STOCHASTIC DIFFUSION IN 2-DIMENSIONAL PERIODIC FLOWS

被引：10

作者：

DOXAS, I ^{[1
]}

HORTON, W ^{[1
]}

BERK, HL ^{[1
]}

机构：

[1] UNIV TEXAS,INST FUS STUDIES,AUSTIN,TX 78712

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1990年 / 2卷 / 10期

关键词：

D O I：

10.1063/1.857665

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The global effective diffusion coefficient D * for a two-dimensional system of convective rolls with a time-dependent perturbation added is calculated. The perturbation produces a background diffusion coefficient D, which is calculated analytically using the Menlikov-Arnold integral. This intrinsic diffusion coefficient is then enhanced by the unperturbed flow to produce the global effective diffusion coefficient D *, which can be calculated theoretically for a certain range of parameters. The theoretical value agrees well with numerical simulations. © 1990 American Institute of Physics.

引用

页码：1906 / 1909

页数：4

共 21 条

[1] Particle paths in wavy vortices [J].

Broomhead, D. S. ;

Ryrie, Susan C. .

NONLINEARITY, 1988, 1 (03) :409-434

[2] DIFFUSION OF PARTICLES IN A SLOWLY MODULATED WAVE [J].

BRUHWILER, DL ;

CARY, JR .

PHYSICA D, 1989, 40 (02) :265-282

[3] ADIABATIC-INVARIANT CHANGE DUE TO SEPARATRIX CROSSING [J].

CARY, JR ;

ESCANDE, DF ;

TENNYSON, JL .

PHYSICAL REVIEW A, 1986, 34 (05) :4256-4275

[4] ALPHA-EFFECT IN FLUX ROPES AND SHEETS [J].

CHILDRESS, S .

PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 1979, 20 (2-4) :172-180

[5] NEW SOLUTIONS OF KINEMATIC DYNAMO PROBLEM [J].

CHILDRESS, S .

JOURNAL OF MATHEMATICAL PHYSICS, 1970, 11 (10) :3063-+

[6] UNIVERSAL INSTABILITY OF MANY-DIMENSIONAL OSCILLATOR SYSTEMS [J].

CHIRIKOV, BV .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1979, 52 (05) :263-379

[7]

DOXAS I, 1988, THESIS U TEXAS

[8]

ESCANDE DF, 1985, PHYS REP, V121, P167

[9]

GRUZINOV AV, 1990, ZH EKSP TEOR FIZ+, V97, P476

[10] ANOMALOUS ION CONDUCTION FROM TOROIDAL DRIFT MODES [J].

HORTON, W .

PLASMA PHYSICS AND CONTROLLED FUSION, 1981, 23 (12) :1107-1125

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