光子学报, 2018, 47 (8): 0847016, 网络出版: 2018-09-16
液体激光诱导转移的格子玻尔兹曼仿真研究
Lattice Boltzmann Simulation of Laser-induced Transfer of Liquid
激光诱导转移 格子玻尔兹曼方法 激光诱导等离子体 数值仿真 两相流模型 Laser-induced forward transfer Lattice Boltzmann method Laser-induced plasma Numerical simulation Two-phase flow model
摘要
采用介观尺度的格子玻尔兹曼方法, 结合气-液两相流模型, 对藻酸盐溶液的激光诱导液体转移进行了三维模拟.为获取气-液两相流模型的入口条件, 引入Rayleigh-Plesset方程对等离子体气泡的演化进行计算.数值模拟结果与之前的实验结果吻合, 反映了气泡形状变化和液体的向前向后转移现象.仿真研究表明液体的激光诱导转移机制主要与气泡动力学有关, 气泡的快速膨胀将引发向前转移, 而气泡的剧烈收缩是形成向后转移的主要原因.
Abstract
The mesoscopic lattice Boltzmann method and the gas-liquid two-phase flow model are used to simulate the Laser-induced Forward Transfer (LIFT) of liquid. Rayleigh-Plesset equation is introduced to calculate the evolution of the plasma bubble, so as to obtain the inlet boundary conditions for the two-phase LBM model of the LIFT. The simulation results agree well with former experimental observations. The evolution of bubble shape, the forward and backward ejections are all faithfully represented, which suggests that the dynamics of the laser-induced bubble is mainly responsible for the material transfer in LIFT. The forward liquid ejection is related to the fast expansion of the laser-induced bubble, while the backward ejection is caused by the collapse of the bubble.
黄亚军, 蔡文莱, 陈英怀, 黄志刚. 液体激光诱导转移的格子玻尔兹曼仿真研究[J]. 光子学报, 2018, 47(8): 0847016. HUANG Ya-jun, CAI Wen-lai, CHEN Ying-huai, HUANG Zhi-gang. Lattice Boltzmann Simulation of Laser-induced Transfer of Liquid[J]. ACTA PHOTONICA SINICA, 2018, 47(8): 0847016.