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A numerical study of three-dimensional wall-bounded flows

A numerical study of three-dimensional wall-bounded flows
A numerical study of three-dimensional wall-bounded flows
Nonequilibrium three-dimensional (3-D) turbulent boundary layers are studied using direct numerical simulation (DNS). Time-developing flows are used to investigate the physics of spatial-developing ones. We find that application of a spanwise shear leads to the reduction of both the turbulent kinetic energy and drag, with the most dramatic reduction of the latter occurring when the shear is applied between y+? 5 and 15. When the three-dimensionality is produced by transverse skewing, the resulting alteration of the relationship between the Reynolds stresses is associated in large part with the effect of the pressure gradient upon the amplification or attenuation of the turbulent kinetic energy
0142-727X
333-342
Coleman, Gary N.
ea3639b9-c533-40d7-9edc-3c61246b06e0
Kim, John
6ef2ee34-636c-4183-b129-d3a45f9839fc
Le, Anh-Tuan
233e1ea7-5815-4bdb-a143-60a1f5998345
Coleman, Gary N.
ea3639b9-c533-40d7-9edc-3c61246b06e0
Kim, John
6ef2ee34-636c-4183-b129-d3a45f9839fc
Le, Anh-Tuan
233e1ea7-5815-4bdb-a143-60a1f5998345

Coleman, Gary N., Kim, John and Le, Anh-Tuan (1996) A numerical study of three-dimensional wall-bounded flows. International Journal of Heat and Fluid Flow, 17 (3), 333-342. (doi:10.1016/0142-727X(96)00042-2).

Record type: Article

Abstract

Nonequilibrium three-dimensional (3-D) turbulent boundary layers are studied using direct numerical simulation (DNS). Time-developing flows are used to investigate the physics of spatial-developing ones. We find that application of a spanwise shear leads to the reduction of both the turbulent kinetic energy and drag, with the most dramatic reduction of the latter occurring when the shear is applied between y+? 5 and 15. When the three-dimensionality is produced by transverse skewing, the resulting alteration of the relationship between the Reynolds stresses is associated in large part with the effect of the pressure gradient upon the amplification or attenuation of the turbulent kinetic energy

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Published date: 1996

Identifiers

Local EPrints ID: 71973
URI: http://eprints.soton.ac.uk/id/eprint/71973
ISSN: 0142-727X
PURE UUID: dda33b59-3690-4a88-81c1-a48eb45f14f1

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Date deposited: 13 Jan 2010
Last modified: 13 Mar 2024 20:54

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Contributors

Author: Gary N. Coleman
Author: John Kim
Author: Anh-Tuan Le

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