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Experimental manipulation of wall turbulence: a systems approach

Experimental manipulation of wall turbulence: a systems approach
Experimental manipulation of wall turbulence: a systems approach
We review recent progress, based on the approach introduced by McKeon and Sharma [J. Fluid Mech. 658, 336–382 (2010)], in understanding and controlling wall turbulence. The origins of this analysis partly lie in nonlinear robust control theory, but a differentiating feature is the connection with, and prediction of, state-of-the-art understanding of velocity statistics and coherent structures observed in real, high Reynolds number flows. A key component of this line of work is an experimental demonstration of the excitation of velocity response modes predicted by the theory using non-ideal, but practical, actuation at the wall. Limitations of the approach and promising directions for future development are outlined.
1070-6631
31301
McKeon, Beverley
731f87c6-d84d-4b8e-8f52-87980796f300
Sharma, Ati
cdd9deae-6f3a-40d9-864c-76baf85d8718
Jacobi, Ian
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McKeon, Beverley
731f87c6-d84d-4b8e-8f52-87980796f300
Sharma, Ati
cdd9deae-6f3a-40d9-864c-76baf85d8718
Jacobi, Ian
ee337f64-0986-4ab4-a7d9-4e84a535b33c

McKeon, Beverley, Sharma, Ati and Jacobi, Ian (2013) Experimental manipulation of wall turbulence: a systems approach. Physics of Fluids, 25 (3), 31301. (doi:10.1063/1.4793444).

Record type: Article

Abstract

We review recent progress, based on the approach introduced by McKeon and Sharma [J. Fluid Mech. 658, 336–382 (2010)], in understanding and controlling wall turbulence. The origins of this analysis partly lie in nonlinear robust control theory, but a differentiating feature is the connection with, and prediction of, state-of-the-art understanding of velocity statistics and coherent structures observed in real, high Reynolds number flows. A key component of this line of work is an experimental demonstration of the excitation of velocity response modes predicted by the theory using non-ideal, but practical, actuation at the wall. Limitations of the approach and promising directions for future development are outlined.

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Published date: March 2013
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 350291
URI: http://eprints.soton.ac.uk/id/eprint/350291
ISSN: 1070-6631
PURE UUID: 3db34c34-8279-4b19-9732-084d566061fc
ORCID for Ati Sharma: ORCID iD orcid.org/0000-0002-7170-1627

Catalogue record

Date deposited: 25 Mar 2013 11:40
Last modified: 21 Nov 2021 03:08

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Contributors

Author: Beverley McKeon
Author: Ati Sharma ORCID iD
Author: Ian Jacobi

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