Abstract
Secondary small-scale Kelvin-Helmholtz instability, developing along the Mach reflection slip-stream, was investigated. This instability is the cause for thickening the slipstream.
Growth rates of the large-scale Kelvin-Helmholtz shear flow instability are used to model the evolution of the slip-stream instability in ideal gas. The model is validated through experiments measuring the instability growth rates for a range of Mach numbers and reflecting wedge angles. Good agreement is found for Reynolds numbers of Re > 2 × 104 This work demonstrates, for the first time, the use of large-scale models of the Kelvin-Helmholtz instability in modeling secondary turbulent mixing in hydrodynamic flows, a methodology which could be further implemented in many important secondary mixing processes
Original language | English |
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Title of host publication | Shock Waves |
Subtitle of host publication | 26th International Symposium on Shock Waves, Volume 2 |
Editors | K. Hannemann , F. Seiler |
Publisher | Springer Berlin Heidelberg |
Pages | 1347-1352 |
Number of pages | 6 |
ISBN (Electronic) | 9783540851813 |
ISBN (Print) | 9783540851806 |
DOIs | |
State | Published - Mar 2009 |