Lattice Boltzmann simulation of alumina-water nanofluid in a square cavity |
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| Authors: | Yurong He Cong Qi Yanwei Hu Bin Qin Fengchen Li Yulong Ding |
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| Affiliation: | (1) School of Energy Science & Engineering, Harbin Institute of Technology, 150001 Harbin, China;(2) Institute of Particle Science and Engineering, University of Leeds, LS2 9JT Leeds, UK |
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| Abstract: | A lattice Boltzmann model is developed by coupling the density (D2Q9) and the temperature distribution functions with 9-speed
to simulate the convection heat transfer utilizing Al2O3-water nanofluids in a square cavity. This model is validated by comparing numerical simulation and experimental results over
a wide range of Rayleigh numbers. Numerical results show a satisfactory agreement between them. The effects of Rayleigh number
and nanoparticle volume fraction on natural convection heat transfer of nanofluid are investigated in this study. Numerical
results indicate that the flow and heat transfer characteristics of Al2O3-water nanofluid in the square cavity are more sensitive to viscosity than to thermal conductivity. |
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