物理学报Issue(8)：1-8,8.DOI:10.7498/aps.62.084703
热对流条件下颗粒沉降的格子Boltzmann方法模拟
Lattice Boltzmann simulation of the sedimentation of particles with thermal convection∗
摘要
Abstract
We investigate numerically the sedimentations of solid particles in a fluid with different temperatures using a lattice Boltzmann method. The sedimentation processes of a single particle in an isothermal, hot, or cool fluid are first simulated, and then the sedimen-tations of two particles with different temperatures are carefully studied. It is found that the dynamics of the two particles with the same temperature is closely related to the Reynolds number and the Grashof number, while the process of two particles with different temperatures are different from that of two particles with the same temperature. The cold particle will eventually descend under the hot particle, and the drafting and kissing phenomenon occurs as Re is large, while the cold particle falls far from the hot one as Re is small.关键词
格子Boltzmann方法/颗粒沉降/热对流Key words
lattice Boltzmann method/two particles sedimentation/thermal convection引用本文复制引用
毛威,郭照立†,王亮..热对流条件下颗粒沉降的格子Boltzmann方法模拟[J].物理学报,2013,(8):1-8,8.基金项目
国家高技术研究发展计划(批准号:2010AA09z305)和高等学校博士学科点专项科研基金(批准号:20110073130003)资助的课题.*Project supported by the National High Technology Research and Development Program of China (Grant No.2010AA09z305) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No.20110073130003) （批准号:2010AA09z305）
