Stability of a Two-Component Fluid Layer Heated from Below
J. C. Legros, Jean Karl Platten, P. Poty · The Physics of Fluids · 1972
In connection with recent experimental results, the stability of a two-component fluid layer heated from below is examined taking into account the concentration gradient due to thermal diffusion. With the use of a variational method (local potential technique) developed by Glansdorff and Prigogine, an approximate solution is proposed for dilute solutions. The critical Rayleigh number increases for negative thermal diffusion factors and decreases for positive ones.