Recently, we proved that it was possible to significantly increase the importance of the species separation for binary mixtures, under microgravity, using forced convection obtained by a uniform translational displacement of the horizontal isothermal walls of the cell maintained at Th and Tc respectively, with ΔT = Th −Tc . The presentwork is an extension of the study performed byMojtabi (2020) with various mixtures, from binary to n-component mixtures. An application with a ternarymixture was presented. The mixture of tetralin, isobutyl benzene, n-dodecane with respectively 0.8–0.1–0.1 mass fractions was studied experimentally in weightlessness.