期刊
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
卷 125, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2021.105315
关键词
Argon vapor; Molecular dynamics; Rapid boiling; Alternated hydrophobic structures; Alternated hydrophilic structures
资金
- National Natural Science Foundation of China [51875417, 51975425]
In this study, the impact of different surface structures on the heat transfer efficiency of argon vapor film was simulated using molecular dynamics method. The results showed that the heat transfer efficiency of alternating hydrophobic surface structures is lower compared to pure hydrophilic surface, while the heat transfer efficiency of alternating hydrophilic surface structures is superior.
In this article, molecular dynamics method is used to simulate argon vapor film generated by the heat transfer theory of pure wettability surface and alternated hydrophobic and hydrophilic structures surface rapid boiling. Throughout the simulation process, solid platinum is used for nanostructures and wall surfaces. The shape of the nanostructures is a triangular prism model, and the liquid vapor film is argon atoms. The simulation phase is divided into a relaxation phase and a heating phase. The temperature in the relaxation phase is maintained at 86 K, and the temperature in the heating phase is set to 250 K. The simulation results show that for the alternated hydrophobic structures surface, due to the addition of hydrophobic nanostructures, the force is weakened, and its heat transfer efficiency is lower than that of a pure hydrophilic wall surface. Except for the smooth surface, the evaporation efficiency is lower than that of the pure hydrophilic wall. For alternated hydrophilic structures surface, the evaporation efficiency and heat transfer efficiency are better than pure hydrophobic walls.
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