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Zum Verhalten kugelförmiger, lasererzeugter Kavitationsblasen in Wasser

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Spherical laser-produced cavitation bubbles in water are investigated by high frequency holo-cinematographical methods. The experimental results are compared with Gilmore's theory of spherical cavities. Bubble-wall motion as well as velocity and pressure fields in the liquid are numerically computed for the experimental conditions. The strong damping of the bubble oscillation observed after the first collapse is explained by sound radiation. A simple model is given for bubble formation during laser breakdown.

Zusammenfassung

Kugelförmige, lasererzeugte Kavitationsblasen in Wasser werden hochfrequenzholografisch untersucht. Die experimentellen Beobachtungen werden mit der Gilmoreschen Theorie kugelförmiger Blasen verglichen. Blasen wand verlauf sowie Geschwindigkeit und Druck in der umgebenden Flüssigkeit werden für die experimentellen Verhältnisse numerisch berechnet. Die beobachtete starke Dämpfung der Blasenschwingung nach dem ersten Kollaps wird durch Schallabstrahlung erklärt. Für die Blasenentstehung beim Laserdurchschlag wird ein einfaches Modell angegeben.

Sommaire

On a étudié ces bulles par holographie à haute fréquence. Les observations sont comparées avec les prévisions de la théorie de Gilmore. On a calculé numériquement le comportement des parois des bulles ainsi que la vitesse et la pression dans le liquide avoisinant, aux conditions d'observation. Le fort amortissement des oscillations des bulles après le premier collapsus s'explique par leur rayonnement sonore. Un modèle simple explique la formation des bulles par passage du rayon laser.
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Document Type: Research Article

Publication date: August 1, 1978

More about this publication?
  • 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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