Molecular dynamics study on evaporation and condensation characteristics of thin film liquid Argon on nanostructured surface in nano-scale confinement

2017 ◽  
Author(s):  
Mohammad Nasim Hasan ◽  
Kazi Fazle Rabbi ◽  
Arefiny Sabah ◽  
Jannat Ahmed ◽  
Subrata Kumar Kuri ◽  
...  
Keyword(s):  
Thin Film ◽  
Molecular Dynamics ◽  
Liquid Argon ◽  
Nanostructured Surface ◽  
Evaporation And Condensation ◽  
Nano Scale

Evaporation characteristics of thin film liquid argon in nano-scale confinement: A molecular dynamics study

2016 ◽  
Author(s):  
Mohammad Nasim Hasan ◽  
Sheikh Mohammad Shavik ◽  
Kazi Fazle Rabbi ◽  
Mominul Haque
Keyword(s):  
Thin Film ◽  
Molecular Dynamics ◽  
Liquid Argon ◽  
Nano Scale

scholarly journals Thermal transport during thin-film argon evaporation over nanostructured platinum surface: A molecular dynamics study

2018 ◽  
Vol 232 (2-3) ◽  
pp. 83-91
Author(s):  
Mohammad Nasim Hasan ◽  
Sheikh Mohammad Shavik ◽  
Kazi Fazle Rabbi ◽  
Khaled Mosharraf Mukut ◽  
Md. Muntasir Alam
Keyword(s):  
Thin Film ◽  
Molecular Dynamics ◽  
Thermal Transport ◽  
Molecular System ◽  
Dynamics Simulation ◽  
Sudden Increase ◽  
Nanostructured Surface ◽  
Surface Wetting ◽  
Platinum Surface ◽  
Fluid Interaction

Investigation of thermal transport characteristics of thin-film liquid evaporation over nanostructured surface has been conducted using molecular dynamics simulation with particular importance on the effects of the nanostructure configuration for different wall–fluid interaction strengths. The nanostructured surface considered herein comprises wall-through rectangular nanoposts placed over a flat wall. Both the substrate and the nanostructure are of platinum while argon is used as the evaporating liquid. Two different wall–fluid interaction strengths have been considered that essentially emulate both hydrophilic and hydrophobic wetting conditions for three different nanostructure configurations. The argon–platinum molecular system is first equilibrated at 90 K and then followed by a sudden increase in the wall temperature at 130 K that induces evaporation of argon laid over it. Comparative effectiveness of heat and mass transfer for different surface wetting conditions has been studied by calculating the wall heat flux and evaporative mass flux. The results obtained in this study show that heat transfer occurs more easily in cases of nanostructured surfaces than in case of flat surface. Difference in behavior of argon molecules during and after the evaporation process, that is, wall adsorption characteristics, has been found to depend on the surface wetting condition as well as on presence and configuration of nanostructure. A thermodynamic approach of energy balance shows reasonable agreement with the present molecular dynamics study.

Molecular Dynamics Simulation of Evaporation of a Thin Liquid Argon Layer in a Closed System

2003 ◽  
Author(s):  
Y. W. Wu ◽  
Chin Pan
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Liquid Film ◽  
Closed System ◽  
Thin Liquid Film ◽  
Liquid Argon ◽  
Dynamics Simulation ◽  
Jones Potential ◽  
Evaporation And Condensation ◽  
Simulation Based

Evaporation of a thin liquid film is of significant fundamental importance for both science and engineering applications. This work investigates the evaporation of a thin liquid argon layer into vacuum employing molecular dynamics simulation based on the Lennard-Jones potential. The simulation results demonstrate that the net evaporation rate of an ultra-thin liquid film into vacuum in a closed system may be modeled by the balance of evaporation and condensation based on the Schrage model. The evaporation/condensation coefficient and the non-Maxwellian factor may thus be evaluated. However, the coefficient thus obtained is sensitive to the dimension in the direction normal to the surface. It is also found that the mean temperature for the interface region is 2–3 K lower, while the temperature fluctuations are more violent, than that inside the liquid.

Correction: Molecular Dynamics Simulations of Nano-scale Icing Phenomena (Invited)

2020 ◽  
Author(s):  
Dong Meng ◽  
Amir Afshar ◽  
Randa Bassou ◽  
David S. Thompson ◽  
Jing Zong ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Nano Scale ◽  
Dynamics Simulations
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