Abstract
The Thermal Conductance at Solid-Gas Interfaces with Different Interfacial Bonding Strengths is Calculated through Green-Kubo Equilibrium Molecular Dynamics (EMD) Simulations. Due to the Finite Size of the Simulation System, the Long-Time Integral of the Time Correlation Function of Heat Power Across the Solid-Gas Interface Exhibits an Exponential Decay, Which Contains the Information on Interfacial Thermal Conductance. If an Adsorbed Gas Layer is Formed on the Solid Surface, It is Found that the Solid-Gas Interface Needs to Be Defined at a Plane Outside the Adsorbed Layer So as to Obtain the Correct Result from the Green-Kubo Formula. the EMD Simulation Result Agrees Very Well with that Obtained from Nonequilibrium Molecular Dynamics Simulations. by Calculating the Average Solid-Gas Interaction Time as a Function of Solid-Gas Interaction Strength, We Find the Incident Gas Atoms Thermalize with the Metal Surface Much More Rapidly When the Surface is Covered by Adsorbed Gas Molecules. © 2013 American Physical Society.
Recommended Citation
Z. Liang et al., "Equilibrium and Nonequilibrium Molecular Dynamics Simulations of Thermal Conductance at Solid-Gas Interfaces," Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, vol. 87, no. 2, article no. 22119, American Physical Society, Feb 2013.
The definitive version is available at https://doi.org/10.1103/PhysRevE.87.022119
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
1550-2376; 1539-3755
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 American Physical Society, All rights reserved.
Publication Date
15 Feb 2013
PubMed ID
23496472
