Direct numerical simulation of double-diffusive convection at vibrations

The problem of the evolution double-diffusive convection in a plane layer under action external vibrations is solved numerically. A two-layered system miscible fluids placed vertical fields gravity and linear translational considered. former generator convection: due to difference diffusivity species dissolved, unstably stratified fluid regions are formed layer. Water used as continuous medium. bottom solution sodium chloride it has higher density than top by glucose solution. Initially, stably stratified. two-dimensional transitional formulation means ANSYS Fluent commercial software. change behavior studied. Convective structures profiles at different vibrational acceleration magnitudes, well convective characteristics, Analysis conducted two aspects: global local. Global analysis implicates description processes taking place scale entire layer, local focuses on dynamics separate structures. main vibration effect results slowdown. In scale, this manifests itself decrease growth rate structures; magnitude increases (is stored) with time. relatively low accelerations, onset delayed, whereas high accelerations reoriented along horizontal direction. obtained can be develop vibratory control methods for diffusive-reactive systems.