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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 34: Microfluidics I: Applications and Devices

CPP 34.11: Vortrag

Donnerstag, 26. März 2009, 12:15–12:30, ZEU 160

Lattice Boltzmann studies of finite size driven droplet evaporation and droplet dynamics — •Fathollah Varnik — Interdisciplinary Center for Advanced Materials Simulation, Ruhr University Bochum, Germany

The lattice Boltzmann (LB) method has received growing interest both in the scientific and the engineering community. Significant extensions and ramifications of the LB method have been proposed allowing the study of a rich variety of fluid dynamics problems such as the flow through porous media, two phase flows [1] as well as roughness effects on transitional flows [2], to name just a few.

The lattice Boltzmann method proves itself as a particularly powerful tool when it comes to a study of intricate boundary conditions such as chemical and topographical heterogeneity [3].

Here, the method is applied for a study of interesting issues such as instability (evaporation) of droplets in a system with a finite size as well as to the dynamics of droplets.

[1] X. Shan and H. Chen, Phys. Rev. E 47, 1815 (1993); and Phys. Rev. E 49, 2941 (1994); M. R. Swift, W. R. Osborn, and J. M. Yeomans, Phys. Rev. Lett. 75, 830 (1995); and A. J. Briant, A. J. Wagner, and J. M. Yeomans, Phys. Rev. E 69, 031602 (2004).

[2] F. Varnik, D. Dorner, and D. Raabe, J. Fluid Mech. 573, 191 (2007); F. Varnik and D. Raabe, Modell. Simul. Mater. Sci. Eng. 14, 857 (2006).

[3] F. Varnik, P. Truman, Bin Wu, P. Uhlmann, M. Stamm, D. Raabe, Phys. Fluid. 20, 072104 (2008).