A secondary small-scale turbulent mixing phenomenon induced by shock-wave Mach-reflection slip-stream instability

A Rikanati; O Sadot; G Ben-Dor; D Shvarts; T Kuribayashi; K Takayama

doi:https://doi.org/10.1007/978-3-540-85181-3_89

A secondary small-scale turbulent mixing phenomenon induced by shock-wave Mach-reflection slip-stream instability

A Rikanati, O Sadot, G Ben-Dor, D Shvarts, T Kuribayashi, K Takayama

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

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
Title of host publication	Shock Waves
Editors	K. Hannemann , F. Seiler
Publisher	Springer
Pages	1347-1352
Number of pages	6
ISBN (Electronic)	978-3-540-85181-3
ISBN (Print)	978-3-540-85180-6
DOIs	https://doi.org/10.1007/978-3-540-85181-3_89
State	Published - 2009

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title = "A secondary small-scale turbulent mixing phenomenon induced by shock-wave Mach-reflection slip-stream instability",

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",

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T1 - A secondary small-scale turbulent mixing phenomenon induced by shock-wave Mach-reflection slip-stream instability

AU - Rikanati, A

AU - Sadot, O

AU - Ben-Dor, G

AU - Shvarts, D

AU - Kuribayashi, T

AU - Takayama, K

PY - 2009

Y1 - 2009

N2 - 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

AB - 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

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SN - 978-3-540-85180-6

SP - 1347

EP - 1352

BT - Shock Waves

A2 - Hannemann , K.

A2 - Seiler, F.

PB - Springer

ER -

A secondary small-scale turbulent mixing phenomenon induced by shock-wave Mach-reflection slip-stream instability

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