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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2005

Reverse transition to hydrodynamic stability through the Schwarzschild line in a supercritical fluid layer

Résumé

We consider a fluid close to its gas-liquid critical point in a bottom-heated cavity. Due to strong density stratification, both the Schwarzschild and the Rayleigh stability criteria are relevant at the same space scale. Taking advantage of the competition between these two limits of the convection-onset criterion, we numerically exhibit striking non-Boussinesq effects: the reverse transition to stability through the Schwarzschild line of a heat diffusing layer subjected to convection, and the convection onset inside a few-millimeters-thick layer according to the Schwarzschild criterion.
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hal-00833850 , version 1 (13-06-2013)

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Gilbert Accary, Isabelle Raspo, Patrick Bontoux, Bernard Zappoli. Reverse transition to hydrodynamic stability through the Schwarzschild line in a supercritical fluid layer. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2005, 72 (3), pp.035301. ⟨10.1103/PhysRevE.72.035301⟩. ⟨hal-00833850⟩

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