物理化学学报2009，Vol.25Issue(12)：2537-2542,6.
纳米通道内表面浸润性对气泡的作用
Effects of Surface Wettability on Bubbles in Nanochannels
摘要
Abstract
Molecular dynamics simulations were carried out to study the distribution and movement of bubbles in nanochannels with different wettabilities when the fluids were driven by mass force. A method for calculating the velocity of a bubble in a nanochannel was presented. Results reveal that bubbles are present in the middle of nanochannels with hydrophilic surfaces and their velocities are close to but lower than the flow velocity in the middle of the nanochannel. At higher potential energies, the bubbles are larger because the surface absorbs more particles.Otherwise, the bubbles would be smaller. Two bubbles are symmetrical on both surfaces of the nanochannel when their surfaces are superbydrophobic and their velocities are close to but larger than the flow velocity at the edge of the nanochannel. The fluid flow speeds up as the interaction decreases between fluid molecules and wall particles while the slip velocity gradually changes from negative to positive.关键词
分子动力学/表面浸润性/纳米气泡/纳米流动/纳米通道Key words
Molecular dynamics/ Surface wettability/ Nanobubble/ Nanoflow/ Nanochannel分类
化学化工引用本文复制引用
解辉,刘朝..纳米通道内表面浸润性对气泡的作用[J].物理化学学报,2009,25(12):2537-2542,6.基金项目
The project was supported by the National Natural Science Foundation of China(50376077,50776101).国家自然科学基金(50375077,50776101)资助项目 （50376077,50776101）
