Simulations of a randomly advected passive scalar field

被引：52

作者：

Chen, SY ^{[1
]}

Kraichnan, RH ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA

来源：

PHYSICS OF FLUIDS | 1998年 / 10卷 / 11期

关键词：

D O I：

10.1063/1.869808

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The advection of a passive scalar field by a rapidly decorrelating random velocity field with power-law scaling is computed by simulations in a cyclic square at resolutions of 4096(2) and 8192(2) grid points. Structure functions of the scalar field are measured and inertial-range scaling exponents are determined. The conditional mean of the scalar-field dissipation term and its moments are found. The results are compared with theoretical predictions and with other recent simulations. (C) 1998 American Institute of Physics. [S1070-6631(98)00211-6]

引用

页码：2867 / 2884

页数：18

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