Numerical Study of MHD Natural Convection in Trapezoidal Enclosure Filled With (50%MgO-50%Ag/Water) Hybrid Nanofluid: Heated Sinusoidal from Below

Abstract

Numerical simulation of MHD free convection in a two-dimensional trapezoidal cavity of a hybrid nanofluid has been carried out in this research. The cavity is heated sinusoidal from the bottom wall, and the inclined walls are cooled while the top wall is isolated. The hybrid nanofluid (MgO-Ag/water) has been used as a working fluid. The numerical simulation has been validated with past papers and met a good agreement. The considered parameters are a range of Rayleigh number (Ra= 103 to 106), Hartmann number (Ha= 0 to 60) and volume fraction (f= 0 to 0.02). The results are presented as isotherms, stream functions, local and average Nusselt numbers, from which it is observed that the strength of the stream functions and isotherms increases with the increase of the Ra and ϕ while the increase in Hartmann number reduce the circulation of the flow and increases the isotherms strength. Also, the Nusselt number is increases with Ra and ϕ while it decreases with Ha.

Non‐Newtonian nanofluid characteristics over a melting wedge: A numerical study

“…The nanofluid has a variety of sustainable and creative applications, including materials, electronics, catalysis, smart computers, and more. [1][2][3][4][5] Nanofluid is used in engines, pharmaceutical processes, fuel cells, and diminutive electrons, among other applications. [6][7][8][9][10] Electronic gadgets and nano-boards are presently significant in the industry.…”

“…Thermal conductivity and other flow characteristics have significant physical implications in distinct areas. The nanofluid has a variety of sustainable and creative applications, including materials, electronics, catalysis, smart computers, and more 1–5 . Nanofluid is used in engines, pharmaceutical processes, fuel cells, and diminutive electrons, among other applications 6–10 .…”

The Baffle Length Effects on the Natural Convection in Nanofluid-Filled Square Enclosure with Sinusoidal Temperature

“…Natural convection has been extensively studied in air-filled enclosures with differently heated vertical walls, with different boundary conditions for the heat source walls and different boundary conditions of other walls. Researchers have studied a large number of square, rectangular, and inclined casings using nanofluids as working fluids, suitable for various wall conditions and no-thickness walls [ 6 , 7 , 8 , 9 ]. In addition, a large number of studies have been considered in recent years, such as [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ], showing that introducing obstacles and wall-mounted baffles, filling the cavity with air, and varying the boundary conditions of the walls change the heat transfer.…”

Natural convection in a porous cavity filled (35%MWCNT-65% Fe3O4)/water hybrid nanofluid with a solid wavy wall via Galerkin finite-element process

“…In addition, the hybrid nanofluid improved the thermal properties and heat transfer performance, where it has better thermodynamic properties than a single nanofluid. Many studies have involved nanofluids in enhancing heat transfer 1 – 7 . Hybrid nanofluid is a new type of nanofluid obtained by merging more than one nanofluid.…”