Abstract
A numerical study on convective heat transfer of hybrid nanofluid packed in a right angled triangular cavity heated by a sinusoidal temperature maintained from lower side and subjected to a constant magnetic field have been studied in this work. The hypotenuse side of the triangular cavity has been kept in uniform cool temperature while the remaining side is insulated. The governing equations of the problem have been discretized numerically with help of finite element method. A fixed Prandtl number Pr=6.2 has been used for the numerical solution. Several values of Rayleigh number Ra=102-106 , and Hartmann number Ha=0-100 which are the non-dimensional governing parameters have been examined. The volume fraction =0.01, 0.05, 0.1 and the heat generation parameter Q = 1 have been taken for this work. Calculate and the graph of Nusselt number corresponding to different parameters have been presented. The results show that Nusselt number has been decreasing function of nanoparticles Rayleigh number and also it is a decreasing function of Hartmann number. Obtained results has been compared with previously obtained data by other authors.
Highlights
In recent years, convective flow in a cavity with numerous thermal boundary conditions have created an eagerness to several researchers due to its vast applications in industry and environment
Nonuniform temperature distribution keep on the active wall due to shading or other effects in the fields, such as solar energy collection and cooling of electronic components
Rashad et al [15] studied natural convection in a triangular cavity filled with Cu-Al203/water hybrid nanofluid with MHD effect
Summary
Convective flow in a cavity with numerous thermal boundary conditions have created an eagerness to several researchers due to its vast applications in industry and environment. Bilgen and Yedder [8] analyzed the natural convection with sinusoidal temperature profiles in a wall in a rectangular enclosure They showed that when the heated section is in the lower half of the enclosure in this case the heat transfer is higher. Deng and Chang [9] studied numerically the natural convection with two spatially varying sinusoidal temperature distributions on the left and right sidewalls in a rectangular enclosure. They found that the nonuniform temperature distribution increases heat transfer as compared to the case of uniform wall temperature. Rashad et al [15] studied natural convection in a triangular cavity filled with Cu-Al203/water hybrid nanofluid with MHD effect. This present study focused on triangular cavity heated sinusoidal from below with the presence of magnetic field and internal heat generation with a constant heat flux
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