On a linear DG approximation of chemotaxis models with damping gradient nonlinearities
Provides a novel numerical method for simulating chemotaxis models, relevant to researchers studying pattern formation and blow-up phenomena in biology.
The paper presents a linear, positivity-preserving upwind discontinuous Galerkin approximation for chemotaxis models with damping gradient nonlinearities. Numerical experiments confirm that the damping gradient term prevents blow-up, consistent with theoretical analysis.
In this work we present a novel linear and positivity preserving upwind discontinuous Galerkin (DG) approximation of a class of chemotaxis models with damping gradient nonlinearities. In particular, both a local and a nonlocal model including nonlinear diffusion, chemoattraction, chemorepulsion and logistic growth are considered. Some numerical experiments in the context of chemotactic collapse are presented, whose results are in accordance with the previous analysis of the approximation and show how the blow-up can be prevented by means of the damping gradient term.