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Development of an underwater shock wave generation method as maritime technology

Research Project

Project/Area Number 16K14512
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Naval and maritime engineering
Research InstitutionKobe University

Principal Investigator

Abe Akihisa  神戸大学, 海事科学研究科, 教授 (50221726)

Co-Investigator(Kenkyū-buntansha) 西尾 茂  神戸大学, 海事科学研究科, 教授 (30208136)
藤本 岳洋  神戸大学, 海事科学研究科, 教授 (60314514)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords衝撃波管 / 磁力支援方式 / 高圧ガス駆動 / 水中衝撃波 / 気泡運動 / 流体工学 / 衝撃波 / コンバーター
Outline of Final Research Achievements

In order to apply the shock wave phenomena to the maritime field, the research aimed at establishing energy saving and simple underwater shock wave generation technology using exhaust of ship engine was conducted. From the viewpoint of utilizing the exhaust, we designed a compact diaphragm-less shock wave generator driven by high-pressure gas. We have manufactured a unique shockwave generator with the magnetic force support mechanism and double piston system, and succeeded in generating strong shock waves about Mach 1.5 in air. In addition, we tried to generate underwater shock waves using our device, and succeeded in generating underwater shock waves by water penetration of a projectile, and obtained shock pressure fluctuations exceeding 7 MPa. From the above results, it has been shown that a strong underwater shock wave driven by high-pressure gas can be safely and easily reproduced with energy saving, instead of the conventional explosive and electric discharge methods.

Academic Significance and Societal Importance of the Research Achievements

衝撃波現象の研究は、多くの分野に関連し、様々な応用活用技術が確立され、先端研究が活発に推進されている。一方、我国の経済や産業の基盤を支える海事分野では、これまで衝撃波現象を活用した技術開発事例は見られない。本研究では、衝撃波現象を活用する新たな舶用技術の創出を目的として、船舶上で実現するために機関の排気利用を前提とした省エネルギーかつ簡易な水中衝撃波生成と制御技術開発に取り組み、従来の爆薬や放電方法に代わり、高圧ガス駆動の装置によって、強い水中衝撃波を安全かつ省エネルギーで容易に再現可能であることを示した。これは、海事産業における水中衝撃波を活用する新技術の創出に繋げられる成果である。

Report

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

    (22 results)

All 2019 2018 2017 2016

All Journal Article (11 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 7 results,  Acknowledgement Compliant: 2 results) Presentation (11 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Study of sterilization effects on marine Vibrio sp. using interaction of cavitation with shock wave in a narrow water chamber2018

    • Author(s)
      Wang Jingzhu、Abe Akihisa、Koita Taketoshi、Sun Mingyu、Wang Yiwei、Huang Chenguang
    • Journal Title

      Journal of Applied Physics

      Volume: 124 Issue: 21 Pages: 213301-213301

    • DOI

      10.1063/1.5052521

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A theoretical model to estimate inactivation effects of OH radicals on marine Vibrio sp. in bubble-shock interaction2018

    • Author(s)
      Huang Y.、Wang J.、Abe A.、Wang Y.、Du T.、Huang C.
    • Journal Title

      Ultrasonics Sonochemistry

      Volume: - Pages: 359-368

    • DOI

      10.1016/j.ultsonch.2018.10.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental Study on Interaction of Multiple Cylindrical Bubbles with Underwater shock wave2018

    • Author(s)
      Jingzhu Wang, Akihisa Abe, Yiwei Wang
    • Journal Title

      Proceedings of the 10th International Symposium on Cavitation (CAV2018)

      Volume: - Pages: 1-4

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 燃料インジェクター内におけるストリングキャビテーションの発生と3次元流場構造の分析2018

    • Author(s)
      中村崚登,西尾 茂,宋 明良
    • Journal Title

      可視化情報学会誌

      Volume: Vol.38, Suppl. No.1

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 側方気流を受ける液体噴流の流場構造変化2018

    • Author(s)
      宗村宏晃,西尾 茂,宋 明良
    • Journal Title

      可視化情報学会誌

      Volume: Vol.38,Suppl. No.1

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Fundamental study of sterilization effects on marine Vibrio sp. in a cylindrical water chamber with supply of only underwater shock waves2018

    • Author(s)
      Wang Jingzhu、Abe Akihisa、Wang Yiwei、Huang Chenguang
    • Journal Title

      Ultrasonics-Sonochemistry

      Volume: 42 Pages: 541-550

    • DOI

      10.1016/j.ultsonch.2017.11.047

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Sterilization Effects on a Marine Bacterium using Underwater Shock Waves with Induced Bubbles in a Cylindrical Water Chamber2017

    • Author(s)
      Jingzhu Wang, Akihisa Abe
    • Journal Title

      Proceedings of the International Symposium on Marine Engineering (ISME)

      Volume: B09-216 Pages: 341-346

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Strength and Frequency of Underwater Shock Waves Related to Sterilization Effects on a Marine Bacterium2017

    • Author(s)
      Jingzhu Wang, Akihisa Abe, Nobuyuki Ito, Kota Nishibayashi
    • Journal Title

      Proceedings of 31th International Symposium on Shock Waves, Nagoya, Japan

      Volume: SBM000302 Pages: 1-6

    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Journal Article] Contribution of Cavitation Generation to Shock Wave Sterilization Effects in a Narrow Water Chamber2017

    • Author(s)
      Jingzhu Wang, Akihisa Abe, Taketoshi Koita, Mingyu Sun
    • Journal Title

      Proceedings of 31th International Symposium on Shock Waves, Nagoya, Japan

      Volume: SBM000165 Pages: 1-6

    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Journal Article] Fundamental Study on Sterilization Effect of Underwater Shock Waves with Cavitation Bubbles on Marine Bacteria2016

    • Author(s)
      Jingzhu Wang, Akihisa Abe
    • Journal Title

      Proceedings of 7th PAAMES and AMEC2016

      Volume: ー Pages: 1-6

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Experimental Observation on Generation Frequency of Shock Waves in Cavitation Flow2016

    • Author(s)
      Kota Nishibayashi, Jingzhu Wang and Akihisa Abe
    • Journal Title

      Proceedings of 7th PAAMES and AMEC2016

      Volume: ー Pages: 1-4

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] キャビテーション噴流中のリバウンド衝撃波の船底付着物除去効果に関する研究2019

    • Author(s)
      玉木雄祐,阿部晃久,下川朋之
    • Organizer
      平成30年度衝撃波シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] キャビテーション噴流の壊食に及ぼす水中衝撃波の効果に関する研究2018

    • Author(s)
      玉木雄祐,阿部晃久,下川朋之
    • Organizer
      第88回マリンエンジニアリング学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 複雑な混合モード下の破壊力学パラメータ評価に関する研究2018

    • Author(s)
      岸田強志、藤本岳洋
    • Organizer
      日本機械学会第31回計算力学講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Sterilization Effects on Marine Vibrio sp. under Different Conditions of Underwater Electric Discharges in a Cylindrical Water Chamber2017

    • Author(s)
      Jingzhu Wang, Yuka Nakatani, Akihisa Abe
    