TY - JOUR
TI - Lattice Boltzmann simulation of Rayleigh-Benard convection in enclosures filled with Al2O3-water nanofluid
AU - Cai Weihua
AU - Zheng Zhifeng
AU - Huang Changye
AU - Wang Yue
AU - Zheng Xin
AU - Zhang Hongna
JN - Thermal Science
PY - 2018
VL - 22
IS - 12
SP - 535
EP - 545
PT - Article
AB - In order to clarify the controversies for the role of nanoparticles on heat transfer in natural convection, lattice Boltzmann method is used to investigate Rayleigh-Benard convection heat transfer in differentially-heated enclosures filled with Al2O3-water nanofluids. The results for streamline and isotherm contours, vertical velocity, and temperature profiles as well as the local and average Nusselt number are discussed for a wide range of Rayleigh numbers and nanoparticle volume fractions (0 ≤ Ф ≤ 5%). The results show that with the increase of Rayleigh number and nanoparticles loading, Nuave increases. It is suggested that the addition of nanoparticles can enhance the heat transfer in Rayleigh-Benard convection.