Dissipation of kinetic energy in two-dimensional bounded flows

被引：29

作者：

Clercx, HJH ^{[1
]}

van Heijst, GJF ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Dept Phys, NL-5600 MB Eindhoven, Netherlands

来源：

PHYSICAL REVIEW E | 2002年 / 65卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.65.066305

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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=-2Omega(t)/Reproportional to1/rootRe instead of the familiar relation dE(t)/dtproportional to1/Re as found for 2D unbounded flows.

引用

页码：1 / 066305

页数：4

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