Optimization based control of boundary layer transition: Theory and experimentation
Optimization based control of boundary layer transition: Theory and experimentation
Summary form only given. The use of suction to reduce the drag force on an aircraft will, of course, only be worth doing if the energy saved is greater than the energy required to drive the suction system. In particular, it is possible to suck too hard and hence the suction system consumes more energy than it saves. Hence if we wish to achieve a specified transition position (dictated by the aerodynamics of the implementation) we must seek the suction distribution which achieves the desired result for the minimum energy cost. Also it is highly desirable not just to show an energy profit but to maximize it. Given these requirements, the route to design is obviously via an appropriately formulated nonlinear constrained optimization problem and in the work to-date we have used a number of methods of solving such problems, namely gradient descent based algorithms, genetic algorithms, simulated annealing. In this presentation, we will cover the following aspects; background and problem formulation; solution algorithms and relative performance comparisons; experimental facilities and comparisons of predicted and measured performance; and on-going research
Drag reduction, laminar to turbulent transitions, Aircraft Control, flow instability
6/1-6/2
McCormack, W.
ea5cfcb5-0604-42ed-8676-02c3fc71c5ac
Tutty, O. R.
c9ba0b98-4790-4a72-b5b7-09c1c6e20375
Rogers, E.
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Nelson, P. A.
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10 November 1998
McCormack, W.
ea5cfcb5-0604-42ed-8676-02c3fc71c5ac
Tutty, O. R.
c9ba0b98-4790-4a72-b5b7-09c1c6e20375
Rogers, E.
611b1de0-c505-472e-a03f-c5294c63bb72
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
McCormack, W., Tutty, O. R., Rogers, E. and Nelson, P. A.
(1998)
Optimization based control of boundary layer transition: Theory and experimentation.
IEE Colloquium (Digest), 1998 (521), .
Abstract
Summary form only given. The use of suction to reduce the drag force on an aircraft will, of course, only be worth doing if the energy saved is greater than the energy required to drive the suction system. In particular, it is possible to suck too hard and hence the suction system consumes more energy than it saves. Hence if we wish to achieve a specified transition position (dictated by the aerodynamics of the implementation) we must seek the suction distribution which achieves the desired result for the minimum energy cost. Also it is highly desirable not just to show an energy profit but to maximize it. Given these requirements, the route to design is obviously via an appropriately formulated nonlinear constrained optimization problem and in the work to-date we have used a number of methods of solving such problems, namely gradient descent based algorithms, genetic algorithms, simulated annealing. In this presentation, we will cover the following aspects; background and problem formulation; solution algorithms and relative performance comparisons; experimental facilities and comparisons of predicted and measured performance; and on-going research
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Published date: 10 November 1998
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Proceedings of IEE Colloquium on Optimisation in Control: Methods and Applications, 1998-01-01
Keywords:
Drag reduction, laminar to turbulent transitions, Aircraft Control, flow instability
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Local EPrints ID: 468776
URI: http://eprints.soton.ac.uk/id/eprint/468776
ISSN: 0963-3308
PURE UUID: dace367f-b70e-478e-9bea-ac6e65056589
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Date deposited: 25 Aug 2022 17:13
Last modified: 23 Feb 2023 02:34
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Author:
W. McCormack
Author:
O. R. Tutty
Author:
E. Rogers
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