Comparison of three large-eddy simulations of shock-induced turbulent separation bubbles
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).
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Description/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.
| Item Type: | Article |
|---|---|
| ISSNs: | 1432-2153 (print) |
| Related URLs: | |
| Keywords: | shock boundary layer interaction, les, low-frequency unsteadiness, separation bubble |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences > Aerodynamics & Flight Mechanics |
| Item ID: | 69789 |
| Date Deposited: | 03 Dec 2009 |
| Last Modified: | 01 Jun 2011 17:28 |
| Contributors: | Touber, Emile (Author) Sandham, Neil D. (Author) |
| Date: | December 2009 |
| Status: | Published |
| Contact Email Address: | n.sandham@soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/69789 |
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