swMATH ID: 6595
Software Authors: Kuráž, Michal; Mayer, Petr; Lepš, Matěj; Trpkošová, Dagmar
Description: An adaptive time discretization of the classical and the dual porosity model of Richards’ equation This paper presents a numerical solution to the equations describing Darcian flow in a variably saturated porous medium-a classical Richards’ equation model and an extension of it that approximates the flow in media with preferential paths-a dual porosity model Gerke and van Genuchten. A numerical solver to this problem, the DRUtES computer program, was developed and released during our investigation. A new technique which maintains an adaptive time step, defined here as the Retention Curve Zone Approach, was constructed and tested. The aim was to limit the error of a linear approximation to the time derivative part. Finally, parameter identification was performed in order to compare the behavior of the dual porosity model with data obtained from a non-homogenized fracture and matrix flow simulation experiment.
Homepage: http://drutes.org/public/?core=account
Source Code:  https://github.com/michalkuraz/drutes-dev
Keywords: Darcy’s law; variable saturation; retention curve; mass balance; adaptive time discretization; preferential flow; homogenization; parameter identification; multi-objective evolutionary algorithm
Related Software: ROS3P; Anderson; Adgfem; BL2D-V2; HYDRUS
Cited in: 10 Documents

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