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Soil Water Balance Simulation of Rice using HYDRUS-2D and Mass Balance Model
Published in Balram Panigrahi, Megh R. Goyal, Modeling Methods and Practices in Soil and Water Engineering, 2017
Laxmi Narayan Sethi, Sudhindra Nath Panda
HYDRUS-2D [29] is a Microsoft Windows based modeling environment for simulating two-dimensional water, heat, and solute dynamics and root water uptake in variably saturated porous media. Assuming a homogeneous and isotropic soil, the flow equation (i.e., two-dimensional Richards’ equation) in HYDRUS-2D model is solved numerically using a Galerkin-type linear finite element scheme. The soil hydraulic properties were modeled using the van Genuchten-Mualem (VGM) model constitutive relationships. The VGM model was also opted to optimize the shape parameters such as (a and n), residual water content and saturated water content with the observed data through inverse estimation process of the HYDRUS-2D model. The software includes a mesh generator and graphical user interface. The details of simulation for water balance parameter estimation are given in subsequent sections.
Evaluating The Use of “Goodness-of-Fit” Measures in a Water Movement Model
Published in Ajai Singh, Wastewater Reuse and Watershed Management, 2019
HYDRUS–2D (Simunek et al., 1999) is a well-known Windows-based computer software package used for simulating water, heat, and/or solute movement in two-dimensional, variably saturated porous media. This model’s ability to simulate water movement for DI conditions has been assessed by many researchers (Simunek et al., 2008). Cote et al. (2003) used the HYDRUS–2D model to simulate soil water transport under SDI. They discussed that soil water and soil profile characteristics were often not adequately incorporated in the design and management of drip systems. Results obtained from simulation studies indicated that in highly permeable coarse-textured soils, water moved quickly downwards from the dripper.
Measuring stiffness of soils in situ
Published in Fusao Oka, Akira Murakami, Ryosuke Uzuoka, Sayuri Kimoto, Computer Methods and Recent Advances in Geomechanics, 2014
Fusao Oka, Akira Murakami, Ryosuke Uzuoka, Sayuri Kimoto
Hydrus is an analytical code that is used for numerical analysis of water flow and solute transport in soils (Rassam, D et al., 2004). Hydrus solves Richards equation to reproduce water behavior in unsaturated soils. Chr∂hp∂t
Experimental and numerical analysis to assess the substrate hydraulic properties and the retention capacity of a green wall module
Published in Urban Water Journal, 2023
Michele Turco, Stefania Anna Palermo, Mario Maiolo, Behrouz Pirouz, Patrizia Piro
Thus, the HYDRUS software package (Šimůnek, Van Genuchten, and Šejna 2016) is one of the most widely used software to simulate water flow and solute/heat transport in two-dimensional vertical or horizontal planes, in asymmetrical three-dimensional domains, or in fully three-dimensional variably saturated domains. Recently, the HYDRUS models have been used in the literature for the description of the hydraulic behaviour of NBS such as green roofs and permeable pavements with optimal results (Hilten, Lawrence, and Tollner 2008; Palla, Gnecco, and Lanza 2009; Qin et al. 2016; Turco et al. 2017; Yang et al. 2015). However, despite the satisfactory results of the cited studies, the development and use of these numerical tools for the description of other NBS systems, such us Green Wall (GW), is still under-parametrised and under-explored.
Computational modeling of wastewater land application treatment systems to determine strategies to improve carbon and nitrogen removal
Published in Journal of Environmental Science and Health, Part A, 2019
Younsuk Dong, Steven I. Safferman, A. Pouyan Nejadhashemi
HYDRUS CW2D is a computational model that simulates water flow and solute flow within a soil. The model takes into account aerobic and anoxic transformation and degradation processes of organic matter, nitrogen, and phosphorus. HYDRUS CW2D was selected for this study because it has the proven ability to predict the fate of nitrate and dosing frequency.[17,44,45] Nitrate is especially an issue in wastewater land application and is a focus of this research. Further, several researchers demonstrated the successful use of HYDRUS to observe the impact of wastewater soil application on the growth of heterotrophic bacteria, fate of fecal coliform, and moisture content.[17,45,46]
Estimating soil hydraulic properties using mini disk infiltrometer
Published in ISH Journal of Hydraulic Engineering, 2019
Aparimita Priyadarshini Naik, Biplab Ghosh, Sreeja Pekkat
The main objective of this study is to analyze the infiltration characteristics obtained for different soil textures in order to understand the variation in their hydraulic properties by carrying out both experimental and numerical studies. MDI has been used to conduct the field experiments for determining the infiltration characteristics of the soils at different locations of the study area. Simultaneously, numerical modeling is performed using HYDRUS 2D/3D software for validating and interpreting the experimental results. The infiltration process simulated by HYDRUS for better understanding of the soil parameters has been widely used as a reference solution because of its accessibility and reliability (Zhang et al. 2016; Wang et al. 2017).