Journal ArticleDOI
3D investigation of natural convection of nanofluids in a curved boundary enclosure applying lattice Boltzmann method
TLDR
In this paper, a multiple relaxation times lattice Boltzmann method (MRT-LBM) has been used to investigate the natural convection behavior of nanofluids in an enclosure.Abstract:
Purpose
The purpose of this paper is to investigate the natural convection behavior of nanofluids in an enclosure. The enclosure is a 3D capsule with curved boundaries filled with TiO2-water nanofluid.
Design/methodology/approach
In this paper, a multiple relaxation times lattice Boltzmann method (MRT-LBM) has been used. Two-component LBM has been conducted to consider the interaction forces between nanoparticles and the base fluid.
Findings
Results show that the enhanced Nusselt number (Nu*) increases with the increase in volume fraction of nanoparticles (ϕ) and Ra number and decrease of nanoparticle size (λ). Additionally, the findings indicate that increasing volume fraction beyond a certain value decreases Nu*.
Originality/value
This paper presents a MRT model of lattice Boltzmann in a 3D curved enclosure. A correlation is also presented based on the current results for Nu* depending on Ra number, volume fraction and size of nanoparticles. Furthermore, a comparison for the convergence rate and accuracy of this model and the SIMPLE algorithm is presented.read more
Citations
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Journal ArticleDOI
Effect of nanofluids on heat transfer and cooling system of the photovoltaic/thermal performance
TL;DR: In this paper, a three-dimensional numerical model of photovoltaic thermal (PVT) with new baffle-based thermal collector system has been developed and solved using finite element method-based COMSOL multyphysics software.
Journal ArticleDOI
Three-dimensional analysis on natural convection inside a T-shaped cavity with water-based CNT–aluminum oxide hybrid nanofluid
Mohammed A. Almeshaal,K. Kalidasan,Faouzi Askri,R. Velkennedy,Ali Sulaiman Alsagri,Lioua Kolsi +5 more
TL;DR: In this article, a three-dimensional numerical simulation on natural convection inside the T-shaped cavity, filled with water-based hybrid nanofluid of CNT-aluminum oxide is performed by vorticity-vector potential formalism.
Journal ArticleDOI
LBM investigation of a Cu-water nanofluid over various configurations of pipes in the mixed convection flow
Journal ArticleDOI
Numerical simulation of MHD mixed convection flow of Al2O3–water nanofluid over two hot obstacles
TL;DR: In this article , the problem of cooling two hot blocks in a novel geometry using magnetohydrodynamic flow of Al2O3-water nanofluid has been studied utilizing a D2Q9 Lattice Boltzmann Model.
References
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Journal ArticleDOI
Thermal Conductivity of Heterogeneous Two-Component Systems
R. L. Hamilton,O. K. Crosser +1 more
Journal ArticleDOI
Transport properties of two finite armchair graphene nanoribbons
Luis Rosales,J. W. González +1 more
TL;DR: This work presents a theoretical study of the transport properties of two finite and parallel armchair graphene nanoribbons connected to two semi-infinite leads of the same material using a single Π-band tight binding Hamiltonian and based on Green’s function formalisms within a real space renormalization techniques.
Journal ArticleDOI
Heat Transfer in Nanofluids—A Review
TL;DR: In this paper, the authors present an exhaustive review of the literature in this area and suggest a direction for future developments, including heat transfer, material science, physics, chemical engineering and synthetic chemistry.