Numerical simulation of thermal radiative heat transfer effects on Fe3O4-ethylene glycol nano uid EHD ow in a porous enclosure
نویسندگان
1 Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.
2 Department of Mechanical Engineering, CECOS University of IT and Emerging Sciences, Peshawar, Pakistan.
3 Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.
4 Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.
doi
10.24200/sci.2018.5567.1348چکیده
Electrohydrodynamic Fe3O4-Ethylene glycol nanofluid forced convection was simulated in presence of thermal radiation. The porous lid driven cavity had one moving positive electrode. A single-phase model was applied to simulate nanofluid behavior.Control volume based finite element method was employed to obtain the results, which showed the roles of Darcy number (Da), radiation parameter (Rd), Reynolds number (Re),nanofluid volume fraction (ɸ ), and supplied voltage (Δφ). Results depicted that maximum values of the temperature gradient were obtained for platelet-shape nanoparticles. Nusselt number was enhanced with increase in Darcy number and supplied voltage. Convection mode rose with increase in permeability of porous media and nanofluid volume fraction, but it decreased with the rise in Hartmann number.
