Cooling a Hot Semiannulus with Constant Heat Flux by Using Fe3O4-Water Nanofluid and a Magnetic Field: Natural Convection Mechanism

In this simulation, the nanoparticle distribution and entropy generation were studied using the Buongiorno’s developed two-phase model and magnetic field inside a porous semiannulus cavity. The influence of three terms was considered in the Buongiorno’s developed two-phase model such as Brownian mot...

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Bibliographic Details
Published inJournal of nanomaterials Vol. 2022
Main Authors Yang, Zhengqiang, Bouzgarrou, S. M., Marzouki, Riadh, Aouaini, Fatma, El-Shorbagy, M. A., Dahari, Mahidzal, Shah, Said Anwar, Suthar, D. L.
Format Journal Article
LanguageEnglish
Published New York Hindawi 2022
Hindawi Limited
Subjects
Brownian motion
Efficiency
Entropy
Finite volume method
Flow velocity
Fluid flow
Fluid friction
Free convection
Friction
Heat conductivity
Heat flux
Heat transfer
Investigations
Iron oxides
Magnetic fields
Nanofluids
Nanomaterials
Nanoparticles
Rayleigh number
Simulation
Thermophoresis
Velocity gradient
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Summary:In this simulation, the nanoparticle distribution and entropy generation were studied using the Buongiorno’s developed two-phase model and magnetic field inside a porous semiannulus cavity. The influence of three terms was considered in the Buongiorno’s developed two-phase model such as Brownian motion, thermophoresis, and magnetophoresis effects. In addition, the entropy generation was assessed due to temperature and velocity gradient. The evidence showed that the effects of the magnetic field in high porosities and volume fraction of nanoparticles were remarkable on the Nusselt number and entropy generation. Also, irreversibility due to heat transfer is much greater than fluid friction.
ISSN:1687-4110
1687-4129
DOI:10.1155/2022/4761989