Journal
CHINESE JOURNAL OF PHYSICS
Volume 65, Issue -, Pages 447-458Publisher
ELSEVIER
DOI: 10.1016/j.cjph.2020.03.006
Keywords
Hybrid nanofluid; Inclined periodic magnetic field; Porous medium; Natural convection
Categories
Funding
- Russian Science Foundation [17-19-20141]
- Russian Science Foundation [17-79-20141] Funding Source: Russian Science Foundation
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Heat transfer enhancement for various engineering systems can be achieved by the inclusion of metal nanoparticles inside the heat transfer liquid. Such an effect can be improved by considering the hybrid nanofluid when nanoparticles of different materials are added to the base fluid. The present study is devoted to computational analysis of thermal gravitational convection within a porous chamber under the impact of tilted periodic magnetic force. Governing equations formulated employing the single-phase nanoliquid approach, Brinkman-extended Darcy model for transport processes within the porous layer with the local thermal non-equilibrium approach, Boussinesq approximation for the description of the buoyancy force and magnetic field, have been resolved using the Galerkin finite element method. Impacts of the Darcy number, Hartmann number, Rayleigh number, periodicity of the magnetic field, magnetic field inclination angle, thermal conductivity ratio, and medium porosity on flow and thermal patterns have been examined. It has been found that parameters of the periodic magnetic field have the non-monotonic influence of the heat transfer performance.
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