Abstract
The problem of modeling water flow in the root zone with plant root absorption is of crucial importance in many environmental and agricultural issues, and is still of interest in the applied mathematics community. In this work we propose a formal justification and a theoretical background of a recently introduced numerical approach, based on the shooting method, for integrating the unsaturated flow equation with a sink term accounting for the root water uptake model. Moreover, we provide various numerical simulations for this method, comparing the results with the numerical solutions obtained by MATLAB pdepe .
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Acknowledgments
The first author has been funded by REFIN Project, grant number 812E4967. The second author acknowledges the partial support of the project RIUBSAL (grant number 030_DIR_2020_00178), funded by Regione Puglia through the P.S.R. Puglia 2014/2020 - Misura 16 – Cooperazione - Sottomisura 16.2 call.
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Difonzo, F.V., Girardi, G. (2021). On the Shooting Method Applied to Richards’ Equation with a Forcing Term. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2021. ICCSA 2021. Lecture Notes in Computer Science(), vol 12949. Springer, Cham. https://doi.org/10.1007/978-3-030-86653-2_20
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