Heat capacity measurement under high pressure: A finite element method assessment

Akira Yoneda, Masahiro Osako, Eiji Ito

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    Heat capacity of high pressure minerals is a major factor controlling the Earth's internal evolution. Although heat capacity has been approximately estimated using physical models (i.e., Debye or Kieffer model), there is no experimental data available under pressure conditions exceeding 2 GPa. An innovation for heat capacity measurement under high pressure was achieved by Osako in terms of simultaneous thermal conductivity/diffusivity measurements under high pressure. Although the preliminary heat capacity values are consistent with those at ambient pressure, the technique can be further developed to be the standard method to measure heat capacity under ultra high pressure. Finite element analysis conducted in this study relieved fundamental concerns regarding the new technique for heat capacity measurements.

    Original languageEnglish
    Pages (from-to)309-314
    Number of pages6
    JournalPhysics of the Earth and Planetary Interiors
    Volume174
    Issue number1-4
    DOIs
    Publication statusPublished - May 2009

    Keywords

    • Equation of state
    • Finite element method
    • Heat capacity
    • Thermal analysis
    • Thermal conductivity
    • Thermal diffusivity

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Geophysics
    • Physics and Astronomy (miscellaneous)
    • Space and Planetary Science

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