Abstract
The goal of this work is to study numerically the thermodiffusion effect (Soret effect) on double diffusive mixed convection inside a driven cavity. The fluid flow is solved by a multiple relaxation time (MRT) lattice Boltzmann method (LBM), whereas the temperature and concentration fields are computed by finite difference method (FDM). To assess numerical accuracy, the model (MRT-LBM coupled with FDM) are verified and validated using data from the literature. Besides reasonable agreement, satisfactory computational efficiency is also found. Thereafter, the model is applied for the thermal diffusion effect on a double-diffusive mixed convection in a cavity with moving lid. Results are obtained depending on various dimensionless parameters. It is found that upon increasing the Soret number, heat transfer is slightly enhanced whereas the thickness of the concentration boundary layer increases, thereby decreasing the mass transfer rate.








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Mhamdi, B., Bettaibi, S., Jellouli, O. et al. MRT-lattice Boltzmann hybrid model for the double diffusive mixed convection with thermodiffusion effect. Nat Comput 21, 393–405 (2022). https://doi.org/10.1007/s11047-022-09884-4
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DOI: https://doi.org/10.1007/s11047-022-09884-4