Thermal transport at (001) twist grain boundaries in UO2

B. Deng; A. Chernatynskiy; S. B. Sinnott; S. R. Phillpot

doi:10.1016/j.jnucmat.2016.06.054

Thermal transport at (001) twist grain boundaries in UO₂

B. Deng, A. Chernatynskiy, S. B. Sinnott, S. R. Phillpot

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We use phonon wave-packet dynamics to study the phonon transmission at UO₂ twist grain boundaries as a function of phonon frequency, mode and incident angle. We find that grain boundaries with more disordered structures show stronger phonon transmission than more ordered grain boundaries. The transmission coefficients are used to calculate the grain boundary thermal conductance at elevated temperature.

Original language	English (US)
Pages (from-to)	167-173
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	479
DOIs	https://doi.org/10.1016/j.jnucmat.2016.06.054
State	Published - Oct 1 2016

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/j.jnucmat.2016.06.054

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title = "Thermal transport at (001) twist grain boundaries in UO2",

abstract = "We use phonon wave-packet dynamics to study the phonon transmission at UO2 twist grain boundaries as a function of phonon frequency, mode and incident angle. We find that grain boundaries with more disordered structures show stronger phonon transmission than more ordered grain boundaries. The transmission coefficients are used to calculate the grain boundary thermal conductance at elevated temperature.",

author = "B. Deng and A. Chernatynskiy and Sinnott, {S. B.} and Phillpot, {S. R.}",

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AU - Deng, B.

AU - Chernatynskiy, A.

AU - Sinnott, S. B.

AU - Phillpot, S. R.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - We use phonon wave-packet dynamics to study the phonon transmission at UO2 twist grain boundaries as a function of phonon frequency, mode and incident angle. We find that grain boundaries with more disordered structures show stronger phonon transmission than more ordered grain boundaries. The transmission coefficients are used to calculate the grain boundary thermal conductance at elevated temperature.

AB - We use phonon wave-packet dynamics to study the phonon transmission at UO2 twist grain boundaries as a function of phonon frequency, mode and incident angle. We find that grain boundaries with more disordered structures show stronger phonon transmission than more ordered grain boundaries. The transmission coefficients are used to calculate the grain boundary thermal conductance at elevated temperature.

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M3 - Article

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SN - 0022-3115

VL - 479

SP - 167

EP - 173

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Thermal transport at (001) twist grain boundaries in UO₂

Abstract

All Science Journal Classification (ASJC) codes

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