A new parameter unifying criterion for rectangular surface structure influences on vaporization nucleation: A molecular dynamics study

IF 6.1 2区 工程技术 Q2 ENERGY & FUELS
Xiaojia Li , Wei Deng , Song Ni , Guopeng Yu , Jiyun Zhao , Pingjian Ming
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引用次数: 0

Abstract

This study investigates the nucleation behavior on nanostructured surfaces and its impact on heat transfer efficiency. The significance of this research lies in the fact that accurate characterization of surface effects is crucial for optimizing heat transfer systems, which have profound implications for various industrial applications. Using molecular dynamics methods, we systematically analyze the influence of rectangular surface structures with varying heights, widths, and densities on nucleation behavior. Our findings reveal that traditional surface roughness metrics fail to capture critical surface details, limiting their ability to accurately describe the effects of different surfaces on nucleation. Furthermore, we observe that surface structures significantly influence nucleation by altering local liquid film thicknesses. To address these limitations, we propose a novel parameter that combines corrected effective liquid film thickness with surface roughness to provide a more comprehensive characterization of the nucleation process. Through computational modeling, we validate the effectiveness of this parameter in predicting heat flux density, heat transfer coefficient, and surface thermal resistance across different rectangular surface structures. The results of this study clarify the mechanisms through which surface structures affect nucleation, offering a more precise tool for characterizing these effects. This enhanced understanding not only advances the theoretical framework of nucleation science but also has practical implications for the design of more efficient heat transfer systems in various industrial settings. The novelty of this work lies in the introduction of a new parameter that surpasses previous efforts in the literature by providing a more accurate quantitative prediction of the impact of surface structures on nucleation and heat transfer efficiency.
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来源期刊
Applied Thermal Engineering
Applied Thermal Engineering 工程技术-工程:机械
CiteScore
11.30
自引率
15.60%
发文量
1474
审稿时长
57 days
期刊介绍: Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.
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