Heat transfer enhancement and migration of ferrofluid due to electric force inside a porous medium with complex geometry

Abstract

The migration of ferrofluid particles due to an electric field within a porous space is examined. An algorithm was developed for CVFEM to solve the coupled equations. The properties of Fe 3 O 4 -ethylene glycol nanofluid are dependent on the electric field and on the shape of the nanoparticles. The energy equation seems more interesting in the presence of a radiative term. The influence of nanoparticles' shape, voltage, radiation parameter and Darcy number on nanofluid thermal behavior has been described. Average Nusselt number increases with expansion of the thermal radiation in the system. Enhancing the shape factor causes the Nusselt number to increase. The Darcy number yields more random patterns of isotherms.

Numerical Study of Thermal Radiation Phenomenon and Its Influence on Amelioration of the Heat Transfer Mechanism through MHD Non-Newtonian Casson Model

“…Hence, studies of the non-Newtonian Casson fluid have their importance in engineering, as well as in scientific areas [5][6][7][8][9][10]. Most of the related studies look at heat transfer mechanisms as well as mass transfer aspects and their importance in engineering fields using various types of fluids, such as the viscoelastic nanofluid, ferrofluid, non-Newtonian blood fluid, the flow of copper oxide nanoparticles, Bingham fluid, Jeffrey fluid, micropolar fluid, Newtonian and non-Newtonian nanofluid [11][12][13][14][15][16][17][18][19][20][21].…”

Heat transfer enhancement using different shapes of Cu nanoparticles in the flow of water based nanofluid

“…Choi [1] in laboratory experiment concluded that the heat transfer characteristic like thermal conductivity and viscosity of base fluids can be altered by nearly dispersing some volume of nanoparticles into it. Because of the enhanced thermophysical properties nanofluids are being preferred in numerous manufacturing engineering and medical appliances such as in cooling of microchips in computers, solar thermal engineering, transportations, automotive radiators, domestic refrigerators, drug delivery, cancer tumor treatment and many others [2][3][4][5][6][7]. Depending on the solid volume fraction and shape of the nanoparticle's different models of effective viscosity of nanofluids has been proposed [8][9][10].…”