Existence and stability of planar shocks of viscous scalar conservation laws with space-periodic flux

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The goal of this paper is to prove the existence and stability of shocks for viscous scalar conservation laws with space periodic flux, in the multi-dimensional case. Such a result had been proved by the first author in one space dimension, but the extension to a multi-dimensional setting makes the existence proof non-trivial. We construct approximate solutions by restricting the size of the domain and then passing to the limit as the size of the domain goes to infinity. One of the key steps is a "normalization" procedure, which ensures that the limit objects obtained by the approximation scheme are indeed shocks. The proofs rely on elliptic PDE theory rather than ODE arguments as in the 1d case. Once the existence of shocks is proved, their stability follows from classical arguments based on the theory of dynamical systems.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2017-03
Language
English
Article Type
Article
Citation

JOURNAL DE MATHEMATIQUES PURES ET APPLIQUEES, v.107, no.3, pp.336 - 366

ISSN
0021-7824
DOI
10.1016/j.matpur.2016.07.003
URI
http://hdl.handle.net/10203/278720
Appears in Collection
MA-Journal Papers(저널논문)
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