1. Vpliv materiala stene na dinamiko kavitacijskega mehurčka in udarnega vala
- Author
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Kočoski, Aleksandar and Dular, Matevž
- Subjects
Rayleighjev čas kolapsa ,bubble dynamics ,plexiglass ,dinamika mehurčka ,pleksi steklo ,solid surface ,hitre kamere ,kavitacija ,high-speed cameras ,Rayleigh collapse time ,cavitation ,steklo ,stena ,udc:532.528:666.15:004.932(043.2) ,glass - Abstract
Pojem kavitacija opisuje pojav in aktivnost mehurčkov v kapljevini zaradi padca tlaka. Razumevanje pojava omogoči izogibanje škodi in konstruktivno izkoriščanje destruktivne moči. V nalogi je analiziran vpliv materiala bližnje stene na dinamiko kavitacijskega mehurčka in udarnega vala. S hitro kamero je bil posnet razvoj osamljenega lasersko ustvarjenega mehurčka v mirujoči vodi na različnih oddaljenostih od stekla in pleksi stekla. Predstavljeni so kvantitativni in kvalitativni rezultati računalniške obdelave slik. Čas kolapsa je primerjan s teoretičnim po Rayleigh-Plessetovi enačbi. The term cavitation describes the occurrence and activity of bubbles in a liquid due to a pressure drop. Understanding the phenomenon enables avoiding damage and constructive use of the destructive power. This thesis analyzes the influence of the material of a nearby solid surface on the dynamics of a cavitation bubble and shock wave. The development of a single laser-generated bubble in quiescent water at various distances from glass and plexiglass was recorded with a high-speed camera. Quantitative and qualitative results of computer image processing are presented. The collapse time is compared with the theoretical time according to the Rayleigh-Plesset equation.
- Published
- 2021