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Free convection in an open triangular cavity filled with a nanofluid under the effects of Brownian diffusion, thermophoresis and local heater N. S. Bondareva, M. A. Sheremet, H. F. Oztop, N. Abu-Hamdeh

Contributor(s): Sheremet, Mikhail A | Öztop, Hakan F | Abu-Hamdeh, Nidal | Bondareva, Nadezhda SMaterial type: ArticleArticleSubject(s): теплопередача | естественная конвекция | смешанная конвекция | наножидкости | броуновская диффузияGenre/Form: статьи в журналах Online resources: Click here to access online In: Journal of Heat Transfer Vol. 140, № 4. P. 042502 (1-12)Abstract: Natural convection of a water-based nanofluid in a partially open triangular cavity with a local heat source of constant temperature under the effect of Brownian diffusion and thermophoresis has been analyzed numerically. Governing equations formulated in dimensionless stream function and vorticity variables on the basis of two-phase nanofluid model with corresponding initial and boundary conditions have been solved by finite difference method. Detailed study of the effect of Rayleigh number, buoyancy-ratio parameter, and local heater location on fluid flow and heat transfer has been carried out. It has been revealed that an increase in the buoyancy force magnitude leads to homogenization of nanoparticles distribution inside the cavity. A growth of a distance between the heater and the cavity corner illustrates the heat transfer enhancement.
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Natural convection of a water-based nanofluid in a partially open triangular cavity with a local heat source of constant temperature under the effect of Brownian diffusion and thermophoresis has been analyzed numerically. Governing equations formulated in dimensionless stream function and vorticity variables on the basis of two-phase nanofluid model with corresponding initial and boundary conditions have been solved by finite difference method. Detailed study of the effect of Rayleigh number, buoyancy-ratio parameter, and local heater location on fluid flow and heat transfer has been carried out. It has been revealed that an increase in the buoyancy force magnitude leads to homogenization of nanoparticles distribution inside the cavity. A growth of a distance between the heater and the cavity corner illustrates the heat transfer enhancement.

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