The Hydrodynamic Cavitation Manifestation in Small Chips

Cavitation is a phase change phenomenon generated by the static pressure reduction of liquid medium at constant temperature. This process has been considered as disadvantageous mechanism in most turbomachinery systems, however, its potential releasing energy bubble collapse stage received lots attention recent decades. Particularly, applicability this micro scale gives rise to research studies different fields, i.e., wastewater treatment and medical imaging. In study, microfluidic devices housing small microchannels have fabricated study generation cavitating flow patterns bubbles. The main focuses work are on surface side wall roughness together with size effects cavitation generation. Accordingly, were using techniques adopted from semiconductor based micro- fabrication. experiments performed relatively higher upstream pressure, 4 7 MPa, investigate durability features. results show that elements very effective terms facile generation, while diameter channel does not lead intensified necessarily. bubbles extended outlet roughened microchannel even 5.5 supercavitation regime was observed high MPa.