On some decay properties of Stokes semigroup of compressible viscous fluid flow in a 2-dimensional exterior domain

Yuko Enomoto*, Yoshihiro Shibata

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In this paper, we proved the local energy decay and some L p-L q decay properties of solutions to the initial-boundary value problem for the Stokes equations of compressible viscous fluid flow in a 2-dimensional exterior domain. Kobayashi (1997) [19] and Kobayashi and Shibata (1999) [21] treated the same problem in a 3-dimensional exterior domain, and our results obtained in this paper are an extension of results in Kobayashi (1997) [19] and Kobayashi and Shibata (1999) [21] to the 2-dimensional case. The fundamental solution to the resolvent equations for the Stokes equations in ℝ 2 has a logarithmical singularity at λ=0, λ being a resolvent parameter, while it is continuous up to λ=0 in ℝ 3. This difference requires us a new idea to prove the local energy decay estimate. Once getting the local energy decay estimate, the required L p-L q decay estimates in the exterior domain are obtained by combining the local energy estimate and the L p-L q estimates in ℝ 2 by a cut-off technique.

本文言語English
ページ(範囲)6214-6249
ページ数36
ジャーナルJournal of Differential Equations
252
12
DOI
出版ステータスPublished - 2012 6月 15

ASJC Scopus subject areas

  • 分析
  • 応用数学

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