化工学报2012，Vol.63Issue(10)：3057-3061,5.DOI:10.3969/j.issn.0438-1157.2012.10.008
纳米流体液滴在水平加热面上的变形行为特性
Deformation behavior of nanofluid droplet on heated horizontal surface
摘要
Abstract
Heat transfer performance of nanofluid is superior to that of original pure fluid because the suspended nanoparticles remarkably increase the thermal conductivity of the mixture and improve its capability of energy exchange. The evaporation of nanofluid droplet will be widely applied in the field of vehicle, spaceflight, voyage, shipping and electron. The hydrokinetics, theories on heat and mass transfer and material science, and the behavior dynamics of free interface are involved in the evaporation process of nanofluid droplets. In this study, lattice Boltzmann method is applied to simulate the deformation of nanofluid droplet when it evaporates on a heated horizontal surface. A double distribution model is adopted, in which D2Q9 is used to calculate the velocity distribution while D2Q5 is used for calculation of temperature distribution. The results show that the nanofluid droplet experiences pinning and depinning stages. Because of the strong pinning action of nanoparticles, the ring sediment is specially investigated at the end of evaporation, which shows the characteristics of nanofluid as the result of strong pinning action with the Brownian motion and the interaction between the particles considered. The simulation results are in good agreements with the experimental results in literature.关键词
格子Boltzmann方法/纳米流体/液滴/蒸发Key words
lattice Boltzmann method/ nanofluid/ droplet/ evaporation分类
能源科技引用本文复制引用
郭亚丽,徐鹤函,沈胜强..纳米流体液滴在水平加热面上的变形行为特性[J].化工学报,2012,63(10):3057-3061,5.基金项目
国家自然科学基金项目(50906005) （50906005）
中国博士后科学基金面上项目(20100481221) （20100481221）
中国博士后科学基金特别资助项目(201104591). （201104591）
