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- W2076372215 abstract "Modelling one-dimensional flow process in unsaturated soils is usually based on the numerical solutions of the Richards’s equation. Richards’s equation may be expressed in water content form, pressure or mixed form. The objective of this paper is to test the accuracy of the results and the ability of the different forms of Richards’s equation to describe the water flow in unsaturated soils. Implicit finite difference scheme is used in the numerical solution of the water content form and the pressure form of Richards’s equation. The solution of the mixed form is obtained using the 1-D Hydrus software. The effect of texture and the initial moisture of the soil on the equation solutions are explored. The results show a significant difference under some conditions. The choice of the empirical model to describe the hydraulic properties like retention curve and hydraulic conductivity may play an important role on the performance of each form, and can lead to remarkably different simulation results. The accuracy of the results is established by comparing numerical results to the semi-analytical solution of Philip and confronting them to the measured results." @default.
- W2076372215 created "2016-06-24" @default.
- W2076372215 creator A5072131275 @default.
- W2076372215 creator A5087294270 @default.
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- W2076372215 date "2014-06-30" @default.
- W2076372215 modified "2023-10-12" @default.
- W2076372215 title "Numerical simulation of water flow in unsaturated soils: comparative study of different forms of Richards’s equation" @default.
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- W2076372215 doi "https://doi.org/10.1080/19648189.2014.926294" @default.
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