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http://dx.doi.org/10.3795/KSME-B.2010.34.6.569

Development of Multiscale Simulation Technique for Multiphase Fluid System  

Han, Min-Sub (School of Mechanical System Engineering, Univ. of Incheon)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.6, 2010 , pp. 569-577 More about this Journal
Abstract
A multiscale particle simulation technique that can be applied to a multiphase fluid system has been developed. In the boundary region where the macroscopic- and microscopic-scale models overlap each other, three distinctive features are introduced in the simulation. First, a wall is set up between the gas and liquid phases to separate them and match the phases respectively to the macroscopic conditions stably. Secondly, the interfacial profile is obtained near the matching region and the wall translates and rotates to accommodate the change in the liquid-vapor interfacial position in the molecular model. The contact angle thus obtained can be sent to the macroscopic model. Finally, a state of mass and temperature in the region is maintained by inserting and deleting the particles. Good matching results are observed in the cases of the complete and partial wetting fluid systems.
Keywords
Domain Decomposition; Molecular Dynamics Simulation; Contact Line;
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