Role of pore–scale heterogeneity on reactive flows in porous materials: validity of the continuum representation of reactive transport

Qinjun Kang, Peter Lichtner & Peter Lichtner
Understanding multi-component reactive transport in porous media is critical to a wide range of fields. It poses great challenges to theoretical, experimental, as well as numerical studies, because it usually involves multiple processes (advection, diffusion, reaction) and multiple scales (molecular, pore, laboratory, field). Current modeling approaches commonly employ a continuum description and rely on volume averages. Because in porous media, averages are taken over length scales much larger than typical grain sizes, spatial heterogeneity at...
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