Loupy, G. and Barakos, G.N. (2017) Modelling of Transonic Shallow Cavity Flows, and Store Release Simulations from Weapon Bays. In: 2017 AIAA Aviation Forum, Denver, CO, USA, 05-09 Jun 2017, ISBN 9781624105012 (doi: 10.2514/6.2017-3252)
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Abstract
This paper aims to obtain more insight in the physics of cavit y flows. CFD results are analysed using a superposition of refle cted acoustic waves driven by the cavity flow showing clearly the r elative amplitude, and the time modulation of cavity tones. The tona l, and a part of the broadband noise, is found to be driven by the turb u- lent length scales, disabling the phase superposition of th e smaller wavelength. This can be seen as a way to complement the estab- lished Rossiter formula. In addition Scale-Adaptive Simul ations of store release from weapon bays using overset grids are prese nted. A six-degree-of-freedom model is coupled with the HMB3 flow so lver, and store release simulations are performed for a finned stor e inside an idealised bay. It is found that the trajectories of stores released from the cavities are affected by the mean flow field, the standin g waves, and the dynamics of the shear layer formed along the ca vity opening.
Item Type: | Conference Proceedings |
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Additional Information: | The financial support of MBDA UK Ltd is gratefully acknowledged. Th e use of the EPSRC funded ARCHIE-WeSt High Performance Computer (E PSRC grant no. EP/K000586/1) is also gratefully acknowledged. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Barakos, Professor George and Loupy, Gaëtan |
Authors: | Loupy, G., and Barakos, G.N. |
College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
ISBN: | 9781624105012 |
Copyright Holders: | Copyright © 2017 The Authors |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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