Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 334667
Title Porosity-permeability properties generated with a new 2-parameter 3D hydraulic pore-network model for consolidated and unconsolidated porous media
Author(s) Acharya, R.C.; Zee, S.E.A.T.M. van der; Leijnse, A.
Source Advances in Water Resources 27 (2004)7. - ISSN 0309-1708 - p. 707 - 723.
DOI https://doi.org/10.1016/j.advwatres.2004.05.002
Department(s) Sub-department of Soil Quality
Soil Physics, Ecohydrology and Groundwater Management
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2004
Keyword(s) poreus medium - porositeit - permeabiliteit - poriëngrootte - transportprocessen - toepassingen - modellen - bodemporiënsysteem - grondwaterstroming - porous media - porosity - permeability - pore size - transport processes - applications - models - soil pore system - groundwater flow - diffusion-coefficients - residual saturations - transport-properties - mercury porosimetry - capillary-pressure - tomographic-images - size distribution - multiphase flow - packed-beds - prediction
Categories Soil Physics
Abstract A new method is presented to construct a simple and general site bond correlated 3D HYdraulic POre Network model (HYPON) of hydraulic behavior of porous media for a wide range of permeability and porosity. Pore scale microstructure in this model is captured through simple power functions of Beti’s influence lines that fix both the location and the size of throat (the narrowest section of bond) by relating the important elements of microstructure such as coordination number, porebody sizes and pore wall curvature
A new method is presented to construct a simple and general site bond correlated 3D HYdraulic Pore Network model (HYPON) of hydraulic behavior of porous media for a wide range of permeability and porosity. Pore scale microstructure in this model is captured through simple power functions of Beti's influence lines that fix both the location and the size of throat (the narrowest section of bond) by relating the important elements of microstructure such as coordination number, porebody sizes and pore wall curvature. The new element in pore-network architecture is thus, the location of throat, which is important for smooth hydraulic transitions during steady state flow conditions. Despite the reduced number of parameters in comparison with other pore-network models, the morphological characteristics of HYPON compare well to those of the process-based predictive models in literature, and these characteristics are sensitise to the variance of porebody sizes rather than to the used type of the porebody size distributions. Processes such as diagenesis and dissolution are captured implicitly through the pore wall curvature parameter. Different combinations of porosity and permeability relations are obtained if the bond curvature and porebody sizes are varied. These relations reveal that effects of diagenesis and dissolution on the permeability may be ignored as they are secondary to effects on porosity. (C) 2004 Elsevier Ltd. All rights reserved.
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