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Dinamika superkavitacije in možnost umestitve hladne plazme v njej
ID Kočoski, Aleksandar (Author), ID Dular, Matevž (Mentor) More about this mentor... This link opens in a new window, ID Petkovšek, Martin (Comentor)

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Abstract
Izven obsega negativnih učinkov, mikavnost spreobrnitve kavitirajočih tokov v koristne procese še naprej sproža nešteto radovednih prizadevanj. Eno teh sloni na hipotezi, da je v dovolj velikem in stabilnem superkavitacijskem mehurju možno vzdrževati razelektritve nizkotlačne hladne plazme, katere protimikrobne lastnosti predstavljajo izvirno metodo inaktivacije patogenov v kapljevinah. Pričujoče magistrsko delo obsega ekstenzivno eksperimentalno delo, v katerem je z načrtovanjem eksperimentov vzpostavljen in optimiziran stabilen mehur. Zgledi rezultatov kvalitativne vizualizacije ilustrirajo pojav, ki je dodatno kvantitativno obravnavan z metodologijo odzivnih površin za podrobnejšo pojasnitev dinamike superkavitacije. Predstavljena so prva opazovanja z implementacijo plazme v superkavitacijo take velikosti, izvedene so pilotne meritve generirane koncentracije vodikovega peroksida in podani so razmisleki za nadaljnje raziskave.

Language:Slovenian
Keywords:superkavitacija, zožitev tipa Venturi, kavitacijsko število, načrtovanje eksperimentov, metodologija odzivnih površin, visokohitrostna vizualizacija, nizkotlačna hladna plazma, inaktivacija bakterij in virusov
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[A. Kočoski]
Year:2023
Number of pages:XXVI, 104 str.
PID:20.500.12556/RUL-151297 This link opens in a new window
UDC:532.528:531.3(043.2)
COBISS.SI-ID:169601539 This link opens in a new window
Publication date in RUL:04.10.2023
Views:1601
Downloads:479
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Secondary language

Language:English
Title:The dynamics of supercavitation and the possibility of incorporating cold plasma inside it
Abstract:
Beyond the scope of negative effects, the allure of converting cavitating flows into useful processes continues to spark a myriad of curious pursuits. One of these is based on the hypothesis that in a sufficiently large and stable supercavitation bubble it is possible to maintain low-pressure cold plasma discharges, whose antimicrobial properties present a novel method of inactivating pathogens in liquids. This master’s thesis comprises extensive experimental work in which a stable bubble is achieved and optimised through design of experiments. Exemplary results of qualitative visualization illustrate the phenomenon, which is additionally quantitatively addressed employing the response surface methodology, elucidating in further detail the dynamics of supercavitation. The first observations with the implementation of plasma in supercavitation of such size are presented, pilot measurements of the generated hydrogen peroxide concentration are conducted and considerations for further research are laid out.

Keywords:supercavitation, Venturi type constriction, cavitation number, design of experiments, response surface methodology, high-speed visualization, low-pressure cold plasma, inactivation of bacteria and viruses

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