2026-04-20T22:00:46Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/69222025-12-19T10:01:26Zcom_20.500.11984_473col_20.500.11984_478

Fernandez de Arroiabe, Peru Martinez Agirre, Manex Bou-Ali, M. Mounir Shevtsova, Valentina 2025-03-25T17:05:20Z 2025-03-25T17:05:20Z 2025 0094-5765 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=180286 https://hdl.handle.net/20.500.11984/6922 A small perturbation in the absorption process disrupts the equilibrium, leading to surface tension gradients and, subsequently, Marangoni flows. This study examines the comparative role of gravity in the evolution of convective flows in an absorbing binary mixture considering Earth, Mars, the Moon and zero gravity. In the initial stage, the flow is driven by capillary forces towards the center of the perturbation, with gravity playing a negligible role. Over time, in the presence of gravity, the coupling of surface tension- and buoyancy-driven contributions gives rise to the formation of a periodic spatial structure and the generation of oscillations in time, thereby sustaining a weak instability. In contrast, in the absence of gravity, neither periodic structures nor oscillations are observed, as the potential competition between the two sources is eliminated. Instead, the flow pattern resembles that commonly seen in evaporating binary mixtures, exhibiting the formation of a stable rim and Marangoni spreading phenomena. In the intermediate regimes, when the gravity decreases from the Earth value to zero, the periodic patterns weaken, and become progressively more complex, while retaining a regular structure and expanding in size. eng © 2024 Elsevier Absorption Marangoni Heat transfer Microgravity Mars gravity Moon gravity Influence of gravity on dynamics of absorbing binary mixture http://purl.org/coar/resource_type/c_6501