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In this study, double-diffusive natural convection within a square cavity containing two square blocks that serve as sources of both heat and mass transfers is investigated. The analysis was carried out using the multiple-relaxation-time lattice Boltzmann method. The cavity walls were modeled as insulated and impermeable to mass transfer. Our focus was on examining the effects of the buoyancy ratio (−5 ≤ Br ≤ 5) and the thermal Rayleigh number, 104 ≤ RaT ≤ 106 on the flow, heat, and mass transfer characteristics. The results are presented through streamlines, isotherms, concentration contours, and the average Nusselt and Sherwood numbers, providing a comprehensive view of the system’s behavior.

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Analysis of Thermosolutal Convection in a Square Cavity Containing Two Heating and Diffusing Square Cylinders

  • 会议论文

  • 发表日期：

    2025年

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  • L. Foura,
  • Y. Dahani,
  • A. Amahmid,
  • A. Nabbagui,
  • M. Hasnaoui

摘要

In this study, double-diffusive natural convection within a square cavity containing two square blocks that serve as sources of both heat and mass transfers is investigated. The analysis was carried out using the multiple-relaxation-time lattice Boltzmann method. The cavity walls were modeled as insulated and impermeable to mass transfer. Our focus was on examining the effects of the buoyancy ratio (−5 ≤ Br ≤ 5) and the thermal Rayleigh number, 104 ≤ RaT ≤ 106 on the flow, heat, and mass transfer characteristics. The results are presented through streamlines, isotherms, concentration contours, and the average Nusselt and Sherwood numbers, providing a comprehensive view of the system’s behavior.