Molecular dynamics simulation of droplet nucleation and growth on a rough surface: revealing the microscopic mechanism of the flooding mode

Dong, Ning; Tang, G.H.

doi:10.1039/c8ra04003f

Cited by 40 publications

(22 citation statements)

References 39 publications

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“…7 (Color online) Ultra-thin flat heat pipes using forest-like porous copper as the wick [81] . (a)-(d) The conception of forest-like array for flat heat pipes: (a) The common Ω-like groove for heat pipes; (b) the Ω-like groove can be formed between the trees; (c) the forest can form interconnected Ω-like grooves; (d) the SEM image of a typical forestlike wick; (e) the fabrication of the ultra-thin flat heat pipes; (f) the evaporation temperature of UTFHP and copper plates under different heating power; (g) surface temperature distribution (infrared image) of copper plates and the ultra-thin flat heat pipe at 6 W 结构多孔表面应用于冷凝传热的相关研究可以参考 Liao等人 [87] 、Xie等人 [88] 、Wen等人 [89] 、Ma等人 [90] 、 Niu和Tang [91] 、Chen等人 [92] 、Peng等人 [93] 的工作, 本文不再赘述.…”

Section: 那么是不是越亲水的表面沸腾传热效果越好mentioning

confidence: 99%

Porous surfaces with structural gradient: Enhancing boiling heat transfer and its application in phase-change devices

Luo

Wang

et al. 2020

Chin. Sci. Bull.

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Heat transfer of phase change materials (PCMs) and thermochemical heat storage in porous materials Chinese Science Bulletin 61, 1897 (2016); Phase change driving mechanism and modeling for heat pipe with porous wick Chinese Science Bulletin 54, 4000 (2009); Analysis of solid-liquid phase change heat transfer enhancement Science in China Series E-Technological Sciences 45, 569 (2002); Preparation and characterization of magnetic phase-change microcapsules

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Section: 那么是不是越亲水的表面沸腾传热效果越好mentioning

confidence: 99%

Porous surfaces with structural gradient: Enhancing boiling heat transfer and its application in phase-change devices

Luo

Wang

et al. 2020

Chin. Sci. Bull.

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“…Various theoretical and semiempirical models have been proposed to describe the relationship between surface structure and nucleation, for example, interfacial free energy analysis and cluster theory [16,17,19,74]. To obtain more detailed information on the droplet nucleation in micro/nanostructures, many numerical modeling methods have been developed such as the Gibbs free energy analyses, finite element method, lattice Boltzmann method, lattice density functional method, and molecular dynamics (MD) simulations [13,18,[75][76][77][78][79][80].…”

Section: Nucleation and Droplet Size Distributionmentioning

confidence: 99%

Advances in Dropwise Condensation: Dancing Droplets

Wen¹,

Ma²

2020

21st Century Surface Science - A Handbook

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Vapor condensation is a ubiquitous phase change phenomenon in nature, as well as widely exploited in various industrial applications such as power generation, water treatment and harvesting, heating and cooling, environmental control, and thermal management of electronics. Condensation performance is highly dependent on the interfacial transport and its enhancement promises considerable savings in energy and resources. Recent advances in micro/nano-fabrication and surface chemistry modification techniques have not only enabled exciting interfacial phenomenon and condensation enhancement but also furthered the fundamental understanding of interfacial wetting and transport. In this chapter, we present an overview of dropwise condensation heat transfer with a focus on improving droplet behaviors through surface design and modification. We briefly summarize the basics of interfacial wetting and droplet dynamics in condensation process, discuss the underlying mechanisms of droplet manipulation for condensation enhancement, and introduce some emerging works to illustrate the power of surface modification. Finally, we conclude this chapter by providing the perspectives for future surface design in the field of condensation enhancement.

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“…Molecular dynamics (MD) simulation has been widely used to investigate the insights into the phenomena of fluid flow and heat transfer in nanoscale. MD simulations [9]- [16] have demonstrated features during the onset, early and developed stages of surface condensation. In the case of condensation in a slit pore, the rate of nucleation is higher than that in the homogenous vapor at the same vapor density and temperature, irrespective of the strength of attraction between the wall and vapor molecules [9].…”

Section: Introductionmentioning

confidence: 99%

Dependence of nano-confined surface condensation on tangentially external force field

Sheng

Sun

et al. 2019

Journal of Molecular Liquids

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Molecular dynamics (MD) simulations were conducted to investigate the dependence of nano-confined surface condensation on tangentially external force filed. The dynamic behaviors of surface condensation were simulated on a smooth solid surface with fixed wettability (denoted by β) and different external force fields (denoted by fe), and on surfaces with different β and fixed fe. The heat transfer analysis shows that fe, as a bulk factor, indirectly influences the interfacial thermal resistance (R) by direct influence on surface condensation resulting from the viscous and frictional dissipated heats. This is because the dissipated heats result in superheat of the vapor, leading to the delay or elimination of onset of surface condensation. This finding extends the general understanding that R is only dependent on the interfacial factors, such as β and surface topology. The energy balance analysis shows that, for condensation cases, the largest proportion of the heat transferred through the fluidsolid interface is attributed to the change in the internal energy, while for non-condensation cases, it is attributed to the dissipated heats due to fe. As fe increases or β decreases, the dissipated heats increase and gradually take over the total heat transferred from fluid to solid, which finally reduces or suppresses the occurrence of surface condensation.

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Molecular dynamics simulation of droplet nucleation and growth on a rough surface: revealing the microscopic mechanism of the flooding mode

Abstract: Droplet nucleation and growth have a significant influence on dropwise condensation heat transfer.

Cited by 40 publications

References 39 publications

Porous surfaces with structural gradient: Enhancing boiling heat transfer and its application in phase-change devices

Porous surfaces with structural gradient: Enhancing boiling heat transfer and its application in phase-change devices

Advances in Dropwise Condensation: Dancing Droplets

Dependence of nano-confined surface condensation on tangentially external force field

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