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HYDRUS 2D/3D for Windows

HYDRUS is a software package for simulating water, heat, and solute movement in two- and three-dimensional variably saturated media. The software package consists of a computational computer program and an interactive graphics-based user interface. A brief description of HYDRUS is given in the Introduction and Program Description. More detailed information is given in the User and Technical Manuals.

New version HYDRUS 2.05 has been released with the Slope Cube add-on module.
Please notice: Almost 50% of the World's top 100 universities 2014 use HYDRUS for research or teaching purposes.

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Introduction

Dear HYDRUS users,

Welcome to the website for the HYDRUS software package. Version 1.0 was a successor of the widely used and successful Hydrus-2D / Meshgen-2D software package, originally developed and released by the U.S. Salinity Laboratory in cooperation with the International Groundwater Modeling Center (IGWMC), the University of California Riverside, and PC-Progress, Inc. This version had a completely new graphical environment for both two- and three-dimensional applications, and provided users with much more comfort than the original Hydrus-2D software package. The software was released under the name HYDRUS (2D/3D), with different versions (called Levels) covering both the two- and three-dimensional applications.

Version 2.0, released in early May of 2011, is the first major upgrade of HYDRUS since 2006. In this version, we are expanding the four editions (Levels) which were available in version 1.x of HYDRUS, namely 2D-Lite, 2D-Standard, 3D-Lite, and 3D-Standard, with a new additional Level 3D-Professional. The 3D-Professinal Level will enable you to define transport domains of virtually arbitrary 3D shapes. Another major improvement that should significantly improve the effectiveness of working with HYDRUS is an option to specify various domain properties, and initial and boundary conditions, on Geometric Objects, rather than on FE-Mesh. We have also implemented two new solute transport modules (UNSATCHEM and Wetland) for evaluating the transport of major ions and for simulating processes in natural or constructed wetlands. There are also many other additional improvements and expansions of the model. Version 2.02, released in September 2012, offers three additional add-on modules: DualPerm for simulating two-dimensional variably-saturated water movement and solute transport in dual-permeability porous media, i.e., preferential and nonequilibrium water flow and solute transport, C-Ride for simulating two-dimensional colloid-facilitated solute transport, and HP2, which couples Hydrus (its two-dimensional part) with the PHREEQC geochemical code [Parkhurst and Appelo, 1999] to create this new comprehensive simulation tool (HP2 - acronym for HYDRUS-PHREEQC-2D), corresponding to a similar one-dimensional module HP1. Version 2.03, released in September 2013, uses new fonts improving the look of HYDRUS GUI on Chinese, Japanese and other similar Windows systems. This version also brings a number of new functions.

HYDRUS provides users with a great deal of flexibility, as it allows them to acquire only the segment of the software that is most appropriate for their particular application. Table 1 contains a description and pricing of the five available HYDRUS Levels. Users can select software limited to two-dimensional problems, or for both two- and three-dimensional applications, and can also opt for relatively simple or more complex geometries. Users can upgrade to higher Levels, as well as from earlier versions of HYDRUS 2D/3D (i.e., version 1.x) to newer versions. Multiple user licenses for up to 20 PCs are double the price of a single license.

You can download a Demo Version of the entire HYDRUS software from our web site and obtain a license (authorization codes) directly from us, or from other distributors. You can also freely download the Technical Manual, which contains detailed mathematical descriptions of problems that can be addressed with HYDRUS, numerical solutions of the governing equations, descriptions of the computational modules, and many example applications for verification purposes. The User Manual is also free to download, and provides descriptions of the main components of the graphical user interface, as well as many software related details (such as the main dialog windows, commands, and menus). The demo version is installed with selected examples that are described in the Technical manual. Additional examples (for Version 1 and Version 2) can be downloaded as well and copied into HYDRUS workspaces as is described in the User Manual. Note that we will continue to further expand the library of these downloadable projects.

This web site offers many other tools that may be helpful especially for beginning HYDRUS users. We continue to provide the Frequently Asked Questions (FAQ) and Discussion Forums where users can obtain answers to most of the more common questions as well as be able to share their experience, pose questions, and seek guidance for specific applications. We will continue to actively support these tools. You can also view simple demos (for Version 1 and Version 2) that illustrate the use of the new HYDRUS software, accompanied with brief explanations of particular commands and actions. Additionally, we provide a list of references so that potential HYDRUS users can see additional examples, in which HYDRUS has been applied in the past, and existing users can find help with their own applications.

To further improve the software, we welcome your feedback about HYDRUS, including any problems and errors that may still be present in this version.

Best regards,
HYDRUS developers

Reasons for using HYDRUS models:

Developed by leading (award winning) scientists in the field of vadose zone hydrology (Rien van Genuchten and Jirka Simunek). Always at the cutting edge of the most recent developments in vadose zone hydrology.
Considered to be a standard tool in both research and industrial applications. Also see the recently released HYDRUS book.
Used by thousands of users around the world (over five thousand of downloads in 2010 alone, and many more before and since then), including leading research institutions, regulatory agencies, and consulting companies.
Hundreds of successful applications (many reported in peer-reviewed journal articles - 1D, 2D, and 3D). Many successful examples of HYDRUS verifications and validations.
Hundreds of resolved problems in the HYDRUS public library of projects (1D, 2D, and 3D).
Easy to use and learn how to use (see the many free 1D and 2D, and 3D tutorials, and short courses organized around the world).
Hundreds of registered users in HYDRUS discussion forums allowing you to share your experience and learn from others.
Linked to other widely used programs in their respective fields of applications (MODFLOW, PHREEQC, Wetland Module, and Rosetta).
And many other reasons ...

