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Transport Mechanism of an Initially Spherical Droplet on a Combined Hydrophilic/Hydrophobic Surface
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 Title & Authors
Transport Mechanism of an Initially Spherical Droplet on a Combined Hydrophilic/Hydrophobic Surface
Myong, Hyon Kook; Kwon, Young Hoo;
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 Abstract
Fluid transport is a key issue in the development of microfluidic systems. Recently, Myong (2014) has proposed a new concept for droplet transport without external power sources, and numerically validated the results for a hypothetical 2D shape, initially having a hemicylindrical droplet shape. Myong and Kwon (2015) have also examined the transport mechanism for an actual water droplet, initially having a 3D hemispherical shape, on a horizontal hydrophilic/hydrophobic surface, based on the numerical results of the time evolution of the droplet shape, as well as the total kinetic, gravitational, pressure and surface free energies inside the droplet. In this study, a 3D numerical analysis of an initially spherical droplet is carried out to establish a new concept for droplet transport. Further, the transport mechanism of an actual water droplet is examined in detail from the viewpoint of the capillarity force imbalance through the numerical results of droplet shape and various energies inside the droplet.
 Keywords
Droplet Transport Mechanism;Hydrophilic/Hydrophobic Surface;Capillarity Force Imbalance;Surface Free Energy;VOF(Volume of Fluid);Numerical Simulation;CFD;
 Language
Korean
 Cited by
 References
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