The University of Southampton
University of Southampton Institutional Repository

On the effects of nonequilibrium on the subgrid-scale stresses

Record type: Article

An a priori study of the subgrid-scale (SGS) stresses and dissipation in two nonequilibrium, wall-bounded flows is carried out. The velocity fields were computed by direct simulations of two- and three-dimensional boundary layers obtained, respectively, by a sudden change in the Reynolds number and by an impulsive motion in the spanwise direction of the lower wall of a plane channel in fully developed turbulent flow conditions. Several realizations of the transient period of the flow were examined. The SGS stresses react to the imposition of the secondary shear more rapidly than the large-scale ones, and return to equilibrium before the resolved stresses do. In general, the subgrid scales are less sensitive than the large ones to the near-wall and nonequilibrium effects. Scale-similar and dynamic models appear well-suited to reproduce the correlation between resolved Reynolds stress production and events with significant production of SGS energy

PDF on_the_effects_of_nonequilibrium_on_the_subgrid_scale_stresses.pdf - Version of Record
Download (299kB)

Citation

Piomelli, U., Coleman, G.N. and Kim, J. (1997) On the effects of nonequilibrium on the subgrid-scale stresses Physics of Fluids, 9, pp. 2740-2748. (doi:10.1063/1.869385).

More information

Published date: September 1997

Identifiers

Local EPrints ID: 71968
URI: http://eprints.soton.ac.uk/id/eprint/71968
ISSN: 1070-6631
PURE UUID: f8273cc0-5b2a-4ca3-b73a-eb0b77675a71

Catalogue record

Date deposited: 13 Jan 2010
Last modified: 18 Jul 2017 23:57

Export record

Altmetrics

Contributors

Author: U. Piomelli
Author: G.N. Coleman
Author: J. Kim

University divisions


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×