Systems of Hydrodynamic Type that Approximate Two-Dimensional Ideal Fluid Equations

被引：2
|
作者：
Dymnikov, V. P. [1 ]
Perezhogin, P. A. [1 ]
机构：
[1] Russian Acad Sci, Inst Numer Math, Moscow 119333, Russia
来源：
IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS | 2018年 / 54卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
ideal fluid; equilibrium states; finite-dimensional approximations; Hamiltonian systems; turbulence; STATISTICAL-MECHANICS; EQUILIBRIUM STATES; FLOW;
D O I：
10.1134/S0001433818030040
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Statistical properties of different finite-dimensional approximations of two-dimensional ideal fluid equations are studied. A special class of approximations introduced by A.M. Obukhov (systems of hydrodynamic type) is considered. Vorticity distributions over area and quasi-equilibrium coherent structures are studied. These coherent structures are compared to structures occurring in a viscous fluid with random forcing.
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页码：232 / 241
页数：10
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