Experiments and Simulations on Plume Spreading by Engineered Injection and Extraction in Refractive Index Matched Porous Media

Experiments and Simulations on Plume Spreading by Engineered Injection and Extraction in Refractive Index Matched Porous Media

Lauren J. Sather, Eric J. Roth, Roseanna M. Neupauer, John P. Crimaldi, David C. Mays

We started with an idea from chaos theory: Stretching and folding optimizes plume spreading in laminar flows. This idea prompted a series of simulations and experiments (with some novel methods and wall effect mitigation) showing how engineered injection and extraction (EIE) can be used to create hydraulic building blocksHE.1943-5584.0002167) that drive plume spreading beyond the constraints of porous media heterogeneity. Along the way, we derived how injection and extraction triggers mixing at multiple scales and recorded experimental evidence of reversible hydrodynamic dispersion. We conclude that, although it does not always generate chaos, EIE offers a strategy to improve plume-spreading.

Water Resources Research Volume59, Issue2, February 2023, e2022WR032943
Corresponding Author: David Mays

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