![]() Jacques & Šimůnek (2005), and Šimůnek et al. (2006) evaluated the accuracy of the operator-splitting approach for a kinetic reaction network (i.e., sequential and parallel kinetic degradation reactions) by comparing HP1 with an analytical solution for TCE-degradation, as well as for mixed equilibrium and kinetic reactions involving different flow conditions (steady-state and transient). HP1 uses the operator-splitting approach with no iterations during one time step (a non-iterative sequential modeling approach). However, the loosely coupled program can simulate also a broad range of low-temperature biogeochemical reactions in water, the vadose zone and in ground water systems, including interactions with minerals, gases, exchangers and sorption surfaces based on thermodynamic equilibrium, kinetic, or mixed equilibrium-kinetic reactions. ![]() The code still uses the Richards equation for simulating variably-saturated water flow and advection-dispersion type equations for heat and solute transport. ![]() HP1 is a significant expansion of the individual Hydrus-1D and PHREEQC programs by preserving most of their original features. This code contains modules simulating (1) transient water flow, (2) the transport of multiple components, (3) mixed equilibrium/kinetic biogeochemical reactions, and (4) heat transport in one-dimensional variably-saturated porous media (soils). ![]() ![]() In this program, Hydrus-1D is coupled with the PHREEQC geochemical code (Parkhurst & Appelo 1999) to create a new comprehensive simulation tool, HP1 (acronym for HYDRUS1D-PHREEQC) (Jacques and Šimůnek 2005 Jacques et al. HP1 – Coupled Hydrus-1D and PHREEQC model ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |