Journal ArticleDOI
Lattice Boltzmann Method for simulation of magnetic field effect on hydrothermal behavior of nanofluid in a cubic cavity
TLDR
In this article, the Lattice Boltzmann Method is applied in order to simulate the magnetic field effect on nanofluid flow and convective heat transfer in a cubic cavity.Abstract:
In this study, Lattice Boltzmann Method is applied in order to simulate the magnetic field effect on nanofluid flow and convective heat transfer in a cubic cavity. The enclosure is filled with Al2O3–water nanofluid. Koo–Kleinstreuer–Li correlation is applied to calculate the effective viscosity and thermal conductivity of nanofluid. The effects of active parameters such as Hartmann number, nanoparticle volume fraction and Rayleigh number on flow and heat transfer have been examined. Results indicate that enhancement in heat transfer has direct relationship with Hartmann number while it has inverse relationship with Rayleigh number. Nusselt number increases with increase of nanoparticle volume fraction and Rayleigh number while it decreases with increase of Hartmann number.read more
Citations
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Journal ArticleDOI
Forced convection heat transfer in a semi annulus under the influence of a variable magnetic field
TL;DR: In this article, forced convection heat transfer in a semi annulus lid under the influence of a variable magnetic field was studied, and the authors used the Control Volume based Finite Element Method (CVFEM) to solve the governing equations considering both Ferrohydrodynamic (FHD) and Magnetohydrodynamics (MHD) effects.
Journal ArticleDOI
Effect of non-uniform magnetic field on forced convection heat transfer of Fe3O4–water nanofluid
TL;DR: In this article, force convection heat transfer in a lid driven semi annulus enclosure is studied in presence of non-uniform magnetic field and the calculations were performed for different governing parameters namely, the Reynolds number, nanoparticle volume fraction and Hartmann number.
Journal ArticleDOI
Nanofluid convective heat transfer using semi analytical and numerical approaches: A review
TL;DR: In this paper, the authors provide a brief review of researches on nanofluid flow and heat transfer via semi-analytical and numerical methods and show that the Nusselt number is an increasing function of nanoparticle volume fraction.
Journal ArticleDOI
Effect of space dependent magnetic field on free convection of Fe3O4–water nanofluid
TL;DR: In this article, the effect of spatially variable magnetic field on ferrofluid flow and heat transfer is investigated and the combined effects of ferrohydrodynamic and magnetohydrodynamic have been taken into account.
Journal ArticleDOI
Lattice Boltzmann simulation of nanofluid heat transfer enhancement and entropy generation
TL;DR: In this article, the effects of various governing parameters such as nanofluid type, Rayleigh number, volume fraction of nanoparticles and height of the rectangular heated body contained in the cavity on hydrothermal characteristics are studied.
References
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Journal ArticleDOI
Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids
TL;DR: In this article, a model is developed to analyze heat transfer performance of nanofluids inside an enclosure taking into account the solid particle dispersion, where the transport equations are solved numerically using the finite-volume approach along with the alternating direct implicit procedure.
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Natural convection of air in a square cavity: A bench mark numerical solution
TL;DR: In this paper, the authors used mesh refnement and extrapolation to obtain an accurate solution of the equations describing two-dimensional natural convection in a square cavity with differentially heated side walls.
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The lattice Boltzmann equation: theory and applications
TL;DR: The basic elements of the theory of the lattice Boltzmann equation, a special lattice gas kinetic model for hydrodynamics, are reviewed in this paper, together with some generalizations which allow one to extend the range of applicability of the method to a number of fluid dynamics related problems.
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Role of Brownian motion in the enhanced thermal conductivity of nanofluids
Seok Pil Jang,Stephen U. S. Choi +1 more
TL;DR: In this paper, the Brownian motion of nanoparticles at the molecular and nanoscale level is a key mechanism governing the thermal behavior of nanoparticle-fluid suspensions (nanofluids).
Journal ArticleDOI
Thermal conductivity of nanoscale colloidal solutions (nanofluids)
TL;DR: Through an order-of-magnitude analysis of various possible mechanisms, convection caused by the Brownian movement of these nanoparticles is primarily responsible for the enhancement in k of these colloidal nanofluids.