【摘要】 纳米通道技术如今越来越多地在生活中得到应用,因此需要对流体在纳米通道内的流动机理有深入的研究。本文采用分子动力学的方法,对He气在纳米通道内的吸附情况进行了模拟研究。研究发现,温度、压力和纳米通道的材质对气体的吸附都有影响。较高的温度会降低气体在纳米通道内壁的吸附,降低压力也会减少气体在纳米通道内的吸附量,并且在Fe、Cu和Al这3种常规材料中,Cu纳米通道对气体的吸附能力最弱。模拟结果与相关实验结果吻合。更多还原

【Abstract】 Nanochannel technology is more and more applied to life now, and it is necessary to study the fluid flow mechanism in the nanochannel deeply. In this paper, a physical model is established, then the He gas adsorption in the nanochannel is investigated by molecular dynamics simulations. The study found that the temperature, the pressure and the material of nanochannel have significant influence on gas adsorption. Higher temperature and lower pressure will decrease the amount of gas adsorption in the nanochannel. Among the three conventional materials of Fe, Cu and Al, the less adsorption amount is on Cu nanochannel than those on Fe and Al ones. The simulation results agree with the experimental results very well.更多还原