本文采用分子动力学方法对纳米流体在金属表面的沸腾现象进行研究,揭示纳米流体的沸腾换热机制.模拟系统分为蒸汽氩、液体氩、固体铜板和铜纳米颗粒四部分.着重探讨了近壁区的纳米颗粒对沸腾换热的影响.在高过热度和低过热度两种加热情况下,探讨纳米流体和基础流体的沸腾现象.结果表明纳米颗粒的添加对沸腾过程有显著的影响:氩的温度、系统净蒸发率显著提高.近壁区的纳米颗粒做无规则运动并且不随流体运动.颗粒的尺寸及过热度对强化效果有显著影响.“,”The pool boiling of nanofluids on the metal surface was investigated by molecular dynamics simulations to reveal the mechanisms responsible for the favorable heat transfer properties of nanofluids. The simulated system was consisted by four regions: vapor argon, liquid argon, solid copper and nanoparticles copper. Particularly, the nanoparticles were placed near the metal surface. Two superheated temperatures were considered. The results showed that the fluid temperature and net evaporation rate were increased by the addition of nanoparticles. The nanoparticles had random movement and did not move with the fluid. It was also observed that the nanoparticles size and the superheated temperature had significant effect on the enhancement effects.