Dynamics Near the Subcritical Transition of the 3d Couette Flow: Above Threshold Case - Couverture souple

Bedrossian, Jacob; Germain, Pierre; Masmoudi, Nader

Couverture souple

ISBN 10 : 1470472252 ISBN 13 : 9781470472252

Editeur : American Mathematical Society, 2022

Synopsis

This is the second in a pair of works which study small disturbances to the plane, periodic 3D Couette flow in the incompressible Navier-Stokes equations at high Reynolds number Re. In this work, we show that there is constant 0 0 exist at least until t = c0???1 and in general evolve to be O(c0) due to the lift-up e?ect. Further, after times t Re1/3, the streamwise dependence of the solution is rapidly diminished by a mixing-enhanced dissipation e?ect and the solution is attracted back to the class of "2.5 dimensional" streamwise-independent solutions (sometimes referred to as "streaks"). The largest of these streaks are expected to eventually undergo a secondary instability at t ? ???1. Hence, our work strongly suggests, for all (sufficiently regular) initial data, the genericity of the "lift-up e?ect streak growth streak breakdown" scenario for turbulent transition of the 3D Couette flow near the threshold of stability forwarded in the applied mathematics and physics literature.

A propos du livre

À propos de l?auteur

Jacob Bedrossian, University of Maryland, College Park, MD.

Pierre Germain, Courant Institute of Mathematical Sciences, New York City, NY.

Nader Masmoudi, Courant Institute of Mathematical Sciences, New York City, New York.

Détails de l'édition

• Éditeur: American Mathematical Society
• Date d'édition: 2022
• Langue: anglais
• ISBN 10: 1470472252
• ISBN 13: 9781470472252
• Reliure: Broché
• Nombre de pages: 133
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible