Numerical investigation on three-dimensional shock train structures in rectangular isolators

Gnani, F., Zare-Behtash, H. , White, C. and Kontis, K. (2018) Numerical investigation on three-dimensional shock train structures in rectangular isolators. European Journal of Mechanics - B/Fluids, 72, pp. 586-593. (doi:10.1016/j.euromechflu.2018.07.018)

Gnani, F., Zare-Behtash, H. , White, C. and Kontis, K. (2018) Numerical investigation on three-dimensional shock train structures in rectangular isolators. European Journal of Mechanics - B/Fluids, 72, pp. 586-593. (doi:10.1016/j.euromechflu.2018.07.018)

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Abstract

The understanding of the formation of shock trains in high-speed engines is vital for the improvement of engine design. The formation of these flow structures in a narrow duct, driven by the presence of the viscous effects on the walls, is an extremely complex process that is not fully understood. This investigation demonstrates the high sensitivity of the shock train to the solving equations. The establishment of the shock train in the duct mainly depends on the way that the boundary layer develops on the walls. The - Wilcox model confirms to be the most suitable to accurately reproduce the subtle features close to the solid boundary. The assumption of two-dimensional flow is not completely accurate for describing internal flows where the three-dimensional effects from the shock wave/boundary layer interactions cannot be neglected. The centreline flow properties show that the first shock wave has the same strength in the two- and three-dimensional cases. However, in the three-dimensional case the thinner boundary layer behind the leading shock allows the flow to expand more in the subsonic region causing a stronger deceleration of the flow behind the first shock.

Item Type:Articles (Editorial)
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:White, Dr Craig and Kontis, Professor Konstantinos and Gnani, Francesca and Zare-Behtash, Dr Hossein
Authors: Gnani, F., Zare-Behtash, H., White, C., and Kontis, K.
Subjects:Q Science > Q Science (General)
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:European Journal of Mechanics - B/Fluids
Publisher:Elsevier
ISSN:0997-7546
ISSN (Online):1873-7390
Published Online:15 August 2018
Copyright Holders:Copyright © 2018 Elsevier Masson SAS
First Published:First published in European Journal of Mechanics - B/Fluids 72:586-593
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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