Category: Contaminant Transport Modeling
Posts
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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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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…
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POLLUTEv10 Example 16: Monte Carlo Simulation of Leachate Collection System Failure Timing
Introduction POLLUTEv10 Example 16 introduces probabilistic modeling into landfill contaminant transport analysis using Monte Carlo simulation. Building on Example 15, this case evaluates how uncertainty in the timing of primary leachate collection system (LCS) failure affects contaminant migration. Rather than assuming a single failure time, this example models a range of possible failure scenarios, providing…
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POLLUTEv10 Example 17: Modeling a Landfill with Composite Liners and Dual Leachate Collection Systems
Introduction POLLUTEv10 Example 17 demonstrates how to model a landfill incorporating a composite primary liner, primary and secondary leachate collection systems, and a compacted clay secondary liner. This example introduces a more engineered and realistic landfill design, reflecting modern containment practices. A key feature is the use of the Giroud et al. (1992) leakage method,…
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POLLUTEv10 Example 18: Modeling Phase Change in a Secondary Leachate Collection System
Introduction POLLUTEv10 Example 18 demonstrates the application of the Phase Change special feature to simulate contaminant transport within a landfill system that includes a secondary leachate collection system (SLCS). This example is particularly valuable for environmental engineers and hydrogeologists interested in modeling multi-phase contaminant behavior across unsaturated and saturated zones. The scenario focuses on the…