Inertial Range Scalings of Dissipation and Enstrophy in Isotropic Turbulence

Shiyi Chen; Katepalli R. Sreenivasan; Mark Nelkin

doi:10.1103/PhysRevLett.79.1253

Inertial Range Scalings of Dissipation and Enstrophy in Isotropic Turbulence

Shiyi Chen, Katepalli R. Sreenivasan, and Mark Nelkin

Phys. Rev. Lett. 79, 1253 – Published 18 August 1997

Abstract

The inertial range scalings of local averages of energy dissipation rate and enstrophy (vorticity squared) are studied using high resolution direct numerical simulation data for homogeneous and isotropic turbulence. The Taylor microscale Reynolds number is 216. It is found that the enstrophy is more intermittent than dissipation, consistent with previous one-dimensional surrogate measurements at high Reynolds numbers. Contrary to some recent expectations, enstrophy and dissipation have different exponents.

Received 24 April 1997

DOI:https://doi.org/10.1103/PhysRevLett.79.1253

Authors & Affiliations

Shiyi Chen^1,2, Katepalli R. Sreenivasan³, and Mark Nelkin^4,5

¹IBM Research Division, T. J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
²Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
³Mason Laboratory, Yale University, New Haven, Connecticut 06520-8286
⁴Physics Department, New York University, New York, New York 10003
⁵and Levich Institute, CCNY, New York, New York 10031