Molecular dynamics simulation and measurement of contact angle of water droplet on a platinum surface

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dc.contributor.author Kandlikar, Satish
dc.contributor.author Maruyama, Shigeo
dc.contributor.author Steinke, Mark
dc.contributor.author Kimura, Tatsuto
dc.date.accessioned 2008-11-14T16:25:32Z
dc.date.available 2008-11-14T16:25:32Z
dc.date.issued 2001-11
dc.identifier.uri http://hdl.handle.net/1850/7481
dc.description Proceedings of the international mechanical engineering congress and exposition, November 11-16, 2001. The complete proceedings can be found at www.asme.org . en_US
dc.description RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
dc.description.abstract A water liquid droplet in contact with a platinum surface was simulated by the molecular dynamics method. Water molecules were modeled by SPC/E and one layer of harmonic molecules represented the platinum surface with the constant temperature heat bath model using the phantom molecules. Here, the water-platinum pair potential developed by Spohr (1989) based on extended Hückel calculations was employed. In the spreading process of the liquid droplet on the platinum surface, the area of contact region between water and platinum expanded just in proportional to the one-third power of time. This spreading rate was clearly in contrast to the case of Lennard-Jones droplet. The contact angles of water on a platinum surface under saturated conditions are measured. The measurements are made in a vacuum container using de-ionized and degassed water on a clean platinum surface. The equilibrium static, advancing and receding contact angles are measured by changing the orientation of the platinum surface. The droplets of different masses are placed on the horizontal platinum surface. The surface is the inclined to 20, 30 and 40 degrees. The advancing and receding contact angles under these conditions are measured. en_US
dc.language.iso en_US en_US
dc.publisher American Society of Mechanical Engineers (ASME) en_US
dc.title Molecular dynamics simulation and measurement of contact angle of water droplet on a platinum surface en_US
dc.type Proceedings en_US

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