Physics – Fluid Dynamics
Scientific paper
2006-08-29
Lecture Notes in Physics 584, Thermal nonequilibrium phenomena in fluid mixtures, ed. W. Koehler and S. Wiegand, p 334 - 354 (
Physics
Fluid Dynamics
21 pages, 8 figures
Scientific paper
We summarize our findings about laterally periodic convection structures in binary mixtures in the Rayleigh-Benard system for positive Soret effect. Stationary roll, square, and crossroll solutions and their stability are determined with a multimode Galerkin expansion. The oscillatory competition of squares and rolls in the form of crossroll oscillations is reviewed. They undergo a subharmonic bifurcation cascade where the oscillation period grows in integer steps as a consequence of an entrainment process.
Huke Bjoern
Luecke Manfred
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