A Completely Discrete Heterogeneous Multiscale Finite Element Method for Multiscale Richards’ Equation of van Genuchten-Mualem Model [PDF]
Journal of Applied Mathematics, 2014 We propose a fully discrete method for the multiscale Richards’ equation of van Genuchten-Mualem model which describes the flow transport in unsaturated heterogenous porous media.
Haitao Cao, Tao Yu, Xingye Yue
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Revista Brasileira de Engenharia Agrícola e Ambiental, 2005 Com este trabalho, objetiva-se a geração de modelos matemáticos para predição dos 4 parâmetros da equação de van Genuchten (tetaR, tetaS, alfa e n) e para a umidade correspondente à capacidade de campo em função dos atributos areia, argila, matéria ...
Carlos R. de Mello +4 more
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Water Resources Research, 2018 Soil bulk density (ρb) variations influence soil hydraulic properties, such as the water retention curve (WRC), but they are usually ignored in soil water simulation models.
Zhengchao Tian +5 more
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Temperature influence on matric suction in unsaturated soils: experimental insights [PDF]
Scientific ReportsTemperature is a critical factor affecting the matric suction of unsaturated soils. This study employed a simple and time-saving method to investigate the influences of temperature and moisture content on the temperature dependence of matric suction in ...
Feifei Liu +3 more
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Soil Water Characteristic Curves Accounting for Soil Swelling and Shrinking
Guan'gai paishui xuebao, 2023 【Objective】 Heavy-textured soils tend to swell or shrink following rewetting or drying, while most soil water characteristic curves measured from such soils do not consider such effects.
LI Min +3 more
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Simulation of saturated and unsaturated flow in karst systems at catchment scale using a double continuum approach [PDF]
Hydrology and Earth System Sciences, 2012 The objective of this work is the simulation of saturated and unsaturated flow in a karstified aquifer using a double continuum approach. The HydroGeoSphere code (Therrien et al., 2006) is employed to simulate spring discharge with the Richards equations
J. Kordilla +3 more
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Assessment of the interactions between soil–biosphere–atmosphere (ISBA) land surface model soil hydrology, using four closed-form soil water relationships and several lysimeters [PDF]
Hydrology and Earth System Sciences, 2023 Soil water drainage is the main source of groundwater recharge and river flow. It is therefore a key process for water resource management. In this study, we evaluate the soil hydrology and the soil water drainage, simulated by the interactions between ...
A. Sobaga +8 more
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Parameter estimation of soil water retention curve with Rao-1 algorithm
Journal of Agricultural Engineering, 2022 The soil water retention curve (SWRC) has a significant role in determining the unsaturated properties of soil. A stochastic optimization algorithm named Rao-1 algorithm is employed to estimate the parameters of the SWRC model in this paper.
Zhongju Wang, Chao Huang, Long Wang
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Scheduling irrigation using an approach based on the van Genuchten model [PDF]
Agricultural Water Management, 2016 Abstract Crop irrigation which results in high water use efficiencies typically uses science-based irrigation scheduling tools to determine irrigation application timing and quantities. Although a large variety of sensors are available for measuring soil moisture status, there are a few easy-to-use irrigation scheduling tools which provide a yes/no ...
Xi Liang +3 more
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Pedotransfer functions for estimating the van Genuchten model parameters in the Cerrado biome
Revista Brasileira de Engenharia Agrícola e Ambiental, 2023 ABSTRACT The Cerrado biome has presented challenges in reconciling its agricultural expansion with water availability. In this sense, water resources planning and management are fundamental for the economic, social, and environmental development of the Cerrado biome, which has been hampered by the lack of data, especially those referring to irrigation ...
Mariana F. Veloso +4 more
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