Lattice Boltzmann simulation of 3D natural convection in a cuboid filled with KKL-model predicted nanofluid using Dual-MRT model

Purpose This study aims to investigate the three-dimensional natural convection and entropy generation in a cuboid enclosure filled with CuO-water nanofluid. Design/methodology/approach The lattice Boltzmann method is used to solve the problem numerically. Two different multiple relaxation time (MRT...

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Bibliographic Details
Published in:International journal of numerical methods for heat & fluid flow 2019-01, Vol.29 (1), p.365-387
Main Authors: Rahimi, Alireza, Kasaeipoor, Abbas, Hasani Malekshah, Emad, Rashidi, Mohammad Mehdi, Purusothaman, Abimanyu
Format: Article
Language:English
Subjects:
Boundary conditions
Brownian motion
Computational fluid dynamics
Computer simulation
Convection
Dynamic viscosity
Electrons
Enclosures
Entropy
Fluid flow
Fluid friction
Fluids
Free convection
Friction
Heat conductivity
Heat transfer
Magnetic fields
Mathematical models
Methods
Nanofluids
Nanoparticles
Numerical analysis
Physical properties
Rayleigh number
Relaxation time
Simulation
Temperature
Temperature distribution
Temperature fields
Thermal conductivity
Three dimensional analysis
Three dimensional models
Velocity
Viscosity
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Summary:Purpose This study aims to investigate the three-dimensional natural convection and entropy generation in a cuboid enclosure filled with CuO-water nanofluid. Design/methodology/approach The lattice Boltzmann method is used to solve the problem numerically. Two different multiple relaxation time (MRT) models are used to solve the problem. The D3Q7–MRT model is used to solve the temperature field, and the D3Q19 is used to solve the fluid flow of natural convection within the enclosure. Findings The influences of different Rayleigh numbers (103 < Ra < 106) and solid volume fractions (0 
ISSN:0961-5539
1758-6585
DOI:10.1108/HFF-07-2017-0262