The University of Southampton
University of Southampton Institutional Repository

Numerical studies of the automatic control of Boundary-Layer transition via multiple suction panels

Numerical studies of the automatic control of Boundary-Layer transition via multiple suction panels
Numerical studies of the automatic control of Boundary-Layer transition via multiple suction panels

A numerical algorithm is introduced for the optimization of the suction distribution to maintain transition at a desired position for a flow over a flat plate with a smooth two-dimensional hump and an array of suction panels. The computation consists of the calculation of the interacting boundary-layer flow, the determination of the spatial growth rates of the disturbance waves, the prediction of the transition location via the eN-method and finally of the optimization of the suction flow rates using a modified least mean-squares algorithm. The optimization algorithm has been successfully applied to plates with two or four suction panels. The results show clearly that the pressure distribution has a highly significant effect on the optimum suction distribution over the plate. The numerical code shows its potential to be applied to laminar flow control aerofoils to determine the optimum suction distribution for given flight conditions.

Hackenberg, P.
ca6ca0f4-627d-4652-8872-9cc9ddb8b76a
Tutty, O. R.
c9ba0b98-4790-4a72-b5b7-09c1c6e20375
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Hackenberg, P.
ca6ca0f4-627d-4652-8872-9cc9ddb8b76a
Tutty, O. R.
c9ba0b98-4790-4a72-b5b7-09c1c6e20375
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9

Hackenberg, P., Tutty, O. R. and Nelson, P. A. (1994) Numerical studies of the automatic control of Boundary-Layer transition via multiple suction panels. AIAA Fluid Dynamics Conference, 1994, , Colorado Springs, United States. 20 - 23 Jun 1994.

Record type: Conference or Workshop Item (Paper)

Abstract

A numerical algorithm is introduced for the optimization of the suction distribution to maintain transition at a desired position for a flow over a flat plate with a smooth two-dimensional hump and an array of suction panels. The computation consists of the calculation of the interacting boundary-layer flow, the determination of the spatial growth rates of the disturbance waves, the prediction of the transition location via the eN-method and finally of the optimization of the suction flow rates using a modified least mean-squares algorithm. The optimization algorithm has been successfully applied to plates with two or four suction panels. The results show clearly that the pressure distribution has a highly significant effect on the optimum suction distribution over the plate. The numerical code shows its potential to be applied to laminar flow control aerofoils to determine the optimum suction distribution for given flight conditions.

This record has no associated files available for download.

More information

Published date: 23 June 1994
Additional Information: Publisher Copyright: © 1994 by the American Institute of Aeronautics and Astronautics, Inc. All right reserved. Paper number : AIAA 94-2214
Venue - Dates: AIAA Fluid Dynamics Conference, 1994, , Colorado Springs, United States, 1994-06-20 - 1994-06-23

Identifiers

Local EPrints ID: 468797
URI: http://eprints.soton.ac.uk/id/eprint/468797
PURE UUID: a84f837d-e9d3-4849-a9e5-3bae6892058b
ORCID for P. A. Nelson: ORCID iD orcid.org/0000-0002-9563-3235

Catalogue record

Date deposited: 25 Aug 2022 17:22
Last modified: 26 Aug 2022 01:32

Export record

Contributors

Author: P. Hackenberg
Author: O. R. Tutty
Author: P. A. Nelson ORCID iD

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.

×