATEv10 Example 12: Modeling Time-Dependent Source Histories for Multiple Landfill Cells
Introduction MIGRATEv10 Example 12 builds on Example 11 by introducing a critical real-world factor: 👉 Different source histories for multiple landfill cells Rather than assuming constant or identical source conditions, this example models how staggered construction, filling, and closure timelines affect contaminant migration. This is a major step toward realistic modeling, where timing is just…
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MIGRATEv10 Example 13: Termination of Primary Leachate Collection System
Introduction MIGRATEv10 Example 13 explores a critical long-term scenario in landfill performance: 👉 What happens when the primary leachate collection system (PLCS) stops operating? This example builds directly on Example 1 by introducing time-dependent changes in hydraulic conditions following landfill closure. It highlights how reduced system performance can significantly impact leakage rates and contaminant migration.…
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POLLUTEv10 Example 14: Modeling a Landfill with Primary and Secondary Leachate Collection Using Passive Sink
Introduction POLLUTEv10 Example 14 demonstrates an advanced application of contaminant transport modeling using the Passive Sink special feature. This scenario simulates a landfill equipped with both primary and secondary leachate collection systems, incorporating layered hydrogeologic conditions and a finite contaminant source. The example is particularly useful for environmental engineers and hydrogeologists seeking to understand how…
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Digitizing Historical Geophysical Well Logs: Methods, Tools, and Best Practices
Introduction Across the energy, environmental, mining, and geothermal sectors, historical geophysical well logs represent one of the most valuable yet underutilized subsurface datasets. For decades, oil and gas companies, government geological surveys, environmental consultancies, and exploration firms generated millions of well logs documenting the physical properties of the subsurface. However, a large portion of these…
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POLLUTEv10 Example 15: Modeling Leachate Collection System Failure Using Variable Properties and Passive Sink
Introduction POLLUTEv10 Example 15 builds directly on Example 14 by introducing a critical real-world scenario: failure of the primary leachate collection system (LCS). This example demonstrates how to simulate time-dependent changes in hydraulic conditions using the Variable Properties feature in combination with the Passive Sink option. The result is a more realistic representation of landfill…