Numerical simulation of bubble flows by the lattice Boltzmann method
Numerical simulation of bubble flows by the lattice Boltzmann method
复制标题
DOI：
10.1016/j.future.2003.12.008
复制
发表时间：
2004-08
期刊：
影响因子：
--
通讯作者：
T. Inamuro;T. Ogata;F. Ogino
中科院分区：
文献类型：
--
作者：
T. Inamuro;T. Ogata;F. Ogino
提出了大密度比两相非混相流体的晶格玻尔兹曼方法。利用投影法解决了处理大密度比的困难。该方法可以模拟密度比高达1000的两相流体流动。将该方法应用于液体中单个气泡上升和方形管道中多个气泡上升的模拟。在不同Morton数和Eötvös数下，单泡的末端形状和末端雷诺数与现有实验数据吻合较好。以方形管道中冒出的气泡为例，说明了复杂的界面非定常结构和流场。
A lattice Boltzmann method for two-phase immiscible fluids with large density ratios is proposed. The difficulty in the treatment of large density ratio is resolved by using the projection method. The method can simulate two-phase fluid flows with the density ratio up to 1000. The method is applied to the simulations of a single rising bubble in liquid and many bubbles rising in a square duct. The terminal shapes and the terminal Reynolds numbers of the single bubble for various Morton and Eötvös numbers are in good agreement with available experimental data. The complicated unsteady structures of the interface and the flow field are illustrated in many bubbles rising in a square duct.