ENTROPY AND HEAT-TRANSFER ANALYSIS OF MAGNETIC HYBRID NANOFLUID INSIDE A POROUS SQUARE CAVITY WITH THERMAL RADIATION

Abstract

In the present study, we have studied heat transfer and entropy generation exploration of Tiwari-Das model hybrid nanofluid made up of titanium oxide (TiO<sub>2</sub>) and silicon dioxide nanoparticles (SiO<sub>2</sub>) and ethylene glycol (EG) as base fluid flow over square cavity filled with porous medium in the presence of thermal radiation. The governing equations are incorporated and renewed into non-dimensional form. Finite-element method is implemented to solve the governing partial differential equations in stream function. Simulation results are presented thoroughly in the form of streamlines, isotherms, and entropy generation. Furthermore, local Nusselt number for various values of swayed parameters, such as volume fraction parameter of first hybrid nanofluid (0.01 ≤ ⌀1 ≤ 0.07), volume fraction parameter of second hybrid nanofluid (0.01 ≤ ⌀2 ≤ 0.07), Rayleigh number (3 × 10<sup>2</sup> ≤ Ra ≤ 7 × 10<sup>2</sup>), magnetic field parameter (0.1 ≤ M ≤ 0.7), porous parameter (0.1 ≤ D1 ≤ 0.7), radiation parameter (0.3 ≤ R ≤ 0.9), and Prandtl number (5.2 ≤ Pr ≤ 8.2). It is determined that temperature flow of SiO<sub>2</sub>/TiO<sub>2</sub> - EG hybrid nanofluid degenerates inside the cavity with intensified values of (D1). The problem concentrated on in this article has many practical engineering and practical application such as nuclear reactor, lubrication and furnaces, chemical processing equipment, solar thermal collector's design, air conditioning, cooling of electronic elements, etc.

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