Sivaraj, Chinnasamy and Vignesh, E (2021) Thermogravitational convection of ferrofluid combined with the second law of thermodynamics for an open chamber with a heat-generating solid block under an influence of uniform magnetic field. International Communications in Heat and Mass Transfer, 129. ISSN 0735-1933

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Abstract

The present numerical study scrutinizes the effect of uniform Lorentz force on the thermogravitational energy
transport and entropy production of nanosuspension in an open domain with a heat-generating solid element.
The left border is kept at low temperature (Tc) whilst the horizontal borders are assumed to be adiabatic. Finite
volume method (FVM) is employed to work out the heat and mass transfer equations. For fixed value of Rayleigh
number (Ra = 107
), numerical analysis was optimized for wide ranges of nanoparticle volume fraction (ϕ = 1%–
4%), thermal conductivity ratio of a heat generating body (k* = 0.1–5), Hartmann parameter (Ha = 0–100),
angle of inclined magnetic field (γ = 0◦–90◦) and non-dimensional temperature drop (Ω = 0.001–0.1). The
numerical solutions were analyzed employing patterns of temperature and stream function as well as average
Nusselt number and entropy lines. The outcomes indicated that, an increasing magnetic parameter Ha leads to
reduction of mean Nu and the rate of entropy production. An addition of nano-sized particles enhances the
energy transport and average entropy production for the system. It is also revealed that the maximum energy
transport strength occurs at high thermal conductivity ratio (k* = 5).

Item Type: Article
Uncontrolled Keywords: Natural convection Entropy generation Ferrofluid Open cavity Heat generating solid body
Divisions: PSG College of Arts and Science > Department of Mathematics
Depositing User: Mr Team Mosys
Date Deposited: 27 Mar 2023 05:48
Last Modified: 27 Mar 2023 05:48
URI: http://ir.psgcas.ac.in/id/eprint/1821

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