Global Weak Solutions to a Cahn-Hilliard-Navier-Stokes System with Chemotaxis and Singular Potential

Autor:	He, Jingning
Rok vydání:	2020
Předmět:	Mathematics - Analysis of PDEs 35A01 35A02 35K35 35Q92 76D05
Druh dokumentu:	Working Paper
Popis:	We analyze a diffuse interface model that describes the dynamics of incompressible two-phase flows with chemotaxis effect. The PDE system couples a Navier-Stokes equation for the fluid velocity, a convective Cahn-Hilliard equation for the phase field variable with an advection-diffusion-reaction equation for the nutrient density. For the system with a singular potential, we prove the existence of global weak solutions in both two and three dimensions. Besides, in the two dimensional case, we establish a continuous dependence result that implies the uniqueness of global weak solutions. The singular potential guarantees that the phase field variable always stays in the physically relevant interval [-1,1] during time evolution. This property enables us to obtain the well-posedness result without any extra assumption on the coefficients that has been made in the previous literature. Comment: 35 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2002.00159 Zobrazit plný text záznamu View this record from Arxiv