Optimal Natural Convection Heat Transfer Improvement by Combining Periodic Heating Temperature, Cavity Inclination, and Nanofluid
作者： Mourad Hati , Abdelghani Raji , Mohammed Hasnaoui , Mohamed Naïmi , Mohamed El Abdallaoui
DOI: 10.1080/01457632.2016.1212574
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摘要: ABSTRACTNatural convection within a square inclined cavity filled with Al2O3–water nanofluid is investigated numerically. The temperature of the cooled surface maintained constant, while that opposite (heating temperature) varied sinusoidally in time. remaining walls are considered adiabatic. parameters governing problem amplitude and period variable temperature, Rayleigh number, inclination cavity, solid volume fraction. A substantial enhancement heat transfer obtained by combining beneficial effects heating (via its amplitude), nanoparticles In comparison constant conditions, it found both may lead to drastic changes flow structure corresponding transfer. resonance phenomenon, observed for critical periods exciti...
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