Abstract
The diffusion wave equation is more commonly referred to as the advection dispersion equation. This chapter looks at how the advection dispersion equation with decay can be used to look at chemical and heat transport in porous media. The concepts of total and kinematic porosity are explained. A range of relevant transport processes are introduced including adsorption, microbial degradation, radioactive decay, molecular diffusion, hydrodynamic dispersion and heat conduction. It is explained how these processes can be incorporated into analytical solutions previously developed in Chap. 8. Simplified analytical solutions are also derived for when diffusion, dispersion and conduction can be ignored. Indicative parameter values for each of these processes are provided for a wide range of different scenarios. A selection of relevant practical applications are presented through a problem sheet with worked solutions.
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Mathias, S.A. (2023). Chemical and Heat Transport. In: Hydraulics, Hydrology and Environmental Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-41973-7_9
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DOI: https://doi.org/10.1007/978-3-031-41973-7_9
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