The HPx software for multicomponent reactive transport during variably-saturated flow: Recent developments and applications

摘要: Author(s): Jacques, Diederik; Simunek, Jiri; Mallants, Dirk; van Genuchten, Martinus Th | Abstract: AbstractHPx is a multicomponent reactive transport model which uses HYDRUS as the flow and solver PHREEQC-3 biogeochemical solver. Some recent adaptations have significantly increased flexibility of software for different environmental engineering applications. This paper gives an overview most significant changes HPx, such coupling properties to geochemical state variables, gas diffusion, in two three dimensions. OpenMP allows parallel computing using shared memory. Enhancements scripting may eventually simplify input definitions create possibilities defining templates generic (sub)problems. We included discussion root solute uptake colloid-affected show that or all comprehensive features can be extended with information. Finally, example used demonstrate how similar models, helpful implementing factors relevant soil organic matter dynamics soils. HPx offers unique framework couple spatial-temporal variations water contents, temperatures, fluxes, dissolved CO2transport, well bioturbation processes.