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Investigation on the formation of ocean wave groups and the ship response

Research Project

Project/Area Number 16H02429
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Naval and maritime engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Waseda Takuji  東京大学, 大学院新領域創成科学研究科, 教授 (30376488)

Co-Investigator(Kenkyū-buntansha) 宝谷 英貴  国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (30636808)
谷澤 克治  国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (70373420)
Research Collaborator FUJIMOTO WATARU  
CHABCHOUB AMIN  
KODAIRA TSUBASA  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥44,850,000 (Direct Cost: ¥34,500,000、Indirect Cost: ¥10,350,000)
Fiscal Year 2018: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Fiscal Year 2017: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2016: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Keywords海難事故 / 非線形波動・フリーク波 / ステレオカメラ波高計測 / 船体強度 / 弾性模型船 / データ同化 / アンサンブルシミュレーション / 高次スペクトル法 / 海上安全 / 海洋科学 / 船舶工学 / 自然現象観測・予測
Outline of Final Research Achievements

Geometrical features of the wave groups including freak waves that suddenly appear in the ocean were studied based on ocean observation and numerical study. The ship response to freak wave groups was studied at a controlled towing tank. Moreover, a new data assimilation scheme merging the stereo reconstructed wave field and nonlinear numerical wave model was developed. A new ship model capable of measuring bending moment and the torsional moment was developed as well. Making use of these new tools, a database of a wave field was constructed to study the mechanism of the wave group formation, a new knowledge on the spatiotemporal evolution of wave group was gained, and the elastic response of the ship to the freak wave was revealed that depends on the encounter timing of the ship to the waves.

Academic Significance and Societal Importance of the Research Achievements

実海域におけるフリーク波発生要因はいまだ結論が出ていない。本研究により開発された波浪解析システムにより、今後は観測された波浪・波群の非線形性を考慮した発達過程の解明が可能となる。そして、船殻そのもので強度を保つ模型船の開発により、より実船に近い縦曲げとねじりが同時に起こる船体応答に資する実験が今後可能となる。このような新たな技術開発は学術的に意義が高い。
そして、本研究は最先端の流体力学的な知見と最先端の構造力学的な知見が融合されている点に意義がある。波形が時空間的に変化し、同じ波形でも船体が受ける荷重が大きく異なるという知見は、今後、船舶の設計基準策定にあたり非常に重要である。

Report

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

    (40 results)

All 2019 2018 2017 2016

All Journal Article (14 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 11 results,  Open Access: 2 results) Presentation (26 results) (of which Int'l Joint Research: 14 results,  Invited: 7 results)

  • [Journal Article] Temporal variation of modulated-wave-train geometries and their influence on vertical bending moments of a container ship2019

    • Author(s)
      Houtani Hidetaka、Waseda Takuji、Tanizawa Katsuji、Sawada Hiroshi
    • Journal Title

      Applied Ocean Research

      Volume: 86 Pages: 128-140

    • DOI

      10.1016/j.apor.2019.01.021

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of the four-wave quasi-resonance on freak wave shapes in the ocean2019

    • Author(s)
      Fujimoto W.、Waseda T.、 Webb A.
    • Journal Title

      Ocean Dynamics

      Volume: 69(1) Pages: 101-121

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Designing a hydro-structural ship model to experimentally measure its vertical bending and torsional vibrations2018

    • Author(s)
      Houtani H、Komoriyama Y、Matsui S、 Oka M、Sawada H、Tanaka Y、Tanizawa K
    • Journal Title

      Journal of Advanced Research in Ocean Engineering

      Volume: 4(4) Pages: 174-184

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of a Box-Shaped Hydro-Structural Ship Model Considering the Vertical-Bending and Torsional Mode Shapes2018

    • Author(s)
      宝谷英貴、小森山祐輔、松井貞興、岡正義、沢田博史、田中義照、谷澤克治
    • Journal Title

      Journal of the Japan Society of Naval Architects and Ocean Engineers

      Volume: 28 Issue: 0 Pages: 121-132

    • DOI

      10.2534/jjasnaoe.28.121

    • NAID

      130007609656

    • ISSN
      1880-3717, 1881-1760
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental and numerical investigations of temporally and spatially periodic modulated wave trains2018

    • Author(s)
      Houtani H.、Waseda T.、Tanizawa K.
    • Journal Title

      Physics of Fluids

      Volume: 30 Issue: 3 Pages: 034101-034101

    • DOI

      10.1063/1.5010431

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of waves under explosive cyclones in the Northwestern Pacific2018