HYDRUS Video-Tutorials

Main References:

Šimůnek, J., M. Šejna, and M. Th. van Genuchten, New Features of the Version 3 of the HYDRUS (2D/3D) Computer Software Package, Journal of Hydrology and Hydromechanics, 66(2), 133-142, doi: 10.1515/johh-2017-0050, 2018.
Šimůnek, J., M. Th. van Genuchten, and M. Šejna, Recent developments and applications of the HYDRUS computer software packages, Vadose Zone Journal, 15(7), pp. 25, doi: 10.2136/vzj2016.04.0033, 2016. (Hot paper according to Web of Knowledge (ISI))
Šimůnek, J., D. Jacques, G. Langergraber, S. A. Bradford, miroslav-sejna M. Šejna, and M. Th. van Genuchten, Numerical modeling of contaminant transport with HYDRUS and its specialized modules, Invited paper for the Special Issue "Water Management in Changing Environment", Editor M. S. Mohan Kumar, Journal of the Indian Institute of Science, 93(2) 265-284, ISSN: 0970-4140 Coden-JIISAD, 2013.
Šimůnek, J., M. Th. van Genuchten, and M. Šejna, HYDRUS: Model use, calibration and validation, Special issue on Standard/Engineering Procedures for Model Calibration and Validation, Transactions of the ASABE, 55(4), 1261-1274, 2012.
Šimůnek, J., M. Th. van Genuchten, and M. Šejna, Development and applications of the HYDRUS and STANMOD software packages, and related codes, Vadose Zone Journal, doi:10.2136/VZJ2007.0077, Special Issue ”Vadose Zone Modeling”, 7(2), 587-600, 2008. Download PDF (2MB). (Highly cited paper according to Web of Knowledge (ISI))
Šimůnek, J. and M. Th. van Genuchten, Modeling nonequilibrium flow and transport with HYDRUS, Vadose Zone Journal, doi:10.2136/VZJ2007.0074, Special Issue ”Vadose Zone Modeling”, 7(2), 782-797, 2008. Download PDF (2MB).
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.Download PDF (2MB).

Manuals:

Šimůnek, J., D. Jacques, M. Šejna, and M. Th. van Genuchten, The HP2 Program for HYDRUS (2D/3D): A Coupled Code for Simulating Two-Dimensional Variably-Saturated Water Flow, Heat Transport, and Biogeochemistry in Porous Media, Version 1.0, PC Progress, Prague, Czech Republic, 78 pp., 2012. (pdf 2.0MB)
Šimůnek, J., M. Šejna, and M. Th. van Genuchten, The C-Ride Module for HYDRUS (2D/3D) Simulating Two-Dimensional Colloid-Facilitated Solute Transport in Variably-Saturated Porous Media, Version 1.0, PC Progress, Prague, Czech Republic, 45 pp., 2012. (pdf 0.75MB)
Šimůnek, J., M. Šejna, and M. Th. van Genuchten, The UNSATCHEM Module for HYDRUS (2D/3D) Simulating Two-Dimensional Movement of and Reactions Between Major Ions in Soils, Version 1.0, PC Progress, Prague, Czech Republic, 54 pp., 2012. (pdf 1.1MB)
Šimůnek, J., M. Šejna, and M. Th. van Genuchten, The DualPerm Module for HYDRUS (2D/3D) Simulating Two-Dimensional Water Movement and Solute Transport in Dual-Permeability Porous Media, Version 1.0, PC Progress, Prague, Czech Republic, 32 pp., 2012. (pdf 0.6MB)
Šimůnek, J., M. Th. van Genuchten, and M. Šejna, The HYDRUS Software Package for Simulating Two- and Three-Dimensional Movement of Water, Heat, and Multiple Solutes in Variably-Saturated Media, Technical Manual, Version 2.0, PC Progress, Prague, Czech Republic, pp. 258, 2011. (PDF 3.6MB)
Šejna, M., J. Šimůnek, and M. Th. van Genuchten, The HYDRUS Software Package for Simulating Two- and Three-Dimensional Movement of Water, Heat, and Multiple Solutes in Variably-Saturated Media, User Manual, Version 2.0, PC Progress, Prague, Czech Republic, pp. 280, 2011. (PDF 7.4MB)
Langergraber, G., and J. Šimůnek, The HYDRUS Wetlands Module, Version 2, HYDRUS Software Series 4, Department of Environmental Sciences, University of California Riverside, Riverside, CA, 56 pp., 2011. (PDF 1.4MB)
Langergraber, G., and J. Šimůnek, The Multi-component Reactive Transport Module CW2D for Constructed Wetlands for the HYDRUS Software Package, Manual – Version 1.0, HYDRUS Software Series 2, Department of Environmental Sciences, University of California Riverside, Riverside, CA, 72 pp., 2006.
Šimůnek, J., M. Šejna, and M. Th. van Genuchten, The HYDRUS Software Package for Simulating Two- and Three-Dimensional Movement of Water, Heat, and Multiple Solutes in Variably-Saturated Media, User Manual, Version 1.0, PC Progress, Prague, Czech Republic, pp. 161, 2006.
Šimůnek, J., M. Th. van Genuchten, and M. Šejna, The HYDRUS Software Package for Simulating Two- and Three-Dimensional Movement of Water, Heat, and Multiple Solutes in Variably-Saturated Media, Technical Manual, Version 1.0, PC Progress, Prague, Czech Republic, pp. 241, 2006.