Well-posedness and stability analysis for a moving boundary problem modelling the growth of nonnecrotic tumors

Details Well-posedness and stability analysis for a moving boundary problem modelling the growth of nonnecrotic tumors Well-posedness and stability analysis for a moving boundary problem modelling the growth of nonnecrotic tumors

2010-03-04

arxiv.org/abs/1003.1068v1

Mathematics

Analysis of PDEs

26 pages, 2 figures

Scientific paper

We study a moving boundary problem describing the growth of nonnecrotic tumors in different regimes of vascularisation. This model consists of two decoupled Dirichlet problem, one for the rate at which nutrient is added to the tumor domain and one for the pressure inside the tumor. These variables are coupled by a relation which describes the dynamic of the boundary. By re-expressing the problem as an abstract evolution equation, we prove local well-posedness in the small Hoelder spaces context. Further on, we use the principle of linearised stability to characterise the stability properties of the unique radially symmetric equilibrium of the problem.

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