    • Author(s)
      Kita Yuki、Waseda Takuji、Webb Adrean
    • Journal Title

      Ocean Dynamics

      Volume: 68 Issue: 10 Pages: 1403-1418

    • DOI

      10.1007/s10236-018-1195-z

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A simple spatial model for extreme tropical cyclone seas2018

    • Author(s)
      Wada R、Waseda T、Jonathan P
    • Journal Title

      Ocean Engineering

      Volume: 169 Pages: 315-325

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Wave turbulence and intermittency in directional wave fields2018

    • Author(s)
      Fadaeiazar E、Alberello A、Onorato M、Leontini J、Frascoli F、Waseda T、 Toffoli A
    • Journal Title

      Wave Motion

      Volume: 83 Pages: 94-101

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Measurement of spatial wave profiles and particle velocities on a wave surface by stereo imaging –validation with unidirectional regular waves–2017

    • Author(s)
      宝谷 英貴、早稲田 卓爾、谷澤 克治
    • Journal Title

      Journal of the Japan Society of Naval Architects and Ocean Engineers

      Volume: 25 Issue: 0 Pages: 93-102

    • DOI

      10.2534/jjasnaoe.25.93

    • NAID

      130006068565

    • ISSN
      1880-3717, 1881-1760
    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Experiments on higher-order and degenerate Akhmediev breather-type rogue water waves2017

    • Author(s)
      Chabchoub A、T. Waseda、B. Kibler、N. Akhmediev
    • Journal Title

      J. of Ocean Engineering and Marine Energy

      Volume: 3(4) Issue: 4 Pages: 385-394

    • DOI

      10.1007/s40722-017-0097-3

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experiments on Spontaneous Modulation Instability in Hydrodynamics2017

    • Author(s)
      Chabchoub, A., Genty, G., Dudley, J., Kibler, B. and Waseda, T.
    • Journal Title

      The 27th International Ocean and Polar Engineering Conference

      Volume: ISOPE-I-17-582 Pages: 5-5

    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Laboratory Experiments on the Effects of a Variable Current Field on the Spectral Geometry of Water Waves2016

    • Author(s)
      Rapizo Henrique、Waseda Takuji、Babanin Alexander V.、Toffoli Alessandro
    • Journal Title

      Journal of Physical Oceanography

      Volume: 46 Issue: 9 Pages: 2695-2717

    • DOI

      10.1175/jpo-d-16-0011.1

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Modulation Instability and Extreme Events Beyond Initial Three Wave Systems2016

    • Author(s)
      Chabchoub, A., & Waseda, T.
    • Journal Title

      In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering

      Volume: V003T02A Pages: 036-036

    • Related Report
      2016 Annual Research Report
  • [Journal Article] The Relationship Between the Shape of Freak Waves and Nonlinear Wave Interactions.2016

    • Author(s)
      Fujimoto, W., & Waseda, T.
    • Journal Title

      In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering

      Volume: V003T02A Pages: 003-003

    • Related Report
      2016 Annual Research Report
  • [Presentation] Designing a hydro-structural model ship to experimentally measure its vertical-bending and torsional vibrations2018

    • Author(s)
      Houtani H、Komoriyama Y、Matsui S、Oka M、Sawada H、Tanaka Y、Tanizawa K
    • Organizer
      The 8th International Conference on HYDROELASTICITY IN MARINE TECHNOLOGY
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 縦曲げ剛性および捩り剛性を考慮したコンテナ船一体型弾 性模型の設計 -箱型弾性模型による予備実験-,日本船舶海洋工学会平成30年春季講演会2018

    • Author(s)
      宝谷英貴、小森山祐輔、岡正義、沢田博史、田中義照、谷澤克治
    • Organizer
      2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 模型船の縦曲げと捩りの検定法について,日本船舶海洋工学会平成30年秋季講演会2018

    • Author(s)
      松井貞興、宝谷英貴、小森山祐輔、沢田博史
    • Organizer
      2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Benchmark for the Sources of Uncertainty in Extreme Wave Analysis2018

    • Author(s)
      Wada、 R and Waseda、 T
    • Organizer
      ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ADCP Observation and Numerical Model Prediction of Tidal Currents Near Kozu Island2018

    • Author(s)
      Kodaira T and Waseda T
    • Organizer
      ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reproduction of Freak Waves Using Variational Data Assimilation and Observation2018

    • Author(s)
      Fujimoto W and Waseda T
    • Organizer
      ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Drifting Rogue Packets2018

    • Author(s)
      Chabchoub A、 Hoffmann N、 Akhmediev N and Waseda T
    • Organizer
      ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modulational instability in realistic directional seas2018

