Thermal transport at the interface between Lennard-Jones crystals is explored via non-equilibrium molecular dynamics simulations. The vibrational properties of each crystal are varied by changing the atomic mass of the crystal. By applying a constant thermal flux across the two-crystal composite system, a steady-state temperature gradient is established and thermal boundary conductance at the interface between the crystals is calculated via Fourier’s law. With the material properties of the two crystals fixed, thermal boundary conductance can be affected by an intermediate layer inserted between the two crystals. It is found that when the interstitial layer atomic mass is between those values of the crystals comprising the interface, interfacial transport is enhanced. This layer helps bridge the gap between the different vibrational spectra of the two materials, thus enhancing thermal transport, which is maximized when the interstitial layer atomic mass approaches the average mass of the two fixed crystals. The degree of enhancement depends on the vibrational mismatch between the interstitial layer and the crystals comprising the interface, and we report an increase in thermal boundary conductance of up to 50%.
Skip Nav Destination
2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4941-5
PROCEEDINGS PAPER
The Effect of Interstitial Layers on Thermal Boundary Conductance Between Lennard-Jones Crystals Available to Purchase
Timothy S. English,
Timothy S. English
University of Virginia, Charlottesville, VA
Search for other works by this author on:
John C. Duda,
John C. Duda
University of Virginia, Charlottesville, VA
Search for other works by this author on:
Donald A. Jordan,
Donald A. Jordan
University of Virginia, Charlottesville, VA
Search for other works by this author on:
Pamela M. Norris,
Pamela M. Norris
University of Virginia, Charlottesville, VA
Search for other works by this author on:
Leonid V. Zhigilei
Leonid V. Zhigilei
University of Virginia, Charlottesville, VA
Search for other works by this author on:
Timothy S. English
University of Virginia, Charlottesville, VA
John C. Duda
University of Virginia, Charlottesville, VA
Donald A. Jordan
University of Virginia, Charlottesville, VA
Pamela M. Norris
University of Virginia, Charlottesville, VA
Leonid V. Zhigilei
University of Virginia, Charlottesville, VA
Paper No:
IHTC14-22953, pp. 443-448; 6 pages
Published Online:
March 1, 2011
Citation
English, TS, Duda, JC, Jordan, DA, Norris, PM, & Zhigilei, LV. "The Effect of Interstitial Layers on Thermal Boundary Conductance Between Lennard-Jones Crystals." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 6. Washington, DC, USA. August 8–13, 2010. pp. 443-448. ASME. https://doi.org/10.1115/IHTC14-22953
Download citation file:
8
Views
Related Proceedings Papers
Related Articles
A Steady-State Energy-Based Monte Carlo Method for Phonon Transport With Arbitrary Temperature Difference
J. Heat Transfer (August,2022)
Contribution of the Hydroxyl Group on Interfacial Heat Conduction of Monohydric Alcohols: A Molecular Dynamics Study
J. Heat Transfer (March,2020)
Thermal Transport Mechanisms in Carbon Nanotube-Nanofluids Identified From Molecular Dynamics Simulations
J. Heat Transfer (July,2015)
Related Chapters
Characterization of Ultra-High Temperature and Polymorphic Ceramics
Advanced Multifunctional Lightweight Aerostructures: Design, Development, and Implementation
Consideration of a Preliminary Data Base for MIL-HDBK-17B
Computerization and Networking of Materials Data Bases
Fabrication of Single Crystal Diamonds∕Cemented Carbide Composite Cutter for Rock Drilling
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)