Hydrus-1D Projects - HP1
- Project Group: HP1
- Description: Examples demonstrating the HP1 program (coupled Hydrus-1D and PHREEQC [Parkhurst and Appelo, 1999])
- Availability: These projects are included in Hydrus-1D installation
HP1 has been tested for accuracy using examples having different levels of complexity. The problems below were solved with HP1 for verifying the numerical correctness of the coupling procedure: (i) transport problems of single or multiple components, subject to sequential first-order decay, have been compared with simulations carried out using the standard HYDRUS-1D, (ii) multicomponent transport problems for steady-state flow have been compared with simulations carried out using PHREEQC, and (iii) several more complicated problems have been compared with simulations carried out using the CRUNCH model. The CRUNCH model is a result of further development of the GIMRT/OS3D codes of Steefel and Yabusaki (1996, see http://www.csteefel.com).
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Project
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Description
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Transport of a single component or decay chain
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EQCL
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Physical equilibrium transport of chloride (verification problem 1)
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NEQCL
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Physical non-equilibrium transport of chloride (verification problem 1)
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TRANSCL
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Transient physical nonequilibrium transport of chloride (verification problem 2) - Uniform Flow with MIM
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STADS
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Steady-state transport of nonlinearly adsorbed contaminant (verification problem 3)
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STDECAY
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Steady-state transport of nonlinearly adsorbed contaminant with first-order decay (verification problem 4)
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SEASONCHAIN
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First-order decay series of nonlinearly adsorbed contaminants during unsteady flow conditions (verification problem 5)
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Multicomponent transport
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CATEXCH
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Transport with multiple cation exchange (verification problem 6)
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MINDIS
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Transport with mineral dissolution
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MCATEXCH
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Heavy metal transport in a medium with a pH-dependent cation exchange complex
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Download HP1 test example for Version 5 of HYDRUS (rar).
Additional examples can be found at http://www.sckcen.be/hp1/applications.shtml.
References:
- Parkhurst, D.L., and C.A.J. Appelo, User’s guide to PHREEQC (Version 2) – A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations. Water-Resources Investigations, Report 99-4259, Denver, CO, 1999.
- Jacques, D., and J. Šimůnek, User Manual of the Multicomponent Variably-Saturated Flow and Transport Model HP1, Description, Verification and Examples, Version 1.0, SCK•CEN-BLG-998, Waste and Disposal, SCK•CEN, Mol, Belgium, 79 pp., 2005.
- Jacques, D., J. Šimůnek, D. Mallants, and M. Th. van Genuchten, Operator-splitting errors in coupled reactive transport codes for transient variably saturated flow and contaminant transport in layered soil profiles, J. Contam. Hydrology, 88, 197-218, 2006.
- Šimůnek, J., D. Jacques, M. Th. van Genuchten, and D. Mallants, Multicomponent geochemical transport modeling using the HYDRUS computer software packages, J. Am. Water Resour. Assoc., 42(6), 1537-1547, 2006.
- Jacques, D., J. Šimůnek, D. Mallants, and M. Th. van Genuchten, Modeling coupled hydrological and chemical processes: Long-term uranium transport following mineral phosphorus fertilization, Vadose Zone Journal, doi:10.2136/VZJ2007.0084, Special Issue “Vadose Zone Modeling”, 7(2), 698-711, 2008.
- Jacques, D., J. Šimůnek, D. Mallants and M. Th. van Genuchten, Modelling coupled water flow, solute transport and geochemical reactions affection heavy metal migration in a Podzol soil, Geoderma, doi:10.1016/j.geoderma.2008.01.009, 145, 449-461, 2008.
- Jacques, D., and J. Šimůnek, Notes on HP1 – a software package for simulating variably-saturated water flow, heat transport, solute transport and biogeochemistry in porous media, HP1 Version 2.2, SCK•CEN-BLG-1068, Waste and Disposal, SCK•CEN, Mol, Belgium, 113 pp., 2010.
- Jacques, D., C. Smith, J. Šimůnek, and D. Smiles, Inverse optimization of hydraulic, solute transport, and cation exchange parameters using HP1 and UCODE to simulate cation exchange, J. Contaminant Hydrology, 142-143, 109-125, 2012.