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A study on local and instantaneous thermodynamic quantities at nanoscale

Research Project

Project/Area Number 17H06836
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Thermal engineering
Research InstitutionOsaka University

Principal Investigator

Fujiwara Kunio  大阪大学, 工学研究科, 助教 (60800852)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsエネルギー輸送 / 熱輸送 / 局所量 / 熱力学量 / 単原子スケール / 非平衡 / 分子動力学 / 熱工学 / 蒸発 / 熱力学・熱工学 / 局所・瞬時輸送量 / 固体-流体界面 / 微細構造物 / エネルギ―輸送
Outline of Final Research Achievements

In this study, we established a method to calculate local quantities defined at the nanoscale considering atomic or molecular behavior, with the objective of elucidating transport phenomena of matters and energies at interfaces. Based on the established method, we investigated evaporation phenomena in a slit and energy transport across a liquid-solid interface. The results showed that the local quantities defined in the interfacial region play crucial role in transport phenomena at the nanoscale.

Academic Significance and Societal Importance of the Research Achievements

一般的に界面とはマクロスケールでは厚みのない「面」で定義されるが,原子・分子スケールの界面は数nm程度の厚みを有していることがこれまでの分子動力学の研究からも理解されている.本研究では,固体と液体や固体と気体の界面領域における局所において,熱力学量・エネルギー輸送量を算出したが,従来の界面におけるエネルギー(熱)輸送は,今回のような局所量に基づいて検討されておらず,本研究の結果は従来の界面エネルギー輸送がさらに微視的な点から解釈可能であることを示唆している.本研究に基づき,界面エネルギー輸送の分子論に基づく詳細なメカニズム解明が今後期待できる.

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (10 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Detection of heat flux at single-atom scale in a liquid-solid interfacial region based on classical molecular dynamics2019

    • Author(s)
      K. Fujiwara, M. Shibahara
    • Journal Title

      Applied Physics Letters

      Volume: 114 Issue: 1 Pages: 011601-011601

    • DOI

      10.1063/1.5062589

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Local mass and energy transports in evaporation processes from a vapor-liquid interface in a slit pore based on molecular dynamics2018

    • Author(s)
      Fujiwara K.、Shibahara M.
    • Journal Title

      AIP Advances

      Volume: 8 Issue: 2 Pages: 025124-025124

    • DOI

      10.1063/1.5010890

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Interpretation of local mass transport in evaporation process in a slit-like pore based on molecular energy transport mechanism2019

    • Author(s)
      Fujiwara K.、Shibahara M.
    • Organizer
      4th Thermal and fluids engineering conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 古典分子動力学法で算出される局所熱流束に基づく固液界面の描像2018

    • Author(s)
      藤原邦夫,芝原正彦
    • Organizer
      第55回日本伝熱シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] スリット構造内液体の蒸発過程における局所エネルギー輸送に関する分子動力学解析2018

    • Author(s)
      藤原邦夫,芝原正彦
    • Organizer
      日本流体力学会年会2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 原子スケールの固液界面領域内の三次元局所空間における熱流束の算出2018

    • Author(s)
      藤原邦夫,芝原正彦
    • Organizer
      日本機械学会2018年度年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 固液界面内における局所熱流束に関する分子動力学解析2018

    • Author(s)
      藤原邦夫,芝原正彦
    • Organizer
      日本機械学会熱工学コンファレンス2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Local energy transport in evaporation processes of the liquid in a slit pore based on the molecular dynamics method2017

    • Author(s)
      Fujiwara, K., Shibahara M.
    • Organizer
      The 9th JSME-KSME Thermal and Fluids Engineering Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] スリット構造内に存在する液体の蒸発過程時の局所エネルギー輸送に関する分子動力学解析2017

    • Author(s)
      藤原邦夫,芝原正彦
    • Organizer
      第54回日本伝熱シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] スリット構造内に気液界面を有する系における局所エネルギー輸送に関する分子動力学解析2017

    • Author(s)
      藤原邦夫,芝原正彦
    • Organizer
      日本機械学会2017年度年次大会
    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2020-03-30  

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