Development of Marine Hydrobarrier System

• Project/Area Number: 15K12492
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Osaka Prefecture University
• Principal Investigator: Baba Nobuhiro 大阪府立大学, 工学(系)研究科(研究院), 教授 (10198947)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: ハイドロバリア / 重力流 / 密度成層

Outline of Final Research Achievements

To prevent a large amount of crude oil flowing out from shipwrecked tankers or oil digging rig damaged from spreading over the ocean by wind and wave, we propose a new technique and system called Marine Hydrobarrier System to produce gravity currents surrounding circumference of the spilled oil. The interactions between gravity currents in the stratified fluids in various situations are investigated in the laboratory and in the computation to find the methods to make the system most efficiently. It is found that in some cases of the currents penetrating between two layers the head of the currents is divided successively into some parts possibly by the internal waves generated by the currents and at the same time they loss their kinetic energy by generating the waves. The results validate this type of the Hydro Barrier System is effective as the first action to minimize the environmental loss in the oil leak accidents.

Research Products

• [Journal Article] 貫入重力流の先端部の分断と内部波の発生 (2017)
  • Author(s): 小北誠時，澤野陽介，馬場信弘
  • Journal Title: 日本船舶海洋工学会平成28年春季講演会論文集 Volume: -
  • NAID: 40021613515
• [Journal Article] Computation of Axisymmetric Gravity Currents (2017)
  • Author(s): Y. Sawano, N.Baba
  • Journal Title: Proc. of the 27th International Ocean and Polar Engineering Conference Volume: -
  • Peer Reviewed
• [Journal Article] 重力流の発達に及ぼす粘性散逸の影響 (2017)
  • Author(s): 澤野陽介，馬場信弘
  • Journal Title: 日本船舶海洋工学会平成28年度秋季講演会論文集 Volume: -
  • NAID: 40021622659
• [Journal Article] 壁面および密度界面における粘性摩擦が重力流の発達に及ぼす影響 (2016)
  • Author(s): 澤野陽介 宮本雅之 馬場信弘
  • Journal Title: 日本船舶海洋工学会平成２８年春季講演会論文集 Volume: 1
• [Journal Article] 層間に貫入する重力流とそれによって発生する内段段波の相互干渉に関する実験 (2016)
  • Author(s): 小北誠時 澤野陽介 馬場信弘
  • Journal Title: 日本船舶海洋工学会平成２８年春季講演会論文集 Volume: 1
• [Journal Article] Experiment and Computation on the Development of Axisymmetric Gravity Currents (2016)
  • Author(s): Yosuke Sawano, Nobuhiro Baba
  • Journal Title: Techno-Ocean 2016 Volume: 1
  • Peer Reviewed
• [Journal Article] 軸対称重力流の発達段階の遷移に関する実験 (2015)
  • Author(s): 澤野陽介，馬場信弘，森田哲，石田将之
  • Journal Title: 日本船舶海洋工学会講演会論文集 Volume: 1
  • NAID: 40020806808
• [Presentation] 貫入重力流の先端部の分断と内部波の発生 (2017)
  • Author(s): 小北誠時，澤野陽介，馬場信弘
  • Organizer: 日本船舶海洋工学会平成28年春季講演会
• [Presentation] Computation of Axisymmetric Gravity Currents (2017)
  • Author(s): Y. Sawano, N.Baba
  • Organizer: The 27th International Ocean and Polar Engineering Conference
  • Int'l Joint Research
• [Presentation] 重力流の発達に及ぼす粘性散逸の影響 (2017)
  • Author(s): 澤野陽介，馬場信弘
  • Organizer: 日本船舶海洋工学会平成28年度秋季講演会
• [Presentation] 軸対称重力流の発達段階の遷移に関する実験 (2015)
  • Author(s): 澤野陽介，馬場信弘，森田哲，石田将之
  • Organizer: 日本船舶海洋工学会秋季講演会
  • Place of Presentation: 東京大学生産技術研究所（東京）
  • Year and Date: 2015-11-15