publication . Part of book or chapter of book . Article . 2005

Decaying two-dimensional turbulence in a circular container.

Marie Farge;
Open Access
  • Published: 01 Dec 2005
  • Publisher: Springer Berlin Heidelberg
Abstract
We present direct numerical simulations of two-dimensional decaying turbulence at initial Reynolds number $5\ifmmode\times\else\texttimes\fi{}{10}^{4}$ in a circular container with no-slip boundary conditions. Starting with random initial conditions the flow rapidly exhibits self-organization into coherent vortices. We study their formation and the role of the viscous boundary layer on the production and decay of integral quantities. The no-slip wall produces vortices which are injected into the bulk flow and tend to compensate the enstrophy dissipation. The self-organization of the flow is reflected by the transition of the initially Gaussian vorticity probabil...
Subjects
arXiv: Physics::Fluid Dynamics
free text keywords: Condensed matter physics, Classical mechanics, Physics, Reynolds number, symbols.namesake, symbols, Enstrophy, Vortex, Direct numerical simulation, Vorticity, Mechanics, Turbulence, Boundary value problem, Vortex ring, General Physics and Astronomy
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