20.500.12556/RUL-179049 Laser-induced cavitation bubble interaction with surface-attached bubbles We study the interaction of laser-induced cavitation bubbles generated atop an electrode covered with hydrogen bubbles. The bubbles respond to the shock wave from laser-induced breakdown and the flow field of expanding and collapsing cavitation bubbles. High-speed imaging reveals that both the shock wave and subsequent flow contribute to bubble detachment and electrode clearance. Clearance occurs within an approximately circular area exceeding 3 times the maximum bubble radius, with partial clearance extending to 5 times this radius, which is considerably larger than reported for particulate or liquid contaminant removal. The initial shock wave propagates as a void fraction wave upon reaching the bubbles, producing radially propagating bubble disturbance with velocities ranging from 490 m/s at low bubble concentrations to 50 m/s at high concentrations. These speeds are within the range expected for linear waves in bubbly liquids according to Wood’s formula. Bubble removal persists for 10 ms, approximately 100 times longer than the cavitation bubble lifetime, which is attributed to long-lasting vortical flow generated by non-spherical cavitation bubble collapse. The findings may help to improve the removal of particulate contaminants as well as reducing ohmic loads in electrolyzers. laser-induced cavitation surface cleaning bubble removal shockwave void fraction wave lasersko povzročena kavitacija čiščenje površin odstranjevanje mehurčkov udarni valovi val deleža praznin true false true Angleški jezik Slovenski jezik Članek v reviji 2026-02-04 11:50:30 2026-02-04 11:50:35 2026-02-05 04:27:09 0000-00-00 00:00:00 2026 0 0 10 str. Vol. 728, art. 166122 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.528:544.537 0169-4332 10.1016/j.apsusc.2026.166122 267287299 Agrez_..._Laser-induced....pdf Agrez_..._Laser-induced....pdf 1 B85C8689F95BA2217D3BCB7E35F946CC d06ae7c6bf9ff6f14f90fad25582d1ba3c23294af9faa505cf77a688f3acaf67 9fae07f9-01b7-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=227158 https://www.sciencedirect.com/science/article/pii/S0169433226003260 1 40084396-01b7-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=227157 Fakulteta za strojništvo 0 0 0