New computational approach for exergy and entropy analysis of nanofluid under the impact of Lorentz force through a porous media

MHD free convection of Al2O3–water nanofluid considering thermal radiation: A numerical study

This paper numerically examines laminar natural convection in a sinusoidal corrugated enclosure with a discrete heat source on the bottom wall, filled by pure water, Al2O3/water nanofluid, and Al2O3-Cu/water hybrid nanofluid which is a new advanced nanofluid with two kinds of nanoparticle materials. The effects of Rayleigh number (103≤Ra≤106) and water, nanofluid, and hybrid nanofluid (in volume concentration of 0% ≤ ϕ ≤ 2%) as the working fluid on temperature fields and heat transfer performance of the enclosure are investigated. The finite volume discretization method is employed to solve the set of governing equations. The results indicate that for all Rayleigh numbers been studied, employing hybrid nanofluid improves the heat transfer rate compared to nanofluid and water, which results in a better cooling performance of the enclosure and lower temperature of the heated surface. The rate of this enhancement is considerably more at higher values of Ra and volume concentrations. Furthermore, by applying ...

https://journals.sagepub.com/doi/pdf/10.1155/2014/147059

Taquiur Rahman Mohammad

Papers

Natural convection in cavities with constant flux heating at the bottom wall and isothermal cooling from the sidewalls