The University of Southampton
University of Southampton Institutional Repository

Comparison of three large-eddy simulations of shock-induced turbulent separation bubbles

Comparison of three large-eddy simulations of shock-induced turbulent separation bubbles
Comparison of three large-eddy simulations of shock-induced turbulent separation bubbles
Three different large-eddy simulation investigations of the interaction between an impinging oblique shock and a supersonic turbulent boundary layer are presented. All simulations made use of the same inflow technique, specifically aimed at avoiding possible low-frequency interferences with the shock/boundary-layer interaction system. All simulations were run on relatively wide computational domains and integrated over times greater than twenty five times the period of the most commonly reported low-frequency shock oscillation, making comparisons at both time-averaged and low-frequency-dynamic levels possible. The results confirm previous experimental results which suggested a simple linear relation between the interaction length and the obliqueshock strength if scaled using the boundary-layer thickness and wall-shear stress. All the tested cases show evidences of significant low-frequency shock motions. At the wall, energetic low-frequency pressure fluctuations are observed, mainly in the initial part of interaction.
shock boundary layer interaction, les, low-frequency unsteadiness, separation bubble
1432-2153
469-478
Touber, Emile
0d715527-5254-488a-8ad2-a4829eb89936
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97
Touber, Emile
0d715527-5254-488a-8ad2-a4829eb89936
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97

Touber, Emile and Sandham, Neil D. (2009) Comparison of three large-eddy simulations of shock-induced turbulent separation bubbles. Shock Waves, 19 (6), 469-478. (doi:10.1007/s00193-009-0222-x).

Record type: Article

Abstract

Three different large-eddy simulation investigations of the interaction between an impinging oblique shock and a supersonic turbulent boundary layer are presented. All simulations made use of the same inflow technique, specifically aimed at avoiding possible low-frequency interferences with the shock/boundary-layer interaction system. All simulations were run on relatively wide computational domains and integrated over times greater than twenty five times the period of the most commonly reported low-frequency shock oscillation, making comparisons at both time-averaged and low-frequency-dynamic levels possible. The results confirm previous experimental results which suggested a simple linear relation between the interaction length and the obliqueshock strength if scaled using the boundary-layer thickness and wall-shear stress. All the tested cases show evidences of significant low-frequency shock motions. At the wall, energetic low-frequency pressure fluctuations are observed, mainly in the initial part of interaction.

This record has no associated files available for download.

More information

Submitted date: December 2009
Published date: December 2009
Keywords: shock boundary layer interaction, les, low-frequency unsteadiness, separation bubble
Organisations: Aerodynamics & Flight Mechanics

Identifiers

Local EPrints ID: 69789
URI: http://eprints.soton.ac.uk/id/eprint/69789
ISSN: 1432-2153
PURE UUID: c8ec8c25-2ee1-413f-8c5c-cd3a1e74a8f8
ORCID for Neil D. Sandham: ORCID iD orcid.org/0000-0002-5107-0944

Catalogue record

Date deposited: 03 Dec 2009
Last modified: 14 Mar 2024 02:42

Export record

Altmetrics

Contributors

Author: Emile Touber
Author: Neil D. Sandham ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×