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

页码：2015 / 2019

页数：5

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