Helicity transfer in turbulent models

被引：24

作者：

Biferale, L

Pierotti, D

Toschi, F

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[2] Ist Nazl Fis Mat, Unita Tor Vergata, I-00133 Rome, Italy

[3] Univ Aquila, Dipartimento Fis, I-67010 Laquila, Italy

[4] Univ Pisa, Dipartimento Fis, I-56126 Pisa, Italy

[5] Ist Nazl Fis Nucl, I-56126 Pisa, Italy

来源：

PHYSICAL REVIEW E | 1998年 / 57卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.57.R2515

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Helicity transfer in a shell model of turbulence is investigated. We show that a Reynolds-independent helicity flux is present in the model when the large scale forcing breaks inversion symmetry. The equivalent in shell models of the "2/15 law," obtained from helicity conservation in Navier-Stokes equations, is derived and tested. The odd part of the helicity flux statistics is found to be dominated by a few very intense events. In a particular model, we calculate analytically leading and subleading contributions to the scaling of triple velocity correlation.

引用

页码：R2515 / R2518

页数：4

共 22 条

[11] HELICAL TURBULENCE AND ABSOLUTE EQUILIBRIUM [J].

KRAICHNAN, RH .

JOURNAL OF FLUID MECHANICS, 1973, 59 (AUG7) :745-752

[12] Cascade structures and scaling exponents in a dynamical model of turbulence: Measurements and comparison [J].

Leveque, E ;

She, ZS .

PHYSICAL REVIEW E, 1997, 55 (03) :2789-2799

[13]

LEVICH, 1991, PHYSICA A, V170, P241

[14]

LVOV VS, 1997, 9706018 LOS AL NAT L

[15]

LVOV VS, 1997, 9705016 LOS AL NAT L

[16] THE MULTIFRACTAL NATURE OF TURBULENT ENERGY-DISSIPATION [J].

MENEVEAU, C ;

SREENIVASAN, KR .

JOURNAL OF FLUID MECHANICS, 1991, 224 :429-484

[17] TEMPORAL INTERMITTENCY IN THE ENERGY CASCADE PROCESS AND LOCAL LYAPUNOV ANALYSIS IN FULLY-DEVELOPED MODEL TURBULENCE [J].

OHKITANI, K ;

YAMADA, M .

PROGRESS OF THEORETICAL PHYSICS, 1989, 81 (02) :329-341

[18] FURTHER RESULTS ON MULTIFRACTALITY IN SHELL MODELS [J].

PISARENKO, D ;

BIFERALE, L ;

COURVOISIER, D ;

FRISCH, U ;

VERGASSOLA, M .

PHYSICS OF FLUIDS A-FLUID DYNAMICS, 1993, 5 (10) :2533-2538

[19] THE NATURE OF TRIAD INTERACTIONS IN HOMOGENEOUS TURBULENCE [J].

WALEFFE, F .

PHYSICS OF FLUIDS A-FLUID DYNAMICS, 1992, 4 (02) :350-363

[20] LYAPUNOV SPECTRUM OF A CHAOTIC MODEL OF 3-DIMENSIONAL TURBULENCE [J].

YAMADA, M ;

OHKITANI, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1987, 56 (12) :4210-4213

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