Estimation of thermal conductivity of silicate melts using three-dimensional thermal resistor network model

Tsuyoshi Nishi; Hiromichi Ohta; Sohei Sukenaga; Hiroyuki Shibata

doi:10.1016/j.jnoncrysol.2017.11.014

Estimation of thermal conductivity of silicate melts using three-dimensional thermal resistor network model

Tsuyoshi Nishi, Hiromichi Ohta, Sohei Sukenaga, Hiroyuki Shibata

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

2 Citations (Scopus)

Abstract

The thermal conductivity of silicate melts was evaluated using a thermal resistor network model, which consisted of a diamond lattice. Based on the assumption that the mean free path of phonons is shorter than the interatomic distance, the thermal conductivity of the silicate melts was calculated through a Monte-Carlo simulation based on the non-bridging oxygens to tetrahedral cations (NBO/T) ratio and the ratio of the conductance of silicon with NBOs (C_Si-NBO) to that of silicon with bonding oxygens (C_Si-BO). For NBO/T < 1, the simulated thermal conductivity of the silicate melts was in good agreement with that reported in the literature. Thus, the proposed method and the three-dimensional thermal resistor network model used are suitable for estimating the thermal conductivity of silicate melts.

Original language	English
Pages (from-to)	9-13
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	482
DOIs	https://doi.org/10.1016/j.jnoncrysol.2017.11.014
Publication status	Published - 2018 Feb 15

Keywords

Conductance ratio
Diamond lattice
NBO/T ratio
Silicate melt
Thermal conductivity
Thermal resistor network model

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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title = "Estimation of thermal conductivity of silicate melts using three-dimensional thermal resistor network model",

abstract = "The thermal conductivity of silicate melts was evaluated using a thermal resistor network model, which consisted of a diamond lattice. Based on the assumption that the mean free path of phonons is shorter than the interatomic distance, the thermal conductivity of the silicate melts was calculated through a Monte-Carlo simulation based on the non-bridging oxygens to tetrahedral cations (NBO/T) ratio and the ratio of the conductance of silicon with NBOs (CSi-NBO) to that of silicon with bonding oxygens (CSi-BO). For NBO/T < 1, the simulated thermal conductivity of the silicate melts was in good agreement with that reported in the literature. Thus, the proposed method and the three-dimensional thermal resistor network model used are suitable for estimating the thermal conductivity of silicate melts.",

keywords = "Conductance ratio, Diamond lattice, NBO/T ratio, Silicate melt, Thermal conductivity, Thermal resistor network model",

author = "Tsuyoshi Nishi and Hiromichi Ohta and Sohei Sukenaga and Hiroyuki Shibata",

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AU - Nishi, Tsuyoshi

AU - Ohta, Hiromichi

AU - Sukenaga, Sohei

AU - Shibata, Hiroyuki

PY - 2018/2/15

Y1 - 2018/2/15

N2 - The thermal conductivity of silicate melts was evaluated using a thermal resistor network model, which consisted of a diamond lattice. Based on the assumption that the mean free path of phonons is shorter than the interatomic distance, the thermal conductivity of the silicate melts was calculated through a Monte-Carlo simulation based on the non-bridging oxygens to tetrahedral cations (NBO/T) ratio and the ratio of the conductance of silicon with NBOs (CSi-NBO) to that of silicon with bonding oxygens (CSi-BO). For NBO/T < 1, the simulated thermal conductivity of the silicate melts was in good agreement with that reported in the literature. Thus, the proposed method and the three-dimensional thermal resistor network model used are suitable for estimating the thermal conductivity of silicate melts.

AB - The thermal conductivity of silicate melts was evaluated using a thermal resistor network model, which consisted of a diamond lattice. Based on the assumption that the mean free path of phonons is shorter than the interatomic distance, the thermal conductivity of the silicate melts was calculated through a Monte-Carlo simulation based on the non-bridging oxygens to tetrahedral cations (NBO/T) ratio and the ratio of the conductance of silicon with NBOs (CSi-NBO) to that of silicon with bonding oxygens (CSi-BO). For NBO/T < 1, the simulated thermal conductivity of the silicate melts was in good agreement with that reported in the literature. Thus, the proposed method and the three-dimensional thermal resistor network model used are suitable for estimating the thermal conductivity of silicate melts.

KW - Conductance ratio

KW - Diamond lattice

KW - NBO/T ratio

KW - Silicate melt

KW - Thermal conductivity

KW - Thermal resistor network model

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