Packed beds structure-based approach

Some geometric transport models are based on solid characteristics rather than on properties of the pore space itself. By assuming a particular packing arrangement it is possible to infer the pore space geometry from information on the size and shape of the solid particles (Coelho et al., 1997). While this approach may be applicable to sieved and repacked soil columns, it is often inappropriate for undisturbed samples, with pore characteristics that depend more on soil structure than on soil texture. Thus, models to predict solute dispersion from the properties of particles in packed beds (e.g., Aris Amundson, 1957 Koch Brady, 1985 Ras-muson, 1985) are not the main focus of this review. 

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