https://doi.org/10.1140/epje/s10189-025-00512-4
Regular Article - Flowing Matter
Mixed convection in thermo-gravitational column: a continuous species separation
1
Institut de Mécanique des Fluides de Toulouse, UMR CNRS INPT/UPS N 5502, Université de Toulouse, 31400, Toulouse, France
2
Université de Carthage, EPT, LIM (LR 01-ES-13), Université de Carthage, 2078, La Marsa, Tunisie
Received:
13
May
2025
Accepted:
23
July
2025
Published online:
5
August
2025
So far, species separation has been achieved in closed vertical thermogravitational columns (TGC). To obtain continuous separation, the initially homogeneous binary solution with a positive thermodiffusion coefficient was introduced at a constant volumetric flow rate through one of the two vertical slots of the TGC and retrieved through the opposite slot. This process required the horizontal dimension separating the two slots to be sufficiently large for the mass regime at the exit slot to reach the steady state associated with a vertical stratification of the mass fraction. Analytical resolution and numerical simulations were developed and showed good agreement between theoretical and numerical results.
© The Author(s) 2025
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