Helicity spectra and dissipation

被引:5
作者
Chkhetiani, O. G. [2 ]
Golbraikh, E. [1 ]
机构
[1] Ben Gurion Univ Negev, Ctr MHD Studies, IL-84105 Beer Sheva, Israel
[2] Russian Acad Sci, Space Res Inst, Moscow 117810, Russia
关键词
turbulence; helicity; helicity dissipation;
D O I
10.1016/j.physleta.2008.06.079
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the helicity, dissipation and spectrum on the basis of an asymptotic model introducing a dependence of the angle between turbulent vorticity and velocity components on the governing parameters into it. This leads to helicity spectra similar to those observed experimentally and obtained by DNS model computations by various authors. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:5603 / 5604
页数:2
相关论文
共 12 条
[1]   Links between dissipation, intermittency, and helicity in the GOY model revisited [J].
Bowman, John C. ;
Doering, Charles R. ;
Eckhardt, Bruno ;
Davoudi, Jahanshah ;
Roberts, Malcolm ;
Schumacher, Jorg .
PHYSICA D-NONLINEAR PHENOMENA, 2006, 218 (01) :1-10
[2]  
Branover H., 1999, TURBULENCE STRUCTURE
[3]   The joint cascade of energy and helicity in three-dimensional turbulence [J].
Chen, QN ;
Chen, SY ;
Eyink, GL .
PHYSICS OF FLUIDS, 2003, 15 (02) :361-374
[4]   Cascades in helical turbulence [J].
Ditlevsen, PD ;
Giuliani, P .
PHYSICAL REVIEW E, 2001, 63 (03)
[5]   Physical space properties of helicity in quasi-homogeneous forced turbulence [J].
Galanti, B ;
Tsinober, A .
PHYSICS LETTERS A, 2006, 352 (1-2) :141-149
[6]   Helical turbulent spectra in the presence of energy and helicity fluxes [J].
Golbraikh, E. .
PHYSICS LETTERS A, 2006, 354 (03) :214-216
[7]   Different spectra formation in the presence of helical transfer [J].
Golbraikh, E ;
Moiseev, SS .
PHYSICS LETTERS A, 2002, 305 (3-4) :173-175
[8]   Understanding turbulence through numerical simulations [J].
Gómez, DO ;
Mininni, PD .
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2004, 342 (1-2) :69-75
[9]   Experimental studies of turbulent helicity and its spectrum in the atmospheric boundary layer [J].
Koprov, BM ;
Koprov, VM ;
Ponomarev, VM ;
Chkhetiani, OG .
DOKLADY PHYSICS, 2005, 50 (08) :419-422
[10]  
LESIEUR M, 1991, TURBULENCE FLUIDS