Thematic Issue on HYDRUS Software Applications to Subsurface Fluid Flow and Contaminant Transport

Šimůnek, Jiřı́; Genuchten, Martinus Th. van; Kodešová, Radka

doi:10.1515/johh-2017-0060

Cited by 9 publications

(7 citation statements)

References 23 publications

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“…The second, third, and fourth HYDRUS workshops or conferences were organized in Prague, Czech Republic (in 2008), in Tokyo, Japan (in 2008), and again in Prague (in 2013), respectively. A large number of HYDRUS applications presented at these conferences have been published in the conference proceedings (Šimůnek and Kodešová, 2008; Saito et al, 2008; and Šimůnek et al, 2013b), which can be downloaded freely from the HYDRUS website (http://www.pc-progress.com/en/Default.aspx).…”

Section: Hydrus Books and Proceedingsmentioning

confidence: 99%

Recent Developments and Applications of the HYDRUS Computer Software Packages

Šimůnek

Genuchten

Šejna³

2016

Vadose Zone Journal

Self Cite

746

336

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The HYDRUS-1D and HYDRUS (2D/3D) computer software packages are widely used finite-element models for simulating the one-and two-or three-dimensional movement of water, heat, and multiple solutes in variably saturated media, respectively. In 2008, Šimůnek et al. (2008b) described the entire history of the development of the various HYDRUS programs and related models and tools such as STANMOD, RETC, ROSETTA, UNSODA, UNSATCHEM, HP1, and others. The objective of this manuscript is to review selected capabilities of HYDRUS that have been implemented since 2008. Our review is not limited to listing additional processes that were implemented in the standard computational modules, but also describes many new standard and nonstandard specialized add-on modules that significantly expanded the capabilities of the two software packages. We also review additional capabilities that have been incorporated into the graphical user interface (GUI) that supports the use of HYDRUS (2D/3D). Another objective of this manuscript is to review selected applications of the HYDRUS models such as evaluation of various irrigation schemes, evaluation of the effects of plant water uptake on groundwater recharge, assessing the transport of particle-like substances in the subsurface, and using the models in conjunction with various geophysical methods.Abbreviations: CRS, cosmic-ray sensing; EC, electrical conductivity; ERT, electrical resistivity tomography; FEM, finite element mesh; GPR, ground-penetrating radar; GUI, graphical user interface; TDT, time-domain transmissometry.The HYDRUS-1D and HYDRUS (2D/3D) software packages (Šimůnek et al., 2008b) are finite-element models for simulating the one-and two-or three-dimensional movement of water, heat, and multiple solutes in variably saturated media, respectively. The standard versions, as well as various specialized add-on modules, of the HYDRUS programs numerically solve the Richards equation for saturated-unsaturated water flow and convection-dispersion type equations for heat and solute transport. The flow equation incorporates a sink term to account for water uptake by plant roots as a function of water and salinity stress. Both compensated and uncompensated water uptake by roots can be considered. The heat transport equation considers movement by both conduction and convection with flowing water. The governing convection-dispersion solute transport equations are written in a relatively general form by including provisions for nonlinear, nonequilibrium reactions between the solid and liquid phases and linear equilibrium reactions between the liquid and gaseous phases. The transport models also account for convection and dispersion in the liquid phase as well as diffusion in the gas phase, thus permitting the models to simulate solute transport simultaneously in both the liquid and gaseous phases. Hence, both adsorbed and volatile solutes, such as pesticides and fumigants, can be considered.The solute transport equations further incorporate the effects of zero-order production, first-o...

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Section: Hydrus Books and Proceedingsmentioning

confidence: 99%

Recent Developments and Applications of the HYDRUS Computer Software Packages

Šimůnek

Genuchten

Šejna³

2016

Vadose Zone Journal

Self Cite

746

336

View full text Add to dashboard Cite

show abstract

“…The implementation of the hydrology module involves the coupling of three models that simulate the movement of water through the soil and plant and into the atmosphere. O pen S im R oot includes a simplified C++ implementation of the SWMS model which is used to simulate soil water transport in H ydrus (Diamantopoulos et al ., 2013) and R swms (Šimunek et al ., 1995). Water transport through the xylem is simulated using a hydraulic network model (Alm et al ., 1992; Doussan et al ., 1998), and evapotranspiration is simulated using the Penman–Monteith equation (Penman, 1948; Monteith, 1964).…”

Section: Methodsmentioning

confidence: 99%

OpenSimRoot: widening the scope and application of root architectural models

et al. 2017

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Summary OpenSimRoot is an open‐source, functional–structural plant model and mathematical description of root growth and function. We describe OpenSimRoot and its functionality to broaden the benefits of root modeling to the plant science community.OpenSimRoot is an extended version of simroot, established to simulate root system architecture, nutrient acquisition and plant growth. OpenSimRoot has a plugin, modular infrastructure, coupling single plant and crop stands to soil nutrient and water transport models. It estimates the value of root traits for water and nutrient acquisition in environments and plant species.The flexible OpenSimRoot design allows upscaling from root anatomy to plant community to estimate the following: resource costs of developmental and anatomical traits; trait synergisms; and (interspecies) root competition. OpenSimRoot can model three‐dimensional images from magnetic resonance imaging (MRI) and X‐ray computed tomography (CT) of roots in soil. New modules include: soil water‐dependent water uptake and xylem flow; tiller formation; evapotranspiration; simultaneous simulation of mobile solutes; mesh refinement; and root growth plasticity.OpenSimRoot integrates plant phenotypic data with environmental metadata to support experimental designs and to gain a mechanistic understanding at system scales.

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“…We used numerical model WASH_2D, which solves governing equations for two-dimensional movement of water, solute and heat in soils, similar to HYDRUS-2D, using finite difference method to handle vertically layered soils with overland runoff. Although, Simunek et al [15] recently presented a new feature of HYDRUS (2D/3D) model, which allows transient standing water formed as well as furrow or wetland, still, it cannot handle overland flow caused by runoff processes. Therefore, we modified WASH_2D model and included an overland flow component that resembles the experimental conditions presented in this research and field conditions containing runoff routing.…”

Section: Modelling Of Water Infiltration In the Presence Of Sand Ditchesmentioning

confidence: 99%

Enhancing Water Infiltration through Heavy Soils with Sand-Ditch Technique

Abu‐Zreig

Fujimaki

Elbasit

2020

Water

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Enhancing rainwater infiltration into heavy soils is an important strategy in arid regions to increase soil water storage and meet crop water demand. In such soils, water infiltration and deep percolation can be enhanced by constructing deep ditches filled with permeable materials, such as sand. Laboratory experiments were conducted to examine the effect of sand ditch installed across the slope of a soil box, 50 × 20 × 20 cm3, on runoff interception and water infiltration of clay soil packed at two bulk densities, 1240 and 1510 kg/m3. The experiments were carried out under laboratory conditions using simulated steady flow of about 20 cm/h for a duration of 60 min. Results showed that sand ditches highly reduced runoff and largely enhanced water infiltration into soils. In low-density soil, the average runoff was 15% of inflow volume but reduced to zero in the presence of sand ditches thus increasing soil water storage by 15%. In high-density soil, the presence of sand ditches was more effective; infiltration volume increased by 156% compared to control. The WASH_2D model was used to simulate water flow in the presence of sand ditches; it showed to increase water infiltration and soil-moisture storage thus improving crop production in drylands.

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Thematic Issue on HYDRUS Software Applications to Subsurface Fluid Flow and Contaminant Transport

Cited by 9 publications

References 23 publications

Recent Developments and Applications of the HYDRUS Computer Software Packages

Recent Developments and Applications of the HYDRUS Computer Software Packages

OpenSimRoot: widening the scope and application of root architectural models

Enhancing Water Infiltration through Heavy Soils with Sand-Ditch Technique

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