Flux-corrected transport stabilization of an evolutionary cross-diffusion cancer invasion model

verfasst von: Shahin Heydari, Petr Knobloch, Thomas Wick
Abstract: In the present work, we investigate a model of the invasion of healthy tissue by cancer cells which is described by a system of nonlinear PDEs consisting of a cross-diffusion-reaction equation and two additional nonlinear ordinary differential equations. We show that when the convective part of the system, the haptotaxis term, is dominant, then straightforward numerical methods for the studied system may be unstable. We present an implicit finite element method using conforming P₁ or Q₁ finite elements to discretize the model in space and the θ-method for discretization in time. The discrete problem is stabilized using a nonlinear flux-corrected transport approach. It is proved that both the nonlinear scheme and the linearized problems used in fixed-point iterations are solvable and positivity preserving. Several numerical experiments are presented in 2D to demonstrate the performance of the proposed method.
Organisationseinheit(en): Institut für Angewandte Mathematik
Externe Organisation(en): Charles University
Typ: Artikel
Journal: Journal of computational physics
Band: 499
ISSN: 0021-9991
Publikationsdatum: 15.02.2024
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Numerische Mathematik, Modellierung und Simulation, Physik und Astronomie (sonstige), Physik und Astronomie (insg.), Angewandte Informatik, Computational Mathematics, Angewandte Mathematik
Ziele für nachhaltige Entwicklung: SDG 3 – Gute Gesundheit und Wohlergehen
Elektronische Version(en): https://doi.org/10.48550/arXiv.2307.08096 (Zugang: Offen)
https://doi.org/10.1016/j.jcp.2023.112711 (Zugang: Geschlossen)