| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Thermal Transport in Methane Hydrate by Molecular Dynamics and Phonon Inelastic Scattering |
| WANG Zhao-Liang1**, YUAN Kun-Peng1, TANG Da-Wei2 |
1Energy and Power Department, China University of Petroleum, Qingdao 266580
2Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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WANG Zhao-Liang, YUAN Kun-Peng, TANG Da-Wei 2015 Chin. Phys. Lett. 32 104401 |
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Abstract The heat conduction and thermal conductivity for methane hydrate are simulated from equilibrium molecular dynamics. The thermal conductivity and temperature dependence trend agree well with the experimental results. The nonmonotonic temperature dependence is attributed to the phonon inelastic scattering at higher temperature and to the confinement of the optic phonon modes and low frequency phonons at low temperature. The thermal conductivity scales proportionally with the van der Waals interaction strength. The conversion of a crystal-like nature into an amorphous one occurs at higher strength. Both the temperature dependence and interaction strength dependence are explained by phonon inelastic scattering.
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Received: 27 June 2015
Published: 30 October 2015
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| PACS: |
44.10.+i
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(Heat conduction)
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81.90.+c
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(Other topics in materials science)
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65.90.+i
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(Other topics in thermal properties of condensed matter)
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