An apparatus for generating reproducible and scalable shock waves in the free field

  • A simple test bench was set up on the BAM test site to investigate shock waves caused by gas detonations. The aim was to build a simple mobile test bench that can be used for various applications, to demonstrate the vaildity and for comparison with other test benches. For this purpose a balloon filled with acetylene and oxygen at atmospheric pressure with an electric ignitor was used. The characteristics of the shock waves can be scaled via the gaseous mixture, the filling quantity of the balloon and the distance to the sensors. Pressure sensors were set up around the balloon at various distances to measure the shock. With the help of the high-speed recordings and the Rankine Hugoniot equations, the shock front pressure was estimated and compared with the results of the pressure sensors. In order to validate the results of this test bench, they were compared with an experiment using plastic explosive no. 4 . These agreed well with the results. Overall,A simple test bench was set up on the BAM test site to investigate shock waves caused by gas detonations. The aim was to build a simple mobile test bench that can be used for various applications, to demonstrate the vaildity and for comparison with other test benches. For this purpose a balloon filled with acetylene and oxygen at atmospheric pressure with an electric ignitor was used. The characteristics of the shock waves can be scaled via the gaseous mixture, the filling quantity of the balloon and the distance to the sensors. Pressure sensors were set up around the balloon at various distances to measure the shock. With the help of the high-speed recordings and the Rankine Hugoniot equations, the shock front pressure was estimated and compared with the results of the pressure sensors. In order to validate the results of this test bench, they were compared with an experiment using plastic explosive no. 4 . These agreed well with the results. Overall, symmetrical undisturbed scalable shock waves can be generated with the setup. Only the reproducibility, which is comparatively poor to open shock tubes due to the influence of wind, had to be improved.zeige mehrzeige weniger

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Autor*innen:Marco Gerbeit
Koautor*innen:Henrik Seeber, Dennis Grasse, Marcel Donner, Daniel Krentel
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2025
Organisationseinheit der BAM:2 Prozess- und Anlagensicherheit
2 Prozess- und Anlagensicherheit / 2.1 Sicherheit von Energieträgern
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Technik, Medizin, angewandte Wissenschaften / Chemische Verfahrenstechnik / Chemische Verfahrenstechnik
Freie Schlagwörter:BOS; Gas detonation; Shock waves
Themenfelder/Aktivitätsfelder der BAM:Chemie und Prozesstechnik
Chemie und Prozesstechnik / Anlagensicherheit und Prozesssimulation
Infrastruktur
Infrastruktur / Security
Veranstaltung:35th International Symposium on Shock Waves (ISSW35)
Veranstaltungsort:Brisbane, Australia
Beginndatum der Veranstaltung:07.07.2025
Enddatum der Veranstaltung:11.07.2025
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:25.07.2025
Referierte Publikation:Nein
Eingeladener Vortrag (wissenschaftliche Konferenzen):Nein
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