Dynamics of a single bubble with a chemically active gas

Vasiléev, A. A.; Kedrinskii, V. K.; Taratuta, S. P.

doi:10.1007/bf02672825

Cited by 5 publications

(1 citation statement)

References 1 publication

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“…It is known that the reaction can proceed in various regimes. However, over the last decade the studies of the formation and interaction of bubble detonation waves [64][65][66][67][68][69][70][71][72] and different approaches to the determination of its propagation velocity [68][69][70] were lacking detailed analysis of the dynamics of a single bubble. It was assumed a priori that a reactive gas mixture in bubbles exploded when they were compressed to a certain degree.…”

Section: Reactive Bubble Media Waves Of Bubble Detonationmentioning

confidence: 99%

Shock Waves in Bubbly Media

Hydrodynamics of Explosion

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Section: Reactive Bubble Media Waves Of Bubble Detonationmentioning

confidence: 99%

Shock Waves in Bubbly Media

Hydrodynamics of Explosion

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Dynamics of a single bubble in a liquid in the presence of chemical reactions and interphase heat and mass exchange

Kedrinskii¹,

Fomin²,

Taratuta³

1999

J Appl Mech Tech Phys

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As is known [1, 2], detonation of bubble media can be related to heat-and mass-transfer processes, whose rate increase markedly with development of instability of the bubble surface, which leads to formation of microdrops in them [3]. Evaporation of microdrops has a significant effect on the gas-phase chemical reaction in the bubble. Moreover, in a system where the fuel and oxidizer are in different phases [1], formation of a detonation wave is impossible without interphase heat and mass exchange, which leads to formation of a chemically reactive mixture." The detonation regime of the reactions in bubbles was studied in [4].In the present work, as the first stage in the development of an adequate model for bubble detonation in such media, we consider the influence of inert and chemically reactive additives in the active gas mixture of a bubble on bubble dynamics and explosive process, and reaction propagation during formation of the mixture.The dependences of the parameters of a single bubble on the time of injection tinj, the initial dimensions of microdrops Do, and the mass of evaporated liquid Mr~ are analyzed in the case of instantaneous evaporation of microdrops and with allowance for evaporation dynamics.Bubble dynamics is described by the Rayleigh equation under the assumption that the bubble retains its spherical shape, and the gas is ideal: 3 i ~fl" + 5 ~ = P -P~o.Here ~ = R/Ro is the dimensionless radius of the bubble, fl~ and/~" are the derivatives of fl with respect to dimensionless time r = (~L/Ro)t (PL is the liquid density and t is time), R and R0 are the current the and initial radii of the bubble, P~o is the external pressure referred to the initial pressure/9o, and P is given by the following relation, which takes into account losses in acoustic radiation of the bubble:

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Shock wave generation by collapse of an explosive bubble in water

Ishii

Watanabe

2019

Proceedings of the Combustion Institute

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Dynamics of a single bubble with a chemically active gas

Cited by 5 publications

References 1 publication

Shock Waves in Bubbly Media

Shock Waves in Bubbly Media

Dynamics of a single bubble in a liquid in the presence of chemical reactions and interphase heat and mass exchange

Shock wave generation by collapse of an explosive bubble in water

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