论文标题
固体和固体界面的局部界面热抗性的分子动力学研究：水和纳米刺激的表面
Molecular Dynamic Study of Local Interfacial Thermal Resistance of Solid-Liquid and Solid-Solid Interfaces: Water and Nanotextured Surface
论文作者
论文摘要
空调和冰箱的性能降解是由表面上的霜冻形成和粘附引起的。在本研究中，通过经典的分子动力学模拟，我们研究了纳米刺的表面特性的方式和多少，例如表面润湿性和几何形状，影响了固体壁和水/冰之间的界面热耐药性（ITR）。界面区域的ITR在水和冰状态下都是可比的。随着纳米结构差距变得更狭窄，界面区域的ITR减少了。局部ITR与局部H2O分子密度的负相关性较弱，而与H2O分子的相无关。随着局部密度的增加，局部ITR降低。当更多的H2O分子位于接近区域时，通过分子间相互作用将更多的热能通过材料界面传递，而该区域比第一个吸附层峰更接近PT实心壁。当H2O分子处于固体壁上的晶体形式时，接近分子下降，然后局部ITR显着增加。
Degradation in performances of air conditioners and refrigerators is caused by a frost formation and adhesion on the surface. In the present study, by means of the classical molecular dynamics simulation, we investigate how and how much the nanotextured surface characteristics, such as surface wettability and geometry, influenced the interfacial thermal resistance (ITR) between the solid wall and the water/ice. The ITR of the interfacial region was comparable in both the water and the ice states. As the nanostructure gaps became narrower, the ITR of the interfacial region decreased. The local ITR had a weak negative correlation with the local H2O molecule density regardless of the phase of the H2O molecules. The local ITR decreased as the local density increased. The greater amount of the thermal energy was transferred through the material interface by means of the intermolecular interaction when more the H2O molecules were located in the proximity area, which was closer to the Pt solid wall than the first adsorption layer peak. When the H2O molecules were in the crystal form on the solid wall, the proximity molecules decreased, and then the local ITR significantly increased.
