Abstract
This paper presents a numerical study of a single-shocked turbulent mixing layer using high-order accurate implicit large-eddy simulations (ILES) for low- and high-amplitude (linear and non-linear) perturbations and for a reshocked turbulent layer. It investigates the differences in flow physics between these three cases, examining a recent proposition that single-shocked high-amplitude initial perturbations can be employed to model a reshocked turbulent layer. At early times, the shocked high-amplitude perturbation has high levels of mixing; however, at later times, it grows in an almost identical manner to the low-amplitude case. Despite exploration of several choices of scaling to map the reshocked results to the single-shocked study, a satisfactory agreement could not be reached and mixing parameters remain disparate. The conclusion is that a single-shock interaction with a high-amplitude perturbation is not a good representation of reshock of a turbulent mixing layer.
Original language | English |
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Pages (from-to) | 1-17 |
Number of pages | 17 |
Journal | Journal of Turbulence |
Volume | 13 |
DOIs | |
Publication status | Published - 1 Dec 2012 |
Keywords
- Implicit large eddy simulation
- Mixing
- Richtmyer-Meshkov instability
- Turbulent