Abstract
Abstract The influence of a slope angle on the stability of mechanical equilibrium in binary gaseous mixtures has been investigated both experimentally and numerically. Experimental studies have shown that the angle of inclination of the channel relative to the horizontal plane can be critical in convective mixing. When this angle is reached, the system performs a kinetic transition from an unstable to a stable state, that is, to diffusion. The problem is solved by the Lattice Boltzmann method using the two‐dimensional Navier‐Stokes equation, the continuity equation and the equation of concentration. Calculations are performed to study binary mixtures with different angles of inclination of the diffusion channel with respect to the vertical axis. Due to the increase of the angle of inclination, the convective flow intensity decreases. Numerical data on the structure fields of concentrations at different times depending on the increase of the slope angle are obtained.