Journal
PHYSICA SCRIPTA
Volume 96, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/abe90f
Keywords
modified fourier heat flux; ethylene glycol; multi-walled carbon nanotubes; finite difference method; magnetic field; thermal radiation
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This study numerically examines the impact of modified Fourier heat flux on the flow and heat transfer characteristics of magnetic nanofluid inside a cavity packed with Ethylene Glycol - Multiwalled carbon nanotubes type nanofluid, taking thermal radiation into account. The results show that the heat transfer rates increase significantly when multi-walled carbon nanotubes of volume fraction 0.03 are added to the base fluid.
Impact of modified Fourier heat flux on flow and heat transfer characteristics of magnetic nanofluid inside a cavity packedwith Ethylene Glycol - Multiwalled carbon nanotubes type nanofluid by taking thermal radiation into the account is numerically examined in this analysis. The cavity is filled with nanofluid made up of multi-walled carbon nanotubes as nanoparticle and Ethylene glycol as base fluid. Finite difference method is employed to solve the dimensionless partial differential equations represents energy and fluid flow equations of the present problem. Streamlines and Isotherms with different values of pertinent variables, such as, Magnetic parameter (0.1 <= M <= 0.3), volume fraction parameter (0.01 <= phi <= 0.03), Prandtl number (6.2 <= Pr <= 8.2), thermal relaxation parameter (0.1 <= gamma <= 0.3), Rayleigh number (100 <= Ra <= 1000) and radiation number (0.01 <= R <= 0.03) are plotted through graphs. Average Nusselt number values are also calculated for several values of parameters and are also represented through plots. It is perceived from this investigation that the rates of heat transfer enriched from 4.8% to 12.6% when multi-walled carbon nanotubes of volume fraction 0.03 are added to the base fluid. Thermal relaxation parameter insentifies the rates of heat transfer of EG - MWCNTs type nanofluid inside the cavity.
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