The University of Southampton
University of Southampton Institutional Repository

Direct numerical simulation of strained three-dimensional wall-bounded flows

Coleman, G.N., Kim, J. and Spalart, P.R. (1996) Direct numerical simulation of strained three-dimensional wall-bounded flows Experimental Thermal and Fluid Science, 13, (3), pp. 239-251. (doi:10.1016/S0894-1777(96)00084-2).

Record type: Article


Fully developed two-dimensional channel-flow turbulence is subjected to mean strains that imitate those produced by pressure gradients in three-dimensional boundary layers. This is achieved by applying irrotational temporal deformations to the flow domain in a conventional channel direct-numerical-simulation (DNS) code; straining deformations at an angle with respect to the initial flow direction generate a mean cross flow and thus mean three-dimensionality. The velocity difference carried by the near-wall region is further controlled by mean pressure gradients (or by accelerating the walls in-plane), thus introducing another effect of pressure gradients in boundary layers. “Numerical experiments” allow the effects of the inviscid skewing mechanism, adverse pressure gradient, and inner layer to be isolated; our primary interest here is in the outer layer. We present five simulations. In-plane skewing decreases both the Reynolds shear stress and turbulent kinetic energy, whereas strains characteristic of two-dimensional adverse pressure gradients increase them. In all cases, the structure parameter a1, the ratio of shear stress to energy, is diminished, which implies a reduction in the efficiency of the kinetic energy production by the mean shear.

Full text not available from this repository.

More information

Published date: October 1996


Local EPrints ID: 71970
ISSN: 0894-1777
PURE UUID: 15c4cd0b-ffcc-4163-a564-3f5ecdbd437a

Catalogue record

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

Export record



Author: G.N. Coleman
Author: J. Kim
Author: P.R. Spalart

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 supports OAI 2.0 with a base URL of

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.