重庆大学学报：自然科学版2012，Vol.35Issue(9)：106-113,8.
二维方腔内热表面张力流的格子Boltzmann方法模拟
Simulation of thermocapillary flow in a two dimensional cavity with lattice Boltzmann method
摘要
Abstract
Thermocapillary flow driven by an unbalanced surface tension plays the most important role for mass and heat transport in floating zone melt crystal growth under microgravity. The authors develop both a serial and a parallel codes with lattice Bhatnagar-Gross-Krook (BGK) model using two distribution functions, and numerically study the thermocapillary flow in a two dimensional square cavity with a single free surface under microgravity condition. The serial code is developed by combining collision and propagation step, using a temporary array to continuously read distribution functions, and its performance is improved two times faster than the code with separating the collision and propagation step. The MPI parallel code is proposed utilizing one dimensional partitioning and non-blocking communication. The accurate and reliable results are achieved with both the serial and parallel codes by comparing with CFD results simulated by the finite volume method; the MPI parallel code has high performance.关键词
格子Boltzmann方法/并行计算/热表面张力流/消息传递Key words
lattice Boltzmann method/MPI parallel computing/thermocapillary flow/message passing分类
力学引用本文复制引用
梁功有,曾忠,姚丽萍,张良奇,邱周华,梅欢..二维方腔内热表面张力流的格子Boltzmann方法模拟[J].重庆大学学报：自然科学版,2012,35(9):106-113,8.基金项目
基金项目：国家自然科学基金资助项目 （）
重庆市科委自然科学基金资助项目 （）
