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DEVELOPMENT OF A NUMERICAL TECHNIQUE FOR CAPILLARY SPREADING OF A DROPLET CONTAINING PARTICLES ON THE SOLID SUBSTRATE  

Hwang, Wook-Ryol (경상대학교 기계항공공학부)
Jeong, Hyun-Jun (경상대학교 기계항공공학부 대학원)
Kim, See-Jo (안동대학교 기계공학부)
Kim, Chong-Youp (고려대학교 화공생명공학과)
Publication Information
Journal of computational fluids engineering / v.12, no.4, 2007 , pp. 14-19 More about this Journal
Abstract
We present a direct numerical simulation technique and some preliminary results of the capillary spreading of a droplet containing particles on the solid substrate. We used the level-set method with the continuous surface stress for description of droplet spreading with interfacial tension and employed the discontinuous Galerkin method for the stabilization of the interface advection equation. The distributed Lagrangian-multipliers method has been combined for the implicit treatment of rigid particles. We investigated the droplet spreading by the capillary force and discussed effects of the presence of particles on the spreading behavior. It has been observed that a particulate drop spreads less than the pure liquid drop. The amount of spread of a particulate drop has been found smaller than that of the liquid with effectively the same viscosity as the particulate drop.
Keywords
Level-set method (LSM); Continuous surface stress (CSS) model; Discontinuous Galerkin method (DG); Distributed Lagrangian Multiplier method (DLM); Capillary spreading of droplet;
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