Development of convection in binary mixture with soret effect

Development of Convection in Binary Mixture with Soret Effect

Molecular diffusion processes are caused by concentration gradients in a multi-component mixture. Noticeable diffusion flux can also be induced by temperature gradients which lead to partial separation of constituent components. This cross effect between temperature and concentration is known as thermo diffusion or Soret effect. This effect can be quite important in the analysis of the distribu...

Marangoni convection in binary mixtures with Soret effect

Nonlinear Pattern Selection in Binary Mixture Convection with Through-Flow

The pattern selection problem in binary-mixture convection in an extended channel with a lateral through-flow is presented. The through-flow breaks left–right parity and changes pattern dynamics dramatically. The problem is studied based on computer simulation of the complete set of hydrodynamic equations (OberbeckBoussinesq approximation) in the two-dimensional rectangular channel with aspect ...

The Onset of Double Diffusive Convection in a Binary Viscoelastic Fluid Saturated Porous Layer with Soret Effect

The onset of double diffusive convection in a binary viscoelastic fluid saturated porous layer, which is heated and salted from below in the presence of Soret effect is studied using both linear and nonlinear stability analyses. The linear theory is being related to the normal mode method. The modified Darcy law for the viscoelastic fluid of the Oldroyd type is used to model the momentum equati...

Localized waves without the existence of extended waves: oscillatory convection of binary mixtures with strong soret effect.

Spatially confined solutions of traveling convection rolls are determined numerically for binary mixtures such as ethanol-water. The appropriate field equations are solved in a vertical cross section of the rolls perpendicular to their axes subject to realistic horizontal boundary conditions. The localized convective states are stably and robustly sustained by strongly nonlinear mixing and comp...