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Establishing analysis methods for characterizing heat transport via numerical calculation

Research Project

Project/Area Number 20K14659
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionTohoku University

Principal Investigator

Surblys Donatas  東北大学, 流体科学研究所, 助教 (20812663)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords分子動力学 / 固液界面 / 熱流速 / Geen-Kubo / 付着仕事 / Green-Kubo / 熱輸送 / 界面熱抵抗 / 熱輸送特性 / 分子動力学法
Outline of Research at the Start

固体の熱の大部分は原子の振動によって伝わり,その振動を量子化したのはフォノン(音響量子)である.数値計算手法の一つである分子動力学法によってフォノン解析を行うことでその物質の熱輸送特性を明瞭に表すことができるが固体内に限定される.本研究では,分子動力学法に於いて主に固液界面に適用できる熱輸送特性の解析方法を確立させる.

Outline of Final Research Achievements

Numerical calculations at the molecular scale have been used for various materials in numerous previous studies. In this research, we focused on interfaces and their thermal transport properties and put effort to developing methods that allow for easier and more accurate analysis. Specifically, we developed new methods for the solid-liquid work of adhesion that is related to wetting thermal transport properties of the interface and examined their validity in complex systems. In addition we proposed and implemented correct methods for calculating the thermal flux of complex molecules, and explored methods for evaluating the thermal transport efficiency of complex interface shapes.

Academic Significance and Societal Importance of the Research Achievements

近年の計算機やソフトの発展によって,数値計算による材料の研究が盛んになってきたが,多くの研究グループが既存のツールの使用にとどまっている.今回の研究では,すでに広く使われる数値計算ツールでできる手軽な解析手法の開発やツールそのものの改善を行った.これにより,数値計算による界面や熱の研究を行っている全員に恩恵をもたらすことができ,それが業界全体の水準上げにつながると思われる.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Journal Article] Computing the Work of Solid-Liquid Adhesion in Systems with Damped Coulomb Interactions via Molecular Dynamics: Approaches and Insights2022

    • Author(s)
      Donatas Surblys, Florian Mueller-Plathe, Taku Ohara
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 126 Issue: 32 Pages: 5506-5516

    • DOI

      10.1021/acs.jpca.2c03934

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Water on hydroxylated silica surfaces: Work of adhesion, interfacial entropy, and droplet wetting2021

    • Author(s)
      Bistafa Carlos、Surblys Donatas、Kusudo Hiroki、Yamaguchi Yasutaka
    • Journal Title

      The Journal of Chemical Physics

      Volume: 155 Issue: 6 Pages: 064703-064703

    • DOI

      10.1063/5.0056718

    • NAID

      120007132227

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Methodology and meaning of computing heat flux via atomic stress in systems with constraint dynamics2021

    • Author(s)
      Surblys Donatas、Matsubara Hiroki、Kikugawa Gota、Ohara Taku
    • Journal Title

      Journal of Applied Physics

      Volume: 130 Issue: 21 Pages: 215104-215104

    • DOI

      10.1063/5.0070930

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Estimating Interface Thermal Conductance via Molecular Dynamics regardless of Surface Morphology2022

    • Author(s)
      Donatas Surblys, Tengyu Li, Haruki Oga, Yasutaka Yamaguchi, Taku Ohara
    • Organizer
      The 13th Asian Thermophysical Properties Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 分子動力学法による遮蔽クーロン相互作用を有する系での固液界面の付着仕事算出とその解釈2022

    • Author(s)
      Surblys Donatas, Mueller-Plathe Floria, 小原 拓
    • Organizer
      日本機械学会 熱工学コンファレンス2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Robustly obtaining thermal properties of complex systems via molecular dynamics2022

    • Author(s)
      Donatas Surblys
    • Organizer
      Nagoya Workshop on Molecular Simulations of Soft Matters 2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Obtaining thermal transfer properties via molecular dynamics regardless of surface topology and molecular interaction types2022

    • Author(s)
      Donatas Surblys
    • Organizer
      2nd International Workshop on Molecular-Scale Fluid Mechanics and Heat Transfer 2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Obtaining heat flux via atomic stress in systems with many-body interactions and constrained dynamics2021

    • Author(s)
      SURBLYS Donatas
    • Organizer
      Second Asian Conference on Thermal Sciences
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 多体ポテンシャルを有する系の原子応力による熱流束算出2021

    • Author(s)
      Surblys Donatas, 松原 裕樹, 菊川 豪太, 小原 拓
    • Organizer
      第58回 日本伝熱シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Dry-surface法による遮蔽クーロン相互作用を有する界面の付着仕事算出2020

    • Author(s)
      Surblys Donatas, Muller-Plathe Florian, 小原 拓
    • Organizer
      第57回 日本伝熱シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Dry-surface法による遮蔽クーロン相互作用を有する系の固液界面の付着仕事算出2020

    • Author(s)
      Surblys Donatas, Muller-Plathe Florian, 小原 拓
    • Organizer
      日本流体力学会 年会2020
    • Related Report
      2020 Research-status Report
  • [Presentation] OH終端されたシリカ表面上の濡れに関する理論解析2020

    • Author(s)
      Bistafa Carlos, Surblys Donatas, 大森 健史, 山口 康隆
    • Organizer
      日本流体力学会 年会2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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