    • Author(s)
      Waseda T
    • Organizer
      Workshop on Nonlinear Water Waves
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Wave groups in the ocean and its relevance to ship response2018

    • Author(s)
      Waseda T
    • Organizer
      3 rd Latin American Symposium on Water Waves
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 縦曲げ剛性および捩り剛性を考慮したコンテナ船一体型弾 性模型の設計 -箱型弾性模型による予備実験-,日本船舶海洋工学会平成30年春季講演会2018

    • Author(s)
      宝谷英貴、小森山祐輔、岡正義、沢田博史、田中義照、谷澤克治
    • Organizer
      日本船舶海洋工学会平成30年春季講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 模型船の縦曲げと捩りの検定法について,日本船舶海洋工学会平成30年秋季講演会2018

    • Author(s)
      松井貞興、宝谷英貴、小森山祐輔、沢田博史
    • Organizer
      日本船舶海洋工学会平成30年秋季講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 変調不安定波の波形について,日本船舶海洋工学会平成29年春季講演会,20172017

    • Author(s)
      宝谷英貴、早稲田卓爾、谷澤克治
    • Organizer
      日本船舶海洋工学会平成29年春季講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Vertical bending moments of a container ship in modulational wave trains2017

    • Author(s)
      Houtani H、Waseda T、Tanizawa K
    • Organizer
      The 10th International Workshop on Ship and Marine Hydrodynamics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experiments on Spontaneous Modulation Instability in Hydrodynamics2017

    • Author(s)
      Chabchoub, A., Genty, G., Dudley, J., Kibler, B. and Waseda, T.,
    • Organizer
      The 27th International Ocean and Polar Engineering Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spectral downshifting and rogue waves in directional seas - outstanding questions posed by K. Dysthe2017

    • Author(s)
      Waseda T
    • Organizer
      SURFACE WAVES IN THE OCEAN
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kinematics of freak waves in the ocean and ship response2017

    • Author(s)
      Waseda T、 H Houtani and W Fujimoto
    • Organizer
      5th Norway-Scotland Waves Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spectral downshifting and rogue waves in directional seas - outstanding questions posed by K. Dysthe2017

    • Author(s)
      Waseda, T.
    • Organizer
      SURFACE WAVES IN THE OCEAN, A conference in honor of Kristian Dysthe's 80th birthday
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kinematics of freak waves in the ocean and ship response2017

    • Author(s)
      Waseda, T., H. Houtani and W. Fujimoto
    • Organizer
      5th Norway-Scotland Waves Symposium
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 水位時系列データからの波形再構成に向けたアンサンブル 4 次元変分法の応用2017

    • Author(s)
      藤本航、早稲田卓爾
    • Organizer
      平成29年日本船舶海洋工学会春季講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Utilization of buoy record for estimation of observed freak waves2017

    • Author(s)
      Wataru Fujimoto, Takuji Waseda
    • Organizer
      WISE meeting 2017
    • Related Report
      2016 Annual Research Report
  • [Presentation] 変調不安定波の波形について2017

    • Author(s)
      宝谷英貴、谷澤克治、早稲田卓爾
    • Organizer
      平成29年日本船舶海洋工学会春季講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Resonant interaction of surface gravity waves under influence of external forcing2016

    • Author(s)
      Waseda, T.
    • Organizer
      Brazilian Symposium on Ocean Waves
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 実海域で発生したフリーク波に対する4 波相互作用の効果の数値的検証2016

    • Author(s)
      藤本航、早稲田卓爾、Adrean Webb
    • Organizer
      平成28年日本船舶海洋工学会秋季講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] The relationship between the shape of freak wave and nonlinear wave interactions2016

    • Author(s)
      Fujimoto, W., T. Waseda
    • Organizer
      Proceedings of the ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering OMAE2016
    • Related Report
      2016 Annual Research Report
  • [Presentation] Simulating Observed Freak Waves in Deep Water near Japan using WAVEWATCH III and the Higher Order Spectral Method2016

    • Author(s)
      Wataru Fujimoto, Takuji Waseda, Keiji Kiyomatsu
    • Organizer
      WISE meeting 2016
    • Related Report
      2016 Annual Research Report
  • [Presentation] 波群中のフリーク波とコンテナ船の縦曲げ荷重(第2報)2016

    • Author(s)
      宝谷英貴、谷澤克治、早稲田卓爾、沢田博史
    • Organizer
      平成28年日本船舶海洋工学会秋季講演会
    • Related Report
      2016 Annual Research Report

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

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