ON THE PROBABILITY DENSITY-FUNCTION OF VELOCITY-GRADIENTS IN FULLY-DEVELOPED TURBULENCE

被引：20

作者：

FRISCH, U

SHE, ZS

机构：

[1] Program in Applied and Computational Mathematics, Princeton University, Princeton

来源：

FLUID DYNAMICS RESEARCH | 1991年 / 8卷 / 1-4期

关键词：

D O I：

10.1016/0169-5983(91)90038-K

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A simple fluctuation argument A la Landau suggests why probability density functions of velocity gradients of turbulent velocity fields are often found to have a close to exponential tail. The detailed functional form depends on the assumptions made concerning the intermittency.

引用

页码：139 / 142

页数：4

共 18 条

[1]

Brachet, C. R. Acad. Sci. Paris Ser. II, 311, (1990)

[2]

Frisch, Morf, Phys. Rev., 23 A, (1981)

[3]

Frisch, Sulem, Nelkin, A simple dynamical model of intermittent fully developed turbulence, Journal of Fluid Mechanics, 87, (1978)

[4]

Hosokawa, Yamamoto, J. Phys. Soc. Japan, 58, (1989)

[5]

Kolmogorov, C. R. Acad. Sci. URSS., 30, (1941)

[6]

Kolmogorov, A refinement of previous hypotheses concerning the local structure of turbulence in a viscous incompressible fluid at high Reynolds number, Journal of Fluid Mechanics, 12, (1962)

[7]

Kraichnan, Phys. Fluids, 10, (1967)

[8]

Kraichnan, Phys. Rev. Lett., 65, (1990)

[9]

Mandelbrot, J. Fluid Mech., 62, (1974)

[10]

Monin, Yaglom, Statistical Fluid Mechanics, 2, (1975)

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