Numerical simulations of high-speed turbulent cavity flows

Barakos, G. N., Lawson, S. J., Steijl, R. and Nayyar, P. (2001) Numerical simulations of high-speed turbulent cavity flows. Flow, Turbulence and Combustion, 83(4), pp. 569-585. (doi:10.1007/s10494-009-9207-1)

Full text not currently available from Enlighten.

Abstract

Detached-Eddy Simulations (DES) of flows over clean and controlled cavities with and without doors are presented in this paper. Mach and Reynolds numbers (based on cavity length) were 0.85 and one million respectively. Spectral analyses showed that the DES computations were able to correctly predict the frequencies of the Rossiter modes for both uncontrolled and controlled cases. Flow visualisations revealed that the impact of the shear layer formed along the cavity on a slanted aft wall no longer creates a large source of acoustic noise. Therefore little acoustic propagation was seen up the cavity. This was confirmed by the analysis of the cavity wall forces, which showed that the oscillations of the shear layer were reduced when the wall was slanted. This aided in reducing the overall Sound Pressure Levels throughout the cavity and far-field. Comparisons of the flow-fields suggested that the addition of the doors also aided in stabilising the shear layer, which was also shown in the analysis of the wall forces. As a result, the addition of the doors was found to affect the clean cavity configuration significantly more than the controlled one.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barakos, Professor George and Steijl, Dr Rene
Authors: Barakos, G. N., Lawson, S. J., Steijl, R., and Nayyar, P.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Flow, Turbulence and Combustion
Publisher:Springer Netherlands
ISSN:1386-6184
ISSN (Online):1573-1987

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

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
397141High performance computing for high fidelity, multi-disciplinary analysis of flow in weapon bays including store releaseGeorge BarakosEngineering & Physical Sciences Research Council (EPSRC)EP/C533380/1ENG - AEROSPACE SCIENCES