Библиографическое описание:Oscillatory instability caused by the interplay of Soret effect and cross-diffusion : научное издание / B. B. Seta [et al.]. - Текст : непосредственный // Physics of Fluids. - 2023. - Т. 35, № 2. - ISSN 1070-6631. - ISSN 1089-7666, DOI 10.1063/5.0139711.
Аннотация:<jats:p>We show that a subtle coupling between the thermal and solutal gradients driven by the thermodiffusion, cross-diffusion, and buoyancy force can lead to oscillatory dynamic behavior of a ternary mixture in the thermogravitational column. The potentially unstable stratification results from the interplay of mass fluxes of the two heaviest components where the leading role belongs to one of them. Our experiments and numerical analysis not only evidence the presence of oscillatory instability but also demonstrate the emergence of the secondary instability in the form of swinging pattern in addition to the large-scale standing wave. We suggest that the region, where oscillatory instability occurs, is characterized by opposite signs of Soret ST1′ and thermodiffusion DT1′ coefficients due to large cross-diffusion contribution.</jats:p>
Держатель оригинала документа:Department of Civil and Mechanical Engineering, Technical University of Denmark 1, Koppels Allć, Building 404, DK-2800 Kgs. Lyngby, Denmark, Ikerbasque, Basque Foundation for Science 5, Bilbao 20500, Spain, Institute of Computational Modelling SB RAS 3, Akademorodok 50-44, 660036 Krasnoyarsk, Russia, Mechanical and Manufacturing Department, Mondragon University 2, Loramendi 4, Mondragon 20500, Spain, Siberian Federal University 4, Svobodny 79, 660041 Krasnoyarsk, Russia
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