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• W4313442060 abstract "Abstract 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." @default.
• W4313442060 created "2023-01-06" @default.
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• W4313442060 date "2023-01-03" @default.
• W4313442060 modified "2023-10-18" @default.
• W4313442060 title "A density-constrained model for chemotaxis" @default.
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• W4313442060 doi "https://doi.org/10.1088/1361-6544/acad5f" @default.
• W4313442060 hasPublicationYear "2023" @default.
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