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Stoßwellen und Kompressionsring

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Spark discharges in thin layers of liquid can produce compression areas, that are stable for more than 100 μs. Examinations with X-ray flashes, piezoelectric pressure indicators and laser-“Schlieren”-optics show, that the reason is an interaction of shock-waves. An attempt is made to explain the experimental results and build-up of compression areas, that expand and vanish very slowly.


Beim Funkendurchschlag in dünnen Flüssigkeitsschichten können Kompressionsbereiche gebildet werden, die für mehr als 100 μs stabil sind. Ursache ist Stoßwellenwechselwirkung, wie Untersuchungen mit Röntgenblitzen, piezoelektrischen Druckaufnehmern und Laser-Schlierenoptik zeigen. Aufgrund der experimentellen Befunde wird ein Ansatz zur Erklärung der Bildung und Stabilität von diesen Kompressionsbereichen entwickelt, die sich nur sehr langsam ausdehnen und auflösen.


En faisant éclater une étincelle à travers une couche liquide mince, on peut y créer un domaine de compression qui restera stable durant plus de cent microsecondes. La cause en sont les interactions d'ondes de choc, comme on a pu le montrer par divers procédés d'observation tels que: éclairs de rayons X, capteurs piézoélectriques et clichés Schlieren par laser. Les résultats de ces expériences ont fourni les éléments d'une tentative d'explication théorique de la formation et de la stabilité de ces anneaux de compression qui se développent avec une lenteur remarquable avant de disparaître.
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Document Type: Research Article

Publication date: 01 July 1979

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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