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 :: Lexikon ::
Detail
Kavitation
Kategorie: Physik

[lat. cavitas "Hohlraum"]
Bildung von Gas- oder Dampfblasen in einer Flüssigkeit durch Schwankungen des Drucks. Die Kavitationsblasen entstehen meist infolge sich schnell bewegender oder drehender Objekte in fluiden Medien. Beim Implodieren der Kavitationsblasen entstehen hohe Druck- und Temperaturspitzen, die das Material schnell ermüden lassen. Auch wird das Strömungsverhalten negativ beeinflusst.

In manchen Bereichen erweist sich die Kavitation jedoch als nützlich. So z.B. bei der Lithotripsie (Nierensteinzertrümmerung mittels Ultraschalls) oder der Reinigung von Gegenständen (Ultraschallbad).

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