On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction

Felix Diegelmann; Jan Matheis; Volker Tritschler; Stefan Hickel; Nikolaus Adams

On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction

Felix Diegelmann, Jan Matheis, Volker Tritschler, Stefan Hickel, Nikolaus Adams

Aerodynamics

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

Abstract

We present numerical simulations of a reacting shock-bubble interaction with detailed chemistry. The interaction of the Richtmyer-Meshkov instability (RMI) and shock-induced ignition of a stoichiometric H2-O2 gas mixture are investigated. Different initial pressures in the range of po = 0.25-0.75 atm at a constant shock wave Mach number of Ma = 2.30 trigger different reaction wave types (deflagration and detonation). Low pressure reactions are dominated by H, O, OH production and high pressure chemistry is driven by HO2 and H2O2. The reaction wave type is crucial for the spatial and temporal evolution of the bubble. The RMI and subsequent Kelvin Helmholtz instabilities show a high reaction sensitivity. Mixing is significantly reduced by both types of reaction waves, with detonation waves showing the strongest effect.

Original language	English
Title of host publication	9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015
Publisher	TSFP-9
Volume	1
ISBN (Electronic)	9780000000002
Publication status	Published - 1 Jan 2015
Event	9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 - Melbourne, Australia Duration: 30 Jun 2015 → 3 Jul 2015

Conference

Conference	9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015
Country/Territory	Australia
City	Melbourne
Period	30/06/15 → 3/07/15

Cite this

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title = "On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction",

abstract = "We present numerical simulations of a reacting shock-bubble interaction with detailed chemistry. The interaction of the Richtmyer-Meshkov instability (RMI) and shock-induced ignition of a stoichiometric H2-O2 gas mixture are investigated. Different initial pressures in the range of po = 0.25-0.75 atm at a constant shock wave Mach number of Ma = 2.30 trigger different reaction wave types (deflagration and detonation). Low pressure reactions are dominated by H, O, OH production and high pressure chemistry is driven by HO2 and H2O2. The reaction wave type is crucial for the spatial and temporal evolution of the bubble. The RMI and subsequent Kelvin Helmholtz instabilities show a high reaction sensitivity. Mixing is significantly reduced by both types of reaction waves, with detonation waves showing the strongest effect.",

author = "Felix Diegelmann and Jan Matheis and Volker Tritschler and Stefan Hickel and Nikolaus Adams",

year = "2015",

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day = "1",

language = "English",

volume = "1",

booktitle = "9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015",

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note = "9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015 ; Conference date: 30-06-2015 Through 03-07-2015",

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Diegelmann, F, Matheis, J, Tritschler, V, Hickel, S & Adams, N 2015, On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction. in 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015. vol. 1, TSFP-9, 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015, Melbourne, Australia, 30/06/15.

On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction. / Diegelmann, Felix; Matheis, Jan; Tritschler, Volker et al.
9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015. Vol. 1 TSFP-9, 2015.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction

AU - Diegelmann, Felix

AU - Matheis, Jan

AU - Tritschler, Volker

AU - Hickel, Stefan

AU - Adams, Nikolaus

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We present numerical simulations of a reacting shock-bubble interaction with detailed chemistry. The interaction of the Richtmyer-Meshkov instability (RMI) and shock-induced ignition of a stoichiometric H2-O2 gas mixture are investigated. Different initial pressures in the range of po = 0.25-0.75 atm at a constant shock wave Mach number of Ma = 2.30 trigger different reaction wave types (deflagration and detonation). Low pressure reactions are dominated by H, O, OH production and high pressure chemistry is driven by HO2 and H2O2. The reaction wave type is crucial for the spatial and temporal evolution of the bubble. The RMI and subsequent Kelvin Helmholtz instabilities show a high reaction sensitivity. Mixing is significantly reduced by both types of reaction waves, with detonation waves showing the strongest effect.

AB - We present numerical simulations of a reacting shock-bubble interaction with detailed chemistry. The interaction of the Richtmyer-Meshkov instability (RMI) and shock-induced ignition of a stoichiometric H2-O2 gas mixture are investigated. Different initial pressures in the range of po = 0.25-0.75 atm at a constant shock wave Mach number of Ma = 2.30 trigger different reaction wave types (deflagration and detonation). Low pressure reactions are dominated by H, O, OH production and high pressure chemistry is driven by HO2 and H2O2. The reaction wave type is crucial for the spatial and temporal evolution of the bubble. The RMI and subsequent Kelvin Helmholtz instabilities show a high reaction sensitivity. Mixing is significantly reduced by both types of reaction waves, with detonation waves showing the strongest effect.

UR - http://www.scopus.com/inward/record.url?scp=85034424264&partnerID=8YFLogxK

M3 - Conference contribution

VL - 1

BT - 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015

PB - TSFP-9

T2 - 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015

Y2 - 30 June 2015 through 3 July 2015

ER -

On the influence of pressure variation on ignition and mixing processes in a reacting shock-bubble interaction

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