A density-constrained model for chemotaxis
A density-constrained model for chemotaxis
复制标题
趋化性的密度约束模型
DOI:
10.1088/1361-6544/acad5f
复制
发表时间:
2023
期刊:
影响因子:
1.7
通讯作者:
Wu, Yijing
中科院分区:
文献类型:
--
作者:
Kim, Inwon;Mellet, Antoine;Wu, Yijing
We consider a model of congestion dynamics with chemotaxis: the density of cells follows a chemical signal it generates, while subject to an incompressibility constraint. The incompressibility constraint results in the formation of patches, describing regions where the maximal density has been reached. The dynamics of these patches can be described by either Hele-Shaw or Richards equation type flow (depending on whether we consider the model with diffusion or the model with pure advection). Our focus in this paper is on the construction of weak solutions for this problem via a variational discrete time scheme of JKO type. We also establish the uniqueness of these solutions. In addition, we make more rigorous the connection between this incompressible chemotaxis model and the free boundary problems describing the motion of the patches in terms of the density and associated pressure variable. In particular, we obtain new results characterising the pressure variable as the solution of an obstacle problem and prove that in the pure advection case the dynamic preserves patches.
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DOI:
--
发表时间:
2022
期刊:
影响因子:
--
作者:
Inwon C. Kim;A. Mellet;Yijing Wu
通讯作者:
Yijing Wu
DOI:
10.1016/j.jfa.2017.08.009
发表时间:
2015
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
A. Mellet;B. Perthame;F. Quirós
通讯作者:
F. Quirós
影响因子:
10.2
作者:
G. Buttazzo;F. Santambrogio
通讯作者:
F. Santambrogio
影响因子:
3.5
作者:
N. Igbida
通讯作者:
N. Igbida
影响因子:
2.5
作者:
Craig, Katy;Kim, Inwon;Yao, Yao
通讯作者:
Yao, Yao