格子 Boltzmann 模拟条纹基底上液滴的蒸发

采用二维的格子Boltzmann方法对条纹基底上液滴蒸发进行模拟。讨论了基底润湿性区域宽度和蒸发率大小的改变对蒸发液滴三相接触线（ contact line ）运动的影响。计算结果显示当处于条纹基底上的蒸发液滴边缘接触润湿性区域时，三相接触线后退的解销联（ de-pinning ）阶段变为基部直径保持不变液滴高度降低的销联（ pinning ）阶段。另外，还发现对于同样尺寸的蒸发液滴处在宽度不同的润湿性区域的条纹基底上，销联时间和蒸发消失的时间是不同的。

Study on lattice Boltzmann simulation for evaporating droplet on patterned substrates

A two dimensional lattice Boltzmann simulation was performed to investigate the e-vaporating droplet on patterned substrates with different wettability .The contact line motion of an evaporating droplet on a patterned substrate with line -shaped hydrophilic region was numerically investigated .The effects of the width of hydrophilic region and the evaporation rate on the contact line motion were discussed .The calculated result showed the transition of the contact line motion from de -pinning to pinning when the contact line reaches to the edge of the hydrophilic region of patterned substrates .In addition , the difference in the pinning time and the evaporation time was obtained for variation of hydrophilic region on patterned substrates .