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An algorithm for the soil characteristic curve with the method of conjugate directions

Author(s): C. Tzimopoulos, M. Sakellariou Makrantonaki, A. Spiridis & G. Arampatzis Abstract: A special algorithm is developed to optimize the function of van Genuchten, which is used for the simulation of the soil characteristic curve. This function is non-linear so the method of conjugate directions is used. A start point and a gradient are chosen and the next point is found by the optimum step size procedure (O.S.S.P.). The selected directions for the solution are found using the property of conjugate gradients and each direction is a function of the present and the last gradient. 1 Introduction The unsaturated state of the soil is described by the soil water content 9 (crnVcm^) and the pore water pressure (suction) W (cm). The... Pages: 8 Size: 514 kb Paper DOI: 10.2495/CMWR980291

Download the Full Article Price: US$ 0.00 This article is part of the WIT OpenView scheme and you can download the full text Adobe PDF article for FREE by clicking the 'Openview' icon below. Send this page to a colleague. This paper can be found in the following book Computer Methods in Water Resources XII Vol 1 Buy Book from Witpress.com

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Download the Full Article This article is part of the WIT OpenView scheme and you can download the full text Adobe PDF article for FREE by clicking the 'Openview' icon to the right.