Petrocchi, A., Mauriello, M. and Barakos, G. (2023) Transonic buffet alleviation via virtual control surfaces. Aerospace Science and Technology, 140, 108478. (doi: 10.1016/j.ast.2023.108478)
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Abstract
In this work, computational fluid dynamics simulations are carried out to assess the ability of control surfaces to alleviate or suppress transonic buffet. Among the available control surfaces, upper trailing edge flaps were considered since they modify the aerofoil pressure distribution and fix the shock at an upstream position. Spoilers were also studied as they produce a similar effect by interfering with the pressure disturbance propagation in the boundary layer and prevent buffet. For both devices, the sensitivities to geometric parameters are studied. The effectiveness of these buffet control methods is first assessed for 2D computations around different wing sections. As spoilers were considered more effective, results on a 3D configuration are provided to discuss the influence of finite-span devices on aerodynamic performance. In addition, a simple model accounting for changes in the flight Mach number together with the spoiler is presented to simulate a simple flight scenario and provide an effective strategy for buffet suppression. In the framework of numerical investigations, the adoption of virtual control surfaces allows for avoiding difficulties associated with the modelling of slotted and deployable devices.
| Item Type: | Articles |
|---|---|
| Additional Information: | The present work is supported by the TEAMAero European project No. 860909 - Towards Effective Flow Control and Mitigation of Shock Effects In Aeronautical Applications. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Barakos, Professor George and Petrocchi, Mr Andrea |
| Authors: | Petrocchi, A., Mauriello, M., and Barakos, G. |
| College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
| Journal Name: | Aerospace Science and Technology |
| Publisher: | Elsevier |
| ISSN: | 1270-9638 |
| ISSN (Online): | 1626-3219 |
| Published Online: | 26 June 2023 |
| Copyright Holders: | Copyright © 2023 The Authors |
| First Published: | First published in Aerospace Science and Technology 140: 108478 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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