Properties of velocity circulation in three-dimensional turbulence

被引：27

作者：

Cao, N

Chen, SY

Sreenivasan, KR

机构：

[1] LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA

[2] LOS ALAMOS NATL LAB, CTR NONLINEAR STUDIES, LOS ALAMOS, NM 87545 USA

[3] INST ADV STUDY, PRINCETON, NJ 08540 USA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.76.616

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Properties of velocity circulation in three-dimensional turbulence are studied using data from high-resolution direct numerical simulation of Navier-Stokes equations. The probability density function (PDF) of the circulation depends on the area of the closed contour for which circulation is calculated, but not on the shape of the contour. For contours lying within the inertial range, the PDF has a Gaussian core with conspicuous exponential tails, indicating that intermittency plays an important role in circulation statistics. The measured scaling exponents are anomalous and substantially smaller than those implied by Kolmogorov's phenomenology.

引用

页码：616 / 619

页数：4

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