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- Title
A Liouville Theorem for the Euler Equations in the Plane.
- Authors
Hamel, François; Nadirashvili, Nikolai
- Abstract
This paper is concerned with qualitative properties of bounded steady flows of an ideal incompressible fluid with no stagnation point in the two-dimensional plane R 2 . We show that any such flow is a shear flow, that is, it is parallel to some constant vector. The proof of this Liouville-type result is firstly based on the study of the geometric properties of the level curves of the stream function and secondly on the derivation of some estimates on the at-most-logarithmic growth of the argument of the flow in large balls. These estimates lead to the conclusion that the streamlines of the flow are all parallel lines.
- Subjects
EULER equations; EULER theorem; LIOUVILLE'S theorem; STAGNATION point; STREAM function; STEADY-state flow; INCOMPRESSIBLE flow; FLUID dynamics
- Publication
Archive for Rational Mechanics & Analysis, 2019, Vol 233, Issue 2, p599
- ISSN
0003-9527
- Publication type
Article
- DOI
10.1007/s00205-019-01364-x