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Keywords: contact angle
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Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 767-772, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78081
... Engineering National Tsing Hua University, Hsinchu 30013, Taiwan ABSTRACT The static Young-Laplace equation is solved with the geometry method to yield the bubble shape on a horizontal flat surface under various contact angles. Multi-solution modes are found. Among the many possible equilibrium shapes...
Topics: Bubbles, Geometry
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 889-894, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78361
... 30 07 2010 The purpose of this investigation is to find a unique and accurate criterion to measure surface wettability. The asymptotic contact angle (droplet contact angle in no gravity condition), which is independent of droplet size, is used to identify the surface wettability...
Proceedings Papers

Proc. ASME. FEDSM2008, Volume 1: Symposia, Parts A and B, 103-109, August 10–14, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2008-55137
... shape is determined by a level set method which is modified to treat the contact angles. The matching conditions at the interface are accurately imposed by incorporating the ghost fluid approach based on a sharp-interface representation. Based on the numerical results, the droplet dynamics including...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 479-485, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37101
... Flow Pattern Void Fraction Pressure Drop Wettability Contact Angle f Proceedings of FEDSM2007 5th Joint ASME/JSME Fluids Engineering Conference July 30-August 2, 2007 San Diego, California USA two-phase flow, a visualization study was performed using an acrylic pipe and a hydrophobic pipe...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 3, 703-709, July 11–15, 2004
Publisher: American Society of Mechanical Engineers
Paper No: HT-FED2004-56519
... with the construction materials tested. The sessile drop methodology allows the evaluation of either the surface energy of solids or the interfacial energy of liquids. The methodology uses an image digitalization system for measuring the contact angle of liquids on the solid’s surface. The contact angles thus measured...
Proceedings Papers

Proc. ASME. FEDSM2006, Volume 2: Fora, 547-550, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2006-98176
... Drop motion Wettability gradient Contact angle VOF model This study is concerned with the numerical simulation of a drop moving on a surface due to a wettability gradient. The wettability gradient is introduced by varying the static contact angle along the surface. The unsteady laminar...
Proceedings Papers

Proc. ASME. FEDSM2006, Volume 2: Fora, 655-662, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2006-98490
... Dropwise condensation heat transfer model Contact angle Departure diameter Interfacial interaction Dropwise condensation heat transfer performance depends not only on the condensing conditions, but also on the interfacial interaction between condensate and condensing surface material...
Proceedings Papers

Proc. ASME. FEDSM2006, Volume 1: Symposia, Parts A and B, 609-615, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2006-98247
... at very short distances, the smoothing of corner singularities for both Newtonian and non-Newtonian fluids, and some molecular aspects of wetting phenomena, particularly contact angle hysteresis. Molecular Dynamics Viscous Flow lubrication Theory Corner Singularities Non-Newtonian Fluids...