• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Kinetic-theory study on gas flows in a circular pipe

Research Project

Project/Area Number 21K14076
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionKyoto University

Principal Investigator

Masanari Hattori  京都大学, 工学研究科, 助教 (50812765)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords分子気体力学 / ボルツマン方程式 / エンスコグ方程式 / 円管流 / 高密度気体
Outline of Research at the Start

マイクロ・ナノデバイスや微細構造をもつ多孔質体などの微小系内の気体では,巨視的連続体仮説に立つ通常の流体力学では気体の振舞いを正確に把握できない.この場合,分子気体力学による解析が必要になる.本研究では,単成分および2成分の理想気体を対象として,主に円管内の流れを考える.ボルツマン方程式の精密な数値解析により,流れの詳しい性質を明らかにすることを目指す.

Outline of Final Research Achievements

In the present study, the Poiseuille and the thermal transpiration flows in a gas in small systems have been investigated by means of the numerical analysis of the Boltzmann and the Enskog equations. Accurate numerical results of mass flow and macroscopic fields have been obtained by the analysis of a gas flow in a circular pipe based on the Boltzmann equation. The behavior of the Poiseuille and the thermal transpiration flows of a dense gas have been clarified in detail based on the Enskog equation for a wide range of the gas denseness and the smallness of the system.

Academic Significance and Societal Importance of the Research Achievements

マイクロ・ナノデバイスや微細構造をもつ多孔質体などの微小な系内の気体の振舞いは,通常の巨視的流体力学では正確に記述できない.そのような微小系内の気体流を調べるには,微視的立場に立った分子気体力学による解析が必要である.本研究では,数値計算のアプローチにより,微細な円管内あるいは平行流路内の圧力駆動流・熱的駆動流の特性を明らかにし,その知見を蓄積することができた.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (6 results)

All 2024 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Thermally driven flow of a dense gas in a nanochannel2024

    • Author(s)
      Hattori Masanari
    • Journal Title

      31st International Symposium on Rarefied Gas Dynamics, AIP Conf. Proc.

      Volume: 2996 Pages: 040003-040003

    • DOI

      10.1063/5.0187368

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Poiseuille and thermal transpiration flows of a dense gas between two parallel plates2023

    • Author(s)
      Masanari Hattori
    • Journal Title

      Journal of Fluid Mechanics

      Volume: -

    • DOI

      10.1017/jfm.2023.270

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Heat transfer in a dense gas between two parallel plates2022

    • Author(s)
      Masanari Hattori, Soichi Tanaka, and Shigeru Takata
    • Journal Title

      AIP Advances

      Volume: 12 Issue: 5 Pages: 055220-055220

    • DOI

      10.1063/5.0091390

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 平行二平板間を占める高密度気体のポアズイユ流と熱遷移流2022

    • Author(s)
      初鳥匡成
    • Organizer
      日本流体力学会年会2022
    • Related Report
      2022 Research-status Report
  • [Presentation] Thermally Driven Flow of a Dense Gas in a Nanochannel2022

    • Author(s)
      Masanari Hattori
    • Organizer
      32nd International Symposium on Rarefied Gas Dynamics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Poiseuille and thermal transpiration flows in a dense gas between two parallel plates2021

    • Author(s)
      M. Hattori
    • Organizer
      International Workshop: Recent Advances in Kinetic Theory and Non-Equilibrium Fluid Dynamics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi