Modelling of Transonic Shallow Cavity Flows, and Store Release Simulations from Weapon Bays

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)

[img]
Preview
Text
138995.pdf - Accepted Version

2MB

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
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 > Aerospace Sciences
ISBN:9781624105012
Copyright Holders:Copyright © 2017 The Authors
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

University Staff: Request a correction | Enlighten Editors: Update this record