Author
Gevari, M. T., Niazi, S., Karimzadehkhouei, M., Sendur, K., Mengüç, Mustafa Pınar, Ghorbani, M., Kosar, A.
Publication Date
2020-11-01
Publication Place
-
American Institute of Physics Inc.
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
2158-3226
Record ID
e86b4503-1557-4a8f-8d85-208ab2197075
Library Location
Mechanical Engineering
Date
2020-11-01
Notes
TÜBİTAK ; Sabanci University Internal Project Grant
Sample Text
Due to the potential of significant energy release in cavitating flows, early cavitation inception and intensification of cavitating flows are of great importance. To use this potential, we investigated the deagglomeration of nanoparticle clusters with the implementation of hydrodynamic cavitation in a microfluidic device. For this purpose, a microfluidic device with a micro-orifice geometry was designed and fabricated using standard microfabrication processes. The system was tested with distilled water in the assembled experimental setup. The flow patterns were characterized using the cavitation number and inlet pressure. Titania nanoparticles were utilized to prepare nanoparticle suspensions. The suspensions were heated to allow agglomeration of nanoparticles. The system was operated with the new working fluid (nanoparticle clusters) at different inlet pressures. After characterizing flow patterns, the flow patterns were compared with those of pure water. The deagglomeration effects of hydrodynamic cavitation on nanoparticle clusters showed the possibility to apply this method for the stabilization of nanoparticles, which paves way to the implementation of nanoparticle suspensions to thermal fluid systems for increased energy efficiency as well as to drug delivery. Our results also indicate that the presence of nanoparticles in the working fluid enhanced cavitation intensity due to the increase in the number of heterogeneous nucleation sites.
DOI
10.1063/5.0029070
Cilt
10
