Roll and square convection in binary liquids: a few--mode Galerkin model

Details Roll and square convection in binary liquids: a few--mode Galerkin model Roll and square convection in binary liquids: a few--mode Galerkin model

2009-09-04

arxiv.org/abs/0909.0860v1

Physics

Fluid Dynamics

18 oages, 6 figures

Scientific paper

We present a few--mode Galerkin model for convection in binary fluid layers subject to an approximation to realistic horizontal boundary conditions at positive separation ratios. The model exhibits convection patterns in form of rolls and squares. The stable squares at onset develop into stable rolls at higher thermal driving. In between, a regime of a so-called crossroll structure is found. The results of our few--mode model are in good agreement with both experiments and numerical multi--mode simulations.

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