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INVESTIGATING THE MECHANISM OF GAS EXCHANGE AT WIND-WAVE SURFACE AND ITS APPLICATION TO SIMULATION OF OCEAN-SURFACE TRANSPORT PROCESS

Research Project

Project/Area Number 16K06514
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Hydraulic engineering
Research InstitutionKyushu University

Principal Investigator

SUGIHARA YUJI  九州大学, 総合理工学研究院, 教授 (70243970)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords水工水理学 / 海洋工学 / 地球環境水理学 / 界面水理学 / 地球温暖化
Outline of Final Research Achievements

Comprehensive investigations such as numerical and wind-tunnel water tank experiments and field observation have been carried out to reveal the influence of the transition, breaking and turbulence processes at the surface of wind waves on the mechanism of gas exchange across the ocean surface. We examined characteristics of the drift current and the transition of wind-wave surface, and fluid dynamical parameters to express them. Useful findings have been obtained for quantifying the ocean boundary process and modeling of the gas transfer velocity. In addition, the gas transfer velocity at the ocean surface has been estimated on the basis of numerical results using a numerical wave model and wind information, and the simulation procedure for ocean-surface transport process has been provided.

Academic Significance and Societal Importance of the Research Achievements

二酸化炭素は,最も代表的な温室効果ガスであり,その大気-海洋間における交換機構を解明し,適切にモデル化することは,地球温暖化の影響評価において重要である.海洋表面には風波が存在しており,風波界面の遷移・砕波・乱流過程は,乱れや気泡の生成,界面崩壊等を介して環境システムに大きな影響を与えている.そのため,風波界面のガス交換機構の解明とその展開研究は,環境影響評価手法の構築において重要である.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (12 results)

All 2018 2017

All Journal Article (5 results) (of which Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Laboratory Experiments on the Transition of Wind-Driven Water Surface2018

    • Author(s)
      Daisuke Miyazaki, Yuji Sugihara, Yoshihiro Nakamura, Michio Sanjou, Takaaki Okamoto
    • Journal Title

      Engineering Sciences Reports, Kyushu University

      Volume: 40(1) Pages: 1-6

    • NAID

      120006769904

    • Related Report
      2018 Annual Research Report
    • Open Access
  • [Journal Article] 水表面にせん断応力が作用する開水路乱流場の直接数値シミュレーション2018

    • Author(s)
      白川耕,金晟眞,杉原裕司,Eljamal Osama,山口創一
    • Journal Title

      日本流体力学会年会2018講演論文集

      Volume: なし Pages: 1-2

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 風波界面の遷移に関する実験的研究2018

    • Author(s)
      中村嘉宏,宮﨑大輔,杉原裕司,山上路生,岡本隆明
    • Journal Title

      日本流体力学会年会2018講演論文集

      Volume: なし Pages: 1-2

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 気液界面におけるガス交換速度の規格化について2018

    • Author(s)
      金晟眞,杉原裕司,Eljamal Osama
    • Journal Title

      日本流体力学会年会2018講演論文集

      Volume: なし Pages: 1-2

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 成層効果を伴う乱流場の界面物質移動機構の解析2017

    • Author(s)
      金 晟眞,杉原裕司,梶原鉄矢,Eljamal Osama,山口創一
    • Journal Title

      日本流体力学会 年会2017講演論文集

      Volume: なし Pages: 1-3

    • Related Report
      2017 Research-status Report
  • [Presentation] 水表面にせん断応力が作用する開水路乱流場の直接数値シミュレーション2018

    • Author(s)
      白川耕,金晟眞,杉原裕司,Eljamal Osama,山口創一
    • Organizer
      日本流体力学会年会2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 風波界面の遷移に関する実験的研究2018

    • Author(s)
      中村嘉宏,宮﨑大輔,杉原裕司,山上路生,岡本隆明
    • Organizer
      日本流体力学会年会2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 気液界面におけるガス交換速度の規格化について2018

    • Author(s)
      金晟眞,杉原裕司,Eljamal Osama
    • Organizer
      日本流体力学会年会2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Numerical Simulation of Open-Channel Turbulence including the Effects of Thermal Stratification and Wind Stress2017

    • Author(s)
      Yuji Sugihara, Tetsuya Kajiwara, Sung Jin Kim, Takuya Nakagawa, Osama Eljamal
    • Organizer
      第20回応用力学シンポジウム
    • Place of Presentation
      京都大学吉田キャンパス(京都市)
    • Year and Date
      2017-05-20
    • Related Report
      2016 Research-status Report
  • [Presentation] 成層効果を伴う乱流場の界面物質移動機構の解析2017

    • Author(s)
      金 晟眞,杉原裕司,梶原鉄矢,Eljamal Osama,山口創一
    • Organizer
      日本流体力学会年会2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Numerical Investigation on the Effects of Thermal Stratification and Surface Shear Stress on Open-Channel Flows2017

    • Author(s)
      Sung Jin Kim, Yuji Sugihara, Tetsuya Kajiwara, Osama Eljamal, Soichi Yamaguchi
    • Organizer
      The 3rd International Conference on Industrial, Mechanical, Electrical and Chemical Engineering (ICIMECE 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 大気-海洋間の運動量・ガス交換機構のモデル化2017

    • Author(s)
      杉原裕司
    • Organizer
      第1回先進的ながれ研究会
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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