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Un poste de lecturer IA est annoncé sur le site de SCAI


Chiffres clefs

189 personnes travaillent au LJLL

86 permanents

80 chercheurs et enseignants-chercheurs permanents

6 ingénieurs, techniciens et personnels administratifs

103 personnels non permanents

74 doctorants

15 post-doc et ATER

14 émérites et collaborateurs bénévoles


Chiffres janvier 2022


Séminaire du LJLL - 16 06 2017 14h00 : Y. Maekawa

Yasunori Maekawa (Université de Kyoto)

On the stability of the physically reasonable solution to the two-dimensional Navier-Stokes equations

The flow past an obstacle is a fundamental object in fluid mechanics. In 1967 R. Finn and D.R. Smith proved the existence and uniqueness of a stationary solution that they called "the physically reasonable solution" to the Navier-Stokes equations in a two-dimensional exterior domain modeling this type of flows, when the Reynolds number is sufficiently small. The asymptotic behavior of this solution at infinity in space has been studied in details and is well understood by now, while its stability remained an open problem due to difficulties specific to the two-dimensionality.
In this talk we show that the physically reasonable solution constructed by Finn and Smith is asymptotically stable with respect to small and well-localized initial perturbations.