南京理工大学学报（自然科学版）2017，Vol.41Issue(6)：773-778,6.DOI:10.14177/j.cnki.32-1397n.2017.41.06.018
基于格子Boltzmann方法的热毛细对流数值模拟研究
Numerical simulation of thermocapillary convection based on lattice Boltzmann method
摘要
Abstract
Thermocapillary convection in a differentially heated rectangular cavity is simulated using the double density distribution function based lattice Boltzmann method to study the effect of Prandtl number( Pr ) and aspect ratio ( Ar ) . The velocity deviation rate and the deviation temperature are calculated to quantify the influence of the fluctuation of velocity and thermocapillary convection on the temperature distribution. The results show that the thermocapillary convection is enhanced with decreasing Pr(0. 1～100)or increasing Ar(0. 2～2);the fluctuation of velocity is enhanced and ac-companied by the energy accumulation near the cold wall end as flow enhances;the difference in the temperature field is tiny as Pr varies from 10 to 100;the velocity and temperature distributions along the free surface are not sensitive to Ar as Ar≥1 .关键词
格子玻尔兹曼方法/热毛细对流/数值模拟/矩形液池/双密度分布函数Key words
lattice Boltzmann method/thermocapillary convection/numerical simulation/rectangular cavity/double density distribution function分类
数理科学引用本文复制引用
朱诚,郑林..基于格子Boltzmann方法的热毛细对流数值模拟研究[J].南京理工大学学报（自然科学版）,2017,41(6):773-778,6.基金项目
国家自然科学基金(51506097) （51506097）
江苏省自然科学基金(BK20130750) （BK20130750）
