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Article Dans Une Revue Quarterly of Applied Mathematics Année : 2021

Diffeomorphic shape evolution coupled with a reaction-diffusion PDE on a growth potential

Dai-Ni Hsieh
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Nicolas Charon
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Laurent Younes
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Résumé

This paper studies a longitudinal shape transformation model in which shapes are deformed in response to an internal growth potential that evolves according to an advection reaction diffusion process. This model extends prior works that considered a static growth potential, i.e., the initial growth potential is only advected by diffeomorphisms. We focus on the mathematical study of the corresponding system of coupled PDEs describing the joint dynamics of the diffeomorphic transformation together with the growth potential on the moving domain. Specifically, we prove the uniqueness and long time existence of solutions to this system with reasonable initial and boundary conditions as well as regularization on deformation fields. In addition, we provide a few simple simulations of this model in the case of isotropic elastic materials in 2D.
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Dates et versions

hal-03413638 , version 1 (03-11-2021)

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Dai-Ni Hsieh, Sylvain Arguillere, Nicolas Charon, Laurent Younes. Diffeomorphic shape evolution coupled with a reaction-diffusion PDE on a growth potential. Quarterly of Applied Mathematics, 2021, ⟨10.1090/qam/1600⟩. ⟨hal-03413638⟩
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