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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 48 (1979), S. 85-95 
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Mit Hilfe der Variationsrechnung wird der Kollaps einer an einer festen Wand haftenden Blase analysiert. Durch numerische Rechnungen für verschiedene Werte des Randwinkels wird dessen Einfluß auf die Blasengestalt beim Kollaps untersucht. Es zeigt sich, daß sich bei Blasen mit einem Randwinkel α 〈 90 ° unabhängig vom Gasinhalt der Blase und von der Blasengröße ein auf die Wand gerichteter Flüssigkeitsstrahl bildet. Während die Blasengestalt nur wenig vom Gasinhalt abhängt, beeinflussen die Webersche Zahl und der Randwinkel die Gestalt der Blase erheblich.
    Notes: Summary The problem of the behavior of a bubble attached to a solid wall was solved numerically by the variational method, in which the viscosity and compressibility in the liquid are neglected. The effects of the surface tension and the contact angle on the collapsing bubble were taken into account. As a result, it was clarified that for the contact angle α 〈 90 ° the projecting part of liquid advancing against a solid wall was formed in the collapsing process regardless of the amount of gas in the bubble and the bubble size, and that the effects of the Weber number and the contact angle on the bubble shape were large, while the effect of amount of gas in the bubble was small.
    Type of Medium: Electronic Resource
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