Abstract
This study investigated heat transfer in magnetohydrodynamic (MHD) mixed convection flow of ferrofluid along a vertical channel. The channel with non-uniform wall temperatures was taken in a vertical direction with transverse magnetic field. Water with nanoparticles of magnetite (Fe 3 O 4) was selected as a conventional base fluid. In addition, non-magnetic (Al 2 O 3) aluminium oxide nanoparticles were also used. Comparison between magnetic and magnetite nanoparticles were also conducted. Fluid motion was originated due to buoyancy force together with applied pressure gradient. The problem was modelled in terms of partial differential equations with physical boundary conditions. Analytical solutions were obtained for velocity and temperature. Graphical results were plotted and discussed. It was found that temperature and velocity of ferrofluids depend strongly on viscosity and thermal conductivity together with magnetic field. The results of the present study when compared concurred with published work.
Highlights
The idea of using small-sized solid particles inside fluids to increase their thermal conductivity was initially initiated by Maxwell [1]
The present study examined analytically heat transfer in mixed convection flow of a ferrofluid inside a vertical channel
In order to make the ferrofluid, when the base fluid was electrically conducting under the influence of an external magnetic field, nanoparticles of magnetite (Fe3O4) was added to the conventional base fluid which was water
Summary
The idea of using small-sized solid particles inside fluids to increase their thermal conductivity was initially initiated by Maxwell [1]. Several other studies were conducted in the last few years, on nanofluids by taking different types of convectional base fluids with different nanoparticles, see for example [20,21,22,23,24,25,26,27,28,29] and the related references therein. The above literature review revealed that no study has yet to be conducted on heat transfer in mixed convection flow of ferrofluid inside a vertical channel in the presence of a magnetic field.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
