Název: Dynamics of cavitation induced by focused tandem shock waves in water
Autoři: Hoffer, Petr ; Šunka, Pavel ; Lukeš, Petr
Typ dokumentu: Příspěvky z konference
Konference/Akce: WDS 2011 - Annual Conference of Doctoral Students /20./, Prague (CZ), 2011-05-31 / 2011-06-03
Rok: 2011
Jazyk: eng
Abstrakt: Cavitation associated with the generation of shock waves in water was examined. To study these processes, a tandem shock wave generator, which generates two cylindrical pressure waves focused by a metallic parabolic reflector to a common focal region, was developed. The temporal evolution of cavitation generated by shock waves at the focal region was determined experimentally using high-temporal-resolution microphotography for a certain time delay between the first and second shock waves. Observation of the focal area also showed jetting cavitation bubbles with diameters of 100 m without presence of any rigid boundary. A theoretical model that provides analytical expressions for the temporal evolution of the pressure inside the cavitation bubbles and parameters of the pressure waveform of the second shock wave at the focal area was used to improve the same measurement by PVDF sensor gauges. On the basis of this model, the amplitudes of the compression and rarefaction parts
Klíčová slova: cavitation bubble; Rayleigh-Plesset equation; shock wave
Číslo projektu: CEZ:AV0Z20430508 (CEP), GA202/09/1151 (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: WDS’11 Proceedings of Contributed Papers: Part II: Physics of Plasmas and Ionized Media, ISBN 978-80-7378-185-9

Instituce: Ústav fyziky plazmatu AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0209210

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-112734


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky plazmatu
Konferenční materiály > Příspěvky z konference