Thermal transport at (001) twist grain boundaries in UO2

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

Research output: Contribution to journalArticlepeer-review

4 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 languageEnglish (US)
Pages (from-to)167-173
Number of pages7
JournalJournal of Nuclear Materials
Volume479
DOIs
StatePublished - Oct 1 2016

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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