Dissipation of kinetic energy in two-dimensional bounded flows

H.J.H. Clercx, G.J.F. Heijst, van

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Abstract

The role of no-slip boundaries as an enstrophy source in two-dimensional (2D) flows has been investigated for high Reynolds numbers. Numerical simulations of normal and oblique dipole-wall collisions are performed to investigate the dissipation of the kinetic energy E(t), and the evolution of the enstrophy [Omega] (t) and the palinstrophy P(t). It is shown for large Reynolds numbers that dE(t)/dt = ?2 [Omega] (t)/Re [[proportional]] 1/ [sqrt(Re)] instead of the familiar relation dE(t)/dt [[proportional]] 1/Re as found for 2D unbounded flows
Original languageEnglish
Article number066305
Pages (from-to)066305-1/4
Number of pages4
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume65
Issue number6
DOIs
Publication statusPublished - 2002

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