Two-fluid model of the truncated Euler equations

被引：22
|
作者：
Krstulovic, Giorgio [1 ]
Brachet, Marc-Etienne
机构：
[1] Ecole Normale Super, Phys Stat Lab, CNRS, F-75231 Paris, France
来源：
PHYSICA D-NONLINEAR PHENOMENA | 2008年 / 237卷 / 14-17期
关键词：
truncated Euler equations; absolute equilibrium; EDQNM;
D O I：
10.1016/j.physd.2007.11.008
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A phenomenological two-fluid model of the (time-reversible) spectrally-truncated 3D Euler equation is proposed. The thermalized small scales are first shown to be quasi-normal. The effective viscosity and thermal diffusion are then determined, using EDQNM Closure and Monte-Carlo numerical computations. Finally, the model is validated by comparing its dynamics with that of the original truncated Euler equation. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：2015 / 2019
页数：5
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