Bilinear form, bilinear auto-Bäcklund transformation, soliton and half-periodic kink solutions on the non-zero background of a (3+ 1)-dimensional time-dependent …

TY Zhou, B Tian, Y Shen, XT Gao - Wave Motion, 2023 - Elsevier
Nonlinear evolution equations (NLEEs) are seen in such fields as fluid dynamics, plasma
physics and optics. A (3+ 1)-dimensional time-dependent-coefficient Boiti-Leon-Manna …

Bend 3d mixed virtual element method for Darcy problems

F Dassi, A Fumagalli, A Scotti, G Vacca - Computers & Mathematics with …, 2022 - Elsevier
In this study, we propose a virtual element scheme to solve the Darcy problem in three
physical dimensions. The main novelty is that curved elements are naturally handled without …

[HTML][HTML] Modeling plant water deficit by a non-local root water uptake term in the unsaturated flow equation

M Berardi, G Girardi - … in Nonlinear Science and Numerical Simulation, 2024 - Elsevier
In this paper we present a novel way to mathematically frame the concept of ecological
memory of plant water stress in the context of root water uptake in unsaturated flow …

The mixed virtual element method on curved edges in two dimensions

F Dassi, A Fumagalli, D Losapio, S Scialò… - Computer Methods in …, 2021 - Elsevier
In this work, we propose an extension of the mixed Virtual Element Method (VEM) for bi-
dimensional computational grids with curvilinear edge elements. The approximation by …

Optimizing water consumption in Richards' equation framework with step-wise root water uptake: A simplified model

M Berardi, M D'Abbicco, G Girardi, M Vurro - Transport in Porous Media, 2022 - Springer
This work arises from the need of exploring new features for modeling and optimizing water
consumption in irrigation processes. In particular, we focus on water flow model in …

A fully-discrete virtual element method for the nonstationary Boussinesq equations in stream-function form

LB da Veiga, D Mora, A Silgado - Computer Methods in Applied Mechanics …, 2023 - Elsevier
In the present work we propose and analyze a fully-coupled virtual element method of high
order for solving the two dimensional nonstationary Boussinesq system in terms of the …

A quadrature-based scheme for numerical solutions to Kirchhoff transformed Richards' equation

M Berardi, FV Difonzo - Journal of Computational Dynamics, 2022 - aimsciences.org
In this work we propose a new numerical scheme for solving Richards' equation within
Gardner's framework and accomplishing mass conservation. In order to do so, we resort to …

A numerical implementation for the high-order 2D virtual element method in MATLAB

C Herrera, R Corrales-Barquero, J Arroyo-Esquivel… - Numerical …, 2023 - Springer
We present a numerical implementation for the Virtual Element Method that incorporates
high order spaces. We include all the required computations in order to assemble the …

A unified analysis of fully mixed virtual element method for wormhole propagation arising in the petroleum engineering

M Dehghan, Z Gharibi - Computers & Mathematics with Applications, 2022 - Elsevier
Wormhole propagation, arising in petroleum engineering, is used to describe the distribution
of acid and the increase of porosity in carbonate reservoir under the dissolution of injected …

SUPG-stabilized virtual elements for diffusion-convection problems: a robustness analysis

LB da Veiga, F Dassi, C Lovadina… - … Modelling and Numerical …, 2021 - esaim-m2an.org
The objective of this contribution is to develop a convergence analysis for SUPG-stabilized
Virtual Element Methods in diffusion-convection problems that is robust also in the …