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Single bubble ignition after shock wave impact

  • High-speed photography was applied to investigate the explosive behavior of bubble-containing systems of the type organic solvent---gaseous oxidizing agent. Knowledge about the explosive behavior of such systems is of great importance, for example, for the safe operation of chemical reactors in oxidation processes in the liquid phase. Examples of the complex dynamical reaction of bubbles are elucidated where bubble-containing liquids were subjected to the impact of shockwaves. The different stages of the shock-induced explosive behavior of oxygen and oxygen plus inert gas bubbles were studied experimentally and theoretically mainly in liquid cyclohexane. Other solvents, such as cumene and 2-ethylhexanal, have been found to show that shock-induced bubble explosions can occur even if the gas phase of the bubble is not in the explosive range before impact. Tue influence of different parameters on the bubble Explosion process, such as the composition of the bubbles and the initialHigh-speed photography was applied to investigate the explosive behavior of bubble-containing systems of the type organic solvent---gaseous oxidizing agent. Knowledge about the explosive behavior of such systems is of great importance, for example, for the safe operation of chemical reactors in oxidation processes in the liquid phase. Examples of the complex dynamical reaction of bubbles are elucidated where bubble-containing liquids were subjected to the impact of shockwaves. The different stages of the shock-induced explosive behavior of oxygen and oxygen plus inert gas bubbles were studied experimentally and theoretically mainly in liquid cyclohexane. Other solvents, such as cumene and 2-ethylhexanal, have been found to show that shock-induced bubble explosions can occur even if the gas phase of the bubble is not in the explosive range before impact. Tue influence of different parameters on the bubble Explosion process, such as the composition of the bubbles and the initial pressure, was investigated. Limiting conditions for bubble explosions were determined. In addition to the behavior of individual bubbles, the interaction of exploding bubbles with one another was observed, which provides information on the Propagation mechanism of self-sustaining bubble-detonation waves. The results are important for the safety assessment of the explosion risks in corresponding two-phase systems.zeige mehrzeige weniger

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  • Hieronymus_Single Bubble Ignition After Shock Wave Impact.pdf
    eng
  • The Micro-World Observed by Ultra High-Speed Cameras.pdf
    eng

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Metadaten
Autor*innen:Hartmut Hiernoymus
Persönliche Herausgeber*innen:K. Tsuji
Dokumenttyp:Buchkapitel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):The Micro-World Observed by Ultra High-Speed Cameras
Jahr der Erstveröffentlichung:2017
Herausgeber (Institution):Shimadzu Europa GmbH
Verlag:Springer
Verlagsort:Cham, Switzerland
Erste Seite:303
Letzte Seite:317
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Bubbles; Explosion; Heterogeneous systems; Oxidation processes
DOI:10.1007/978-3-319-61491-5
ISBN:978-3-319-61490-8
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:09.10.2017
Referierte Publikation:Nein
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