Vid Agrež (Avtor), Žiga Lokar (Avtor), Rok Petkovšek (Avtor)

Povzetek

The laser- induced cavitation bubble, which collapses near a rigid boundary with a hole on a microscale is investigated for liquid pumping applications. The generated bubble and the hole have a comparable size on a scale of 100 μm. The dynamics of the process are visually tracked near the hole and through the hole. This is made possible by the translucent 3D-printed boundary. The main measurable quantities are the bubble oscillation times and the bubble movement. For the latter, we show that it follows the power law of the Kelvin impulse for the rigid boundary without a hole for small standoff distances up to the moment when the bubble touches the edge of the hole. Further, it was found that the bubble standoff distance has a negligible influence on the first oscillation time, while it increases by almost a factor of two for the second oscillation. During the second oscillation, the bubble enters the hole and displaces all the liquid in the direction of bubble propagation. This indicates a second pumping driver beside the jet produced during the collapse of the primary bubble.

Ključne besede

laser induced cavitation;micro pumping;rigid boundary;bubble dynamics;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 532.528
COBISS: 200584195 Povezava se bo odprla v novem oknu
ISSN: 0030-3992
Št. ogledov: 78
Št. prenosov: 6
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: lasersko povzročena kavitacija;mikro črpanje;trdna meja;dinamika mehurčka;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-9
Zvezek: ǂVol. ǂ177, [article no.] 111235
Čas izdaje: Oct. 2024
DOI: 10.1016/j.optlastec.2024.111235
ID: 24512123