Results 31 to 40 of about 965 (177)

How Soil Freezes and Thaws at a Snow-Dominated Forest Site in the U.S.—A Synthetic Approach Using the Soil and Cold Regions Model (SCRM)

Soil Systems, 2022
The freeze–thaw process controls several hydrologic processes, including infiltration, runoff, and soil erosion. Simulating this process is important, particularly in cold and mountainous regions.
Francisco Balocchi, Ty P. A. Ferré, Thomas Meixner, José Luis Arumí   +3 more
doaj   +1 more source

A Modified van Genuchten-Mualem Model of Hydraulic Conductivity in Korean Residual Soils [PDF]

Water, 2015
According to the Mualem capillary model, hydraulic conductivity (HC) is integrated theoretically from the function related to soil water retention curves (SWRC). On the other hand, based on the smooth type of SWRC, the predicted HC function decreases abruptly near saturation, which often challenges the stability of numerical solutions.
Oh, Seboong, Kim, Yun, Kim, Jun-Woo
openaire   +1 more source

Comparison of different estimation procedures for the hydraulic properties of horticultural substrates by One-Step technique

Journal of Agricultural Engineering, 2013
The improved iterative method for the simultaneous determination of the hydraulic properties of growing media from One-Step experiment by Bibbiani, is performed and compared with simplified equations by Valiantzas and Londra.
Carlo Bibbiani, Carlo A. Campiotti, Luca Incrocci, Alberto Pardossi   +3 more
doaj   +1 more source

Boundary conditions for the problem of moisture transport in concrete [PDF]

E3S Web of Conferences, 2021
When calculating of the moisture transport in concrete of such geotechnical structures as a pile or diaphragm wall, contact with soil is forming the special boundary conditions.
Ter-Martirosyan Zaven, Bakhmisov Viktor
doaj   +1 more source

Pedotransfer Function for the Brunswick Soil Hydraulic Property Model and Comparison to the van Genuchten‐Mualem Model [PDF]

Water Resources Research, 2020
AbstractModeling soil hydraulic properties requires an effective representation of capillary and noncapillary storage and conductivity. This is made possible by using physically comprehensive yet flexible soil hydraulic property models. Such a model (Brunswick [BW] model) was introduced by Weber et al.
Weber, Tobias K. D., Finkel, Michael, da Conceição Gonçalves, Maria, Vereecken, Harry, Diamantopoulos, Efstathios, Finkel, Michael; 2 Center for Applied Geoscience University of Tübingen Tübingen, da Conceição Gonçalves, Maria; 3 SAFSV‐Laboratório de Solos Instituto Nacional de Investigação Agrária e Veterinária Oeiras Portugal, Vereecken, Harry; 4 Agrosphere Institute (IBG‐3) Forschungszentrum Jülich Jülich Germany, Diamantopoulos, Efstathios; 5 Department of Plant and Environmental Science, Section of Environmental Chemistry and Physics University of Copenhagen Copenhagen Denmark   +8 more
openaire   +5 more sources

Spatial variability of parameters of the van Genuchten equation in a Latossolo Vermelho-Amarelo = Variabilidade espacial dos parâmetros da equação de van Genuchten em um Latossolo Vermelho-Amarelo

Agro@mbiente On-line, 2017
The knowledge of the spatial variability of the van Genuchten equation parameters is important for the interpretation of certain indicators of soil physical quality, since some indices derived from the soil water retention curve.
Jaedson Cláudio Anunciato Mota, Paulo Leonel Libardi, Alexsandro Santos Brito, Sergio Oliveira Moraes, Ícaro Vasconcelos Nascimento, Thiago Leite Alencar   +5 more
doaj   +1 more source

Implementation of two-phase flow models for recycled materials in embankments [PDF]

MATEC Web of Conferences, 2021
Recycled materials like Bauxite Residue (Red Mud) and Fly Ash are prevalent in recent feasibility studies on reused materials in geotechnical engineering applications.
Machado João A.R., Vasquez Ambria, Kwan Wing Shun, Fuentes Jose M., Menezes Gustavo   +4 more
doaj   +1 more source

The Estimation of van Genuchten SWCC Model for Unsaturated Sands by means of the Genetic Programming [PDF]

Scientia Iranica, 2017
The van Genuchten Model (1980) is widely-used for the description of the Soil-Water Characteristic Curve (SWCC) of a variety of soils. This study uses the Genetic Programming (GP) for the presentation of equations estimating the van Genuchten (vG) Model fitting parameters for unsaturated clean sand soils. Moreover, this study uses the data derived from
A. Taban, M . Mirmohammad Sadeghi, M.A. Rowshanzamir   +2 more
openaire   +1 more source

Estimating hydraulic conductivity of internal drainage for layered soils in situ [PDF]

Hydrology and Earth System Sciences, 2013
The soil hydraulic conductivity (K function) of three layered soils cultivated at Paradys Experimental Farm, near Bloemfontein (South Africa), was determined from in situ drainage experiments and analytical models.
S. S. W. Mavimbela, L. D. van Rensburg
doaj   +1 more source

Estimation of Soil Hydraulic Parameters Using Inverse Method Based on Specific Liquid-Vapor Interfacial Area Around the Soil Particles [PDF]

علوم و مهندسی آبیاری, 2018
For the simulation of soil water flux, the relationships between the soil hydraulic conductivity, water content and pressure head are required. The relationship between soil water content ( with soil pressure head [h( ] and hydraulic conductivity [K( )] 
zahra MirSafi, Shahrukh Zand Parsa, Mehdi Mahbod   +2 more
doaj   +1 more source