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.


Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

1550-2376; 1539-3755

Document Type

Article - Journal

Document Version

Final Version

File Type





© 2023 American Physical Society, All rights reserved.

Publication Date

15 Feb 2013

PubMed ID