Driving convection by a temperature gradient or a heat current

Abstract

Bifurcation properties, stability behavior, dynamics, and the heat transfer of convection structures in a horizontal fluid layer that is driven away from thermal equilibrium by imposing a vertical temperature difference are compared with those resulting from imposing a heat current. In particular oscillatory convection that occurs in binary fluid mixtures in the form of travelling and standing waves is determined numerically for the two different driving mechanisms. Conditions are elucidated under which current driven convection is stable while temperature driven convection is unstable.

References in corpus (4)

• Convection in Binary Fluid Mixtures. I. Extended Traveling Wave and Stationary States. (Physical Review E, in press)
• Influence of the Soret effect on convection of binary fluids
• Standing wave oscillations in binary mixture convection: from onset via symmetry breaking to period doubling into chaos
• Mechanism of finite-amplitude double-component convection due to different boundary conditions