...F ig . 3. Main window of the HYDRUS (2D/3D) software package. Input and output data are accessible using the data tree of the navigation bar on the left. The computational domain with its finite element discretization, various domain properties, initial and boundary conditions, and results...

...Jiří Šimůnek; Martinus Th. van Genuchten; Miroslav Šejna Abstract 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...

..., using the single-porosity flow model in HYDRUS 2D/3D, were used to describe the matrix domain, the parameters characterizing the macropore domain and mass exchange between domains were estimated using the Guelph permeameter infiltration and the dual-permeability flow model in HYDRUS 2D/3D. The mass...

... and HYDRUS 2D/3D simulation models. The field study was performed at the Smědava Mountain in the Jizera Mountains in the Czech Republic. Simulations were performed for one selected soil (Haplic Podzol) on a relatively steep hillside. The simulation results for the 1D and 2D scenarios showed...

...Frank Spurlock; Bruce Johnson; Atac Tuli; Suduan Gao; Jing Tao; Fabio Sartori; Ruijun Qin; David Sullivan; Mike Stanghellini; Husein Ajwa Abstract We evaluated the ability of the HYDRUS 2D/3D model to simulate chloropicrin (CP) and 1,3-dichloropropene (13D) fate, transport, and volatilization...

... the sensitivity of HYDRUS-1D- and HYDRUS 2D/3D-simulated fumigant cumulative flux, maximum 6-h period mean flux density, and soil gas concentrations to 15 model input variables using Monte Carlo Latin hypercube analysis. The input variables included fumigant physicochemical properties, agricultural film (tarp...

... the observations to a two-dimensional, axisymmetric, numerical solution of the system using the HYDRUS 2D/3D software, and to a semianalytical solution to estimate soil hydraulic properties. We found satisfactory comparisons among the observations and the numerical and semianalytical solutions of the system, which...

... dynamics of two-dimensional soil moisture and deep drainage across a canopy–intercanopy transect using a calibrated HYDRUS 2D/3D model; (iii) to investigate the effects of different model inputs of rainfall and root distributions on water flux estimations; and (iv) to investigate how to appropriately...

...Fig. 1. Typical geometries and finite element meshes for the flow domains used in the HYDRUS-2D/3D salt leaching simulations. ...

...) in the unsaturated zone is a process significantly affecting groundwater recharge. For conditions where these processes need to be considered, fully three-dimensional models, such as VSF ( Thoms et al., 2006 ) or HYDRUS (2D/3D) ( Šimůnek et al., 2006 ), should be used. The HYDRUS package, which obviously can...

... Laboratory, the University of California, Riverside, and PC-Progress over the past 20 yr. These tools include numerical models for one- or multidimensional variably saturated flow and transport [e.g., HYDRUS-1D, HYDRUS-2D, and HYDRUS (2D/3D)], analytical models for solute transport in soils and groundwater...

... properties of the sandy soil. Using the HYDRUS (2D/3D) software, El-Nesr et al. (2014) showed theoretically that installation of a physical barrier can significantly change both the wetting pattern and spatial distribution of applied solutes for subsurface drip irrigation. However, the capillary physical...

... based on soil water status . Irrig. Sci. 31 : 27 – 36 . doi:10.1007/s00271-011-0289-x Deb S. Shukla M. Šimůnek J. Mexal J. . 2013 . Evaluation of spatial and temporal root water uptake patterns of a flood-irrigated pecan tree using the HYDRUS (2D/3D) model . J. Irrig. Drain...

..., the HYDRUS (2D/3D) model ( Simunek et al., 2018 ). This permitted a numeric reproduction of the field infiltration tests. A realistic soil profile consisting of a wet zone, transition zone, wetting front, and dry zone can be generated for any given time. The EM simulation open-source software gprMax...

..., was instrumented for this study. Three storm events were modeled using the two-dimensional variably saturated numerical model HYDRUS-2D. A good fit was achieved between modeled and observed data for the timing and magnitude of water table rise for all three storms. Mound height was most sensitive to the thickness...

... were used in the analysis. The estimated parameters were then used in the HYDRUS-3D model to simulate a 2-mo-long period. Precipitation, irrigation, evaporation, and root water uptake processes were included in the numerical analysis. The values of 0.74 and 0.8 of the Nash–Sutcliffe efficiency index...

... and an understanding of their hydraulic and treatment capabilities is necessary. HYDRUS (2D and 3D) has also been used to model fate and transport of septic tank effluent (STE) contaminants in OWTSs. Beggs et al. (2004) modeled the nitrification–denitrification chain reaction to predict the effect of low...