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Study on the safety assessment of free-fall lifeboat system

Research Project

Project/Area Number 12650906
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 海洋工学
Research InstitutionYokohama National University

Principal Investigator

ARAI Makoto  Yokohama National Univ., Faculty of Engineering, Professor, 大学院・工学研究院, 教授 (00232025)

Co-Investigator(Kenkyū-buntansha) MURAI Motohiko  Yokohama National Univ., Faculty of Environment and Information Sciences, Associate Professor, 大学院・環境情報研究院, 助教授 (60292893)
INOUE Yoshiyuki  Yokohama National Univ., Faculty of Environment and Information Sciences, Professor, 大学院・環境情報研究院, 教授 (60126373)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2002: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
KeywordsFree-fall lifeboat / ship / Emergency evacuation / Slamming / Numerical simulation / 安全性 / 救命システム / 海難 / 水面衝撃 / 船体運動
Research Abstract

Free-fall life boat is a newly developed evacuation system suitable for use in large merchant ships and offshore structures. Detailed studies on the boat motion and acceleration on boat hull during its water entry are carried out by using a newly-developed numerical-simulation method in which impact force is evaluated by a simple theoretical formula. A new launching system is then proposed as one of the main research results by this study.
In addition to the study on the lifeboat motion, a study on the numerical simulation method of wave impact force is carried out by using a technique of computational fluid dynamics (CFD). Comparisons of the computed results of impact force with the experimental ones confirmed the effectiveness of the proposed technique. The improvements achieved over the existing approaches are also studied.
Basic studies on the bow flare slamming of container ships, which is a similar phenomenon to the water entry of free-fall lifeboats, are also conducted in this research.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] Arai, M.: "New Launching Concept for Free-Fall Lifeboats and Validation by Model Experiments and Numerical Simulations"The 7th International Marine Design Conference, IMDC 2000. 205-215 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai, M.: "A New Launching Concept for Free-Fall Lifeboats, Proceedings of Major Hazards Offshore"ERA Report 2000-0548. 6.2.1-6.2.11 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai, M.: "Studies and Improvements of Free-fall Lifeboat System"SOBENA'2000, Society of Naval Engineering, Brazil. (CD-ROM). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai, M.: "A Technique for Stable Numerical Computation of Hydrodynamic Impact Pressure in Sloshing Simulation"日本造船学会論文集. 第191号. 299-307 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Cheng, L-Y: "A Numerical Treatment of the Boundary Conditions for Stable Assessment of Hydrodynamic Impact Pressure"Proceedings of OMAE'02. (CD-ROM). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Cheng, L-Y: "A Technique for Stable Numerical Assessment of Hydrodynamic Impact Pressure due to Sloshing in Chamfered Tanks"日本造船学会講演論文集. (2003予定). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小川剛孝: "大波高中における大型コンテナ船のフレアスラミングに関する研究(第一報)フレア衝撃圧の確率密度関数に関する検討"日本造船学会論文集. 第192号. 191-200 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小川剛孝: "打ち込み荷重に対する船種の影響について"日本造船学会論文集. 第192号. 181-190 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai,M: "New Launching Concept for Free-Fall Lifeboats and Validation by Model Experiments and Numerical Simulations"The 7th International Marine Design Conference, IMDC 2000. 205-215 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai,M: "A New Launching Concept for Free-Fail Lifeboats"Proceedings of Major Hazards Offshore, ERA Report 2000, 0548. 0548. 6.2.1-6.2.11 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai,M: "Studies and Improvements of Free-fall Lifeboat System"SOBENA'2000, Society of Naval Engineering, Brazil. CD-ROM. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Arai, M.: "A Technique for Stable Numerical Computation of Hydrodynamic Impact Pressure in Sloshing Simulation"Journal of the Society of Naval Architects, Japan. 191. 299-307 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Cheng, L.Y.: "A Numerical Treatment of the Boundary Conditions for Stable Assessment of Hydrodynamic Impact Pressure"Proceedings of OMAE'02. CD-ROM. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Cheng, L.Y.: "A Technique for Stable Numerical Assessment of Hydrodynamic Impact Pressure due to Sloshing in Chamfered Tanks"Spring meeting of the Society of Naval Architects, Japan. in print. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ogawa, Y: "Flare slamming of large container carrier in rough seas (1st report) probability density function of impact pressure on bow flare"Journal of the Society of Naval Architects, Japan. 192. 191-200 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ogawa, Y.: "Effect of ship type on green water load"Journal of the Society of Naval Architects, Japan. 192. 181-190 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Aral, M.: "New Launching Concept for Free-Fall Lifeboats and Validation by Model Experiments and Numerical Simulations"The 7th International Marine Design Conference, IMDC 2000. 205-215 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Aral, M.: "A New Launching Concept for Free-Fall Lifeboats, Proceedings of Major Hazards Offshore"ERA Report 2000-0548. 6.2.1-6.2.11 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Arai, M.: "Studies and Improvements of Free-fall Lifeboat System"SOBENA' 2000, Society of Naval Engineering, Brazil. (CD-ROM). (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Arai, M.: "A Technique for Stable Numerical Computation of Hydrodynamic Impact Pressure in Sloshing Simulation"日本造船学会論文集. 第191号. 299-307 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Cheng, L-Y: "A Numerical Treatment of the Boundary Conditions for Stable Assessment of Hydrodynamic Impact Pressure"Proceedings of OMAE'02. (CD-ROM). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Cheng, L-Y: "A Technique for Stable Numerical Assessment of Hydrodynamic Impact Pressure due to Sloshing in Chamfered Tanks"日本造船学会講演論文集. (2003予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 小川剛孝: "大波高中における大型コンテナ船のフレアスラミングに関する研究(第一報)フレア衝撃圧の確率密度関数に関する検討"日本造船学会論文集. 第192号. 191-200 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 小川剛孝: "打ち込み荷重に対する船種の影響について"日本造船学会論文集. 第192号. 181-190 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Arai, M: "A Technique for Stable Numerical Computation of Hydrodynamic Impact Pressure in Sloshing Simulation"日本造船学会論文集. 第191号(発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Liang-Yee Cheng: "A Numerical Treatment of the Boundary Conditions for Stable Assessment of Hydrodynamic Impact Pressure"Proceedings of OMAE'02. CD-ROM(発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Arai, M: "New Launching Concept for Free-Fall Lifeboats and Validation by Model Experiments and Numerical Simulations"The 7th International Marine Design Conference. IMDC 2000. 205-215 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Araim, M: "A New Launching Concept for Free-Fall Lifeboats"Proceedings of Major Hazards Offshore, ERA Report 2000. 0548号. 6.2.1-6.2.11 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Arai,M.: "A New Launching Concept for Free-Fall Lifeboats"Proceedings of Major Hazards Offshore, ERA Report. 2000-0548. 6.2.1-6.2.11 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Arai,M.: "New Launching Concept for Free-Fall Lifeboats and Validation by Model Experiments and Numerical Simulations"The 7th International Marine Design Conference, IMDC 2000. 205-215 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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