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vol. 3, nr. 3 (2004)
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Calculation of the hydraulic conductivity coefficient with the van Genuchten-Mualem method taking into accountthe pF curve parameters
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Małgorzata Iwanek, Dariusz Kowalski, Wanenty Olszta
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Department of Water Supply and Sewage Disposal, Technical University of Lublin, ul. Nadbystrzycka 4, 020-618 Lublin |
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vol. 3 (2004), nr. 3,
pp. 487-500
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abstract:
The van Genuchten-Mualem method for the determination of the hydraulic conductivity coefficient is based on the water retention curve, pF, approximated by a 3�parameter function. These parameters allow to calculate the coefficient through the full range of soil moisture. The aim of the study was to estimate the influence of precision in the determination of these parameters on the calculation accuracy in comparison with empirical measured values. The values are presented for 4 hydrogenic soil monoliths � Mt I aa, ab, bb, bc. The analysis of the results obtained allowed the authors to indicate that estimation inaccuracy of two of the examined pF function parameters influenced the obtained values of hydraulic conductivity coefficient very substantially.
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keywords:
hydraulic conductivity coefficient, retention curve, hydrogenic soil
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original in:
Polish
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