Title
Effects of acoustic-streaming-induced flow in evaporating nanofluid droplets
Abbreviated Journal Title
J. Fluid Mech.
Keywords
drops; micro-/nano-fluid dynamics; LEVITATED DROPLETS; PLANE; Mechanics; Physics, Fluids & Plasmas
Abstract
We study the effect of acoustic streaming on nanoparticle motion and morphological evolution inside an acoustically levitated droplet using an analytical approach coupled with experiments. Nanoparticle migration due to internal recirculation forms a density stratification, the location of which depends on initial particle concentration. The time scale of density stratification is similar to that of perikinetic-driven agglomeration of particle flocculation. The density stratification ultimately leads to force imbalance leading to a unique bowl-shaped structure. Our analysis shows the mechanism of bowl formation and how it is affected by particle size, concentration, internal recirculation and fluid viscosity.
Journal Title
Journal of Fluid Mechanics
Volume
692
Publication Date
1-1-2012
Document Type
Article
Language
English
First Page
207
Last Page
219
WOS Identifier
ISSN
0022-1120
Recommended Citation
"Effects of acoustic-streaming-induced flow in evaporating nanofluid droplets" (2012). Faculty Bibliography 2010s. 3225.
https://stars.library.ucf.edu/facultybib2010/3225
Comments
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