Peter Pipp (Avtor), Marko Hočevar (Avtor), Matevž Dular (Avtor)

Povzetek

Recently the development of Kelvin-Helmholtz instability in cavitating flow in Venturi microchannels was discovered. Its importance is not negligible, as it destabilizes the shear layer and promotes instabilities and turbulent eddies formation in the vapor region, having low density and momentum. In the present paper, we give a very brief summary of the experimental findings and in the following, we use a computational fluid dynamics (CFD) study to peek deeper into the onset of the Kelvin-Helmholtz instability and its effect on the dynamics of the cavitation cloud shedding. Finally, it is shown that Kelvin-Helmholtz instability is beside the re-entrant jet and the condensation shock wave the third mechanism of cavitation cloud shedding in Venturi microchannels. The shedding process is quasi-periodic.

Ključne besede

kavitacija;Kelvin-Helmholtzova nestabilnost;mikro kanali;numerične simulacije;cavitation;Kelvin-Helmholtz instability;microchannel;numerical simulation;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 519.876.5:532.528(045)
COBISS: 56979971 Povezava se bo odprla v novem oknu
ISSN: 2076-3417
Matična publikacija: Applied sciences
Št. ogledov: 334
Št. prenosov: 145
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: kavitacija;Kelvin-Helmholtzova nestabilnost;mikrokanali;numerične simulacije;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-12
Letnik: ǂVol. ǂ11
Zvezek: ǂiss. ǂ6
Čas izdaje: Mar. 2021
DOI: 10.3390/app11062644
ID: 12717710