2023 Fiscal Year Final Research Report

Investigation and modelling of air-sea heat and momentum transfer under strong hurricane

Research Project

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Project/Area Number	19KK0087
Research Category	Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
Allocation Type	Multi-year Fund
Review Section	Medium-sized Section 17:Earth and planetary science and related fields
Research Institution	University of Hyogo
Principal Investigator	Takagaki Naohisa 兵庫県立大学, 工学研究科, 准教授 (00554221)
Co-Investigator(Kenkyū-buntansha)	鈴木直弥近畿大学, 理工学部, 教授 (40422985) 松田景吾国立研究開発法人海洋研究開発機構, 付加価値情報創生部門(地球情報科学技術センター), 副主任研究員 (50633880) 大西領東京工業大学, 学術国際情報センター, 教授 (30414361) 小森悟同志社大学, 研究開発推進機構, 嘱託研究員 (60127082)
Project Period (FY)	2019-10-07 – 2024-03-31
Keywords	台風 / 風波 / 運動量輸送 / 熱輸送 / 乱流輸送
Outline of Final Research Achievements	It is extremely important to clarify the heat and momentum transport mechanism through the sea surface during stormy winds such as typhoons, and to construct a reliable transport model in order to accurately estimate the intensity of typhoons. Therefore, in this study, we collaborate with overseas collaborators in Russia, to construct a new model for heat and momentum transport through the sea surface. As a result of multiple laboratory experiments, we clarified the momentum transport mechanism through the gas-liquid interface due to air-side bulk turbulence, liquid-side flow, and blowing distance (fetch), and established a transport model that takes these effects into account. Furthermore, we verified the effect of changes in water surface shape on heat transport through the gas-liquid interface.
Free Research Field	流体工学
Academic Significance and Societal Importance of the Research Achievements	今回の国際共同研究プロジェクトを通じて，台風強度の推定精度を向上させるために必要な気液間運動量・熱輸送モデルを開発し，複数の査読付き英語論文で発表を行うに至ったことから，その社会的意義は大きい．さらに，本科研費プロジェクトは，国際共同研究グループばかりでなく国内の共同研究グループの関係性を強化し，新しい複数の科学研究プロジェクトへとつながりを発生させた．以上より，本国際共同研究プロジェクトは，学術論文および無形の形で大きな成果を出しており，学術的・社会的に大きな意義を持つといえる．