Abstract
In this study, the heat transfer and laminar flow of Water/Al2O3 nanofluid in a T-shaped enclosure with lid-driven under the influence of applying magnetic field have been numerically investigated. The numerical solving domain has been simulated two-dimensionally for Richardson numbers of 0.1, 1 and 10 for volume fractions of 0–6% of nanoparticles. In this paper, the effect of applying homogeneous magnetic field in Hartman numbers of 0, 30 and 60 on the natural and forced heat transfer parameters of nanofluid has been analyzed and compared. The results of this research revealed that, applying magnetic field has significant effect on the temperature domain and fluid flow and considerably reduces the circulation mechanisms of fluid. By increasing Richardson and Hartmann numbers, the transfer momentum of cap in the bottom layers of fluid penetrates lesser and the amount of heat transfer reduces. The enhancement of volume fraction of nanoparticles and the reduction of Richardson and Hartmann numbers, significantly enhance the heat transfer of enclosure with cold fluid. Also, the changes of volume fraction of nanoparticles have less influence on the variations of velocity domain and the changes of magnetic field intensity greatly affect the velocity domain.
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