Experimental study of strong pressure pulses radiated by oscillating spark bubbles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24510%2F09%3A%230000248" target="_blank" >RIV/46747885:24510/09:#0000248 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental study of strong pressure pulses radiated by oscillating spark bubbles

Popis výsledku v původním jazyce

Pressure pulses radiated by spark generated bubbles are examined with an aim to determine whether shock fronts developed in them. A rise time of a leading edge of the pressure pulse is used as a suitable indicator of the shock front presence. Only pressure pulses radiated by bubbles having maximum radii of approximately 45 mm are considered. It has been found that for moderate intensities of bubble oscillations no shock fronts developed in the pressure pulses. However, if the bubbles oscillate with a sufficiently high intensity the rise time becomes as short as 1us, indicating that the limits given by the hydrophone are reached. The procedure used in this study does not allow determining if the pressure pulse deformation is due to finite amplitude waveeffects or due to shock front presence. To resolve thi question new experiments are being prepared.

Název v anglickém jazyce

Experimental study of strong pressure pulses radiated by oscillating spark bubbles

Popis výsledku anglicky

Pressure pulses radiated by spark generated bubbles are examined with an aim to determine whether shock fronts developed in them. A rise time of a leading edge of the pressure pulse is used as a suitable indicator of the shock front presence. Only pressure pulses radiated by bubbles having maximum radii of approximately 45 mm are considered. It has been found that for moderate intensities of bubble oscillations no shock fronts developed in the pressure pulses. However, if the bubbles oscillate with a sufficiently high intensity the rise time becomes as short as 1us, indicating that the limits given by the hydrophone are reached. The procedure used in this study does not allow determining if the pressure pulse deformation is due to finite amplitude waveeffects or due to shock front presence. To resolve thi question new experiments are being prepared.

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

78, Akustrický seminář

ISBN

9788001043455

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

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Název nakladatele

České vysoké učení technické v Praze, Česká akustická společnost

Místo vydání

Praha

Místo konání akce

Železná Ruda, Czech republic

Datum konání akce

1. 1. 2009

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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