Efficiency of Energy Conversion in Underwater Spark Discharges and Associated Bubble Oscillations: Experimental Results

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F09%3A00153323" target="_blank" >RIV/68407700:21230/09:00153323 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24510/09:#0000260 RIV/46747885:24510/09:#0000138

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Efficiency of Energy Conversion in Underwater Spark Discharges and Associated Bubble Oscillations: Experimental Results

Popis výsledku v původním jazyce

Low-voltage high-energy spark discharges in water and associated bubble oscillations are studied experimentally. Pressure waves emitted during spark discharges and during following bubble oscillations have been recorded and analyzed to determine the radiated acoustic energy and potential energy of the bubbles.These energies are then used to determine the efficiency of energy conversion.Due to specific features of the low-voltage apparatus used, bubbles of different sizes have been generated and these bubbles were found to oscillate with different intensities.To explain this great diversity in the generated bubbles, the electrical circuit of the apparatus and the early stages of the spark discharge are analyzed. While it is confirmed that the bubble size grows with the energy used for discharge, the relation between the intensity of bubble oscillations and the circuit parameters is more complex.To explain this relation,two hypotheses,partly supported by the data available,are presented.

Název v anglickém jazyce

Efficiency of Energy Conversion in Underwater Spark Discharges and Associated Bubble Oscillations: Experimental Results

Popis výsledku anglicky

Low-voltage high-energy spark discharges in water and associated bubble oscillations are studied experimentally. Pressure waves emitted during spark discharges and during following bubble oscillations have been recorded and analyzed to determine the radiated acoustic energy and potential energy of the bubbles.These energies are then used to determine the efficiency of energy conversion.Due to specific features of the low-voltage apparatus used, bubbles of different sizes have been generated and these bubbles were found to oscillate with different intensities.To explain this great diversity in the generated bubbles, the electrical circuit of the apparatus and the early stages of the spark discharge are analyzed. While it is confirmed that the bubble size grows with the energy used for discharge, the relation between the intensity of bubble oscillations and the circuit parameters is more complex.To explain this relation,two hypotheses,partly supported by the data available,are presented.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

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Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

ACTA ACUSTICA UNITED WITH ACUSTICA

ISSN

1610-1928

e-ISSN

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Svazek periodika

95

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

14

Strana od-do

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Kód UT WoS článku

000264467800004

EID výsledku v databázi Scopus

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