Dresden 2009 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 25: Fluid dynamics II

DY 25.5: Vortrag

Donnerstag, 26. März 2009, 15:45–16:00, ZEU 118

Dynamically Adaptive Coordinate System for Binary Mixture Thin Films — •Ion Dan Borcia and Michael Bestehorn — Lehrstuhl für Theoretische Physik II, Brandenburgische Technische Universität, Cottbus, Germany

A binary mixture with deformable upper surface is numerically studied. Other numerical methods for hydrodynamics involving time-depending boundaries imply the calculation of the integration grid using spline algorithms (boundary-fitted coordinate solving method [1]). In our case the thin film equation [2] gives directly the integration grid for the 3D concentration equation. Linear and non-linear results using this method are presented.

[1] J.F. Thompson et al., J. Comput. Phys. 47, 1 (1982)

[2] A. Oron et al., Rev. Mod. Phys. 69, 931 (1997)