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

共 48 条

[31] Passive scalar advected by a very irregular random velocity field [J].

Gutman, D .

PHYSICAL REVIEW E, 1997, 56 (02) :2279-2281

[32]

Kraichnan R. H., 1974, Journal of Fluid Mechanics, V64, P737, DOI 10.1017/S0022112074001881

[33] Passive scalar: Sealing exponents and realizability [J].

Kraichnan, RH .

PHYSICAL REVIEW LETTERS, 1997, 78 (26) :4922-4925

[34] SCALING RELATIONS FOR A RANDOMLY ADVECTED PASSIVE SCALAR FIELD [J].

KRAICHNAN, RH ;

YAKHOT, V ;

CHEN, SY .

PHYSICAL REVIEW LETTERS, 1995, 75 (02) :240-243

[35] ANOMALOUS SCALING OF A RANDOMLY ADVECTED PASSIVE SCALAR [J].

KRAICHNAN, RH .

PHYSICAL REVIEW LETTERS, 1994, 72 (07) :1016-1019

[36] ANOMALOUS SCALING IN FLUID-MECHANICS - THE CASE OF THE PASSIVE SCALAR [J].

LVOV, VS ;

PROCACCIA, I ;

FAIRHALL, AL .

PHYSICAL REVIEW E, 1994, 50 (06) :4684-4704

[37] Perturbation theory for the delta-correlated model of passive scalar advection near the Batchelor limit [J].

Pumir, A ;

Shraiman, BI ;

Siggia, ED .

PHYSICAL REVIEW E, 1997, 55 (02) :R1263-R1266

[38] Determination of the three-point correlation function of a passive scaler in the presence of a mean gradient [J].

Pumir, A .

EUROPHYSICS LETTERS, 1997, 37 (08) :529-534

[39] Anomalous scaling behaviour of a passive scalar in the presence of a mean gradient [J].

Pumir, A .

EUROPHYSICS LETTERS, 1996, 34 (01) :25-29

[40] Structure of the three-point correlation function of a passive scalar in the presence of a mean gradient [J].

Pumir, A .

PHYSICAL REVIEW E, 1998, 57 (03) :2914-2929

← 1 2 3 4 5 →