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
Y1 - 2015
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
AN - SCOPUS:85034424264
T3 - 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015
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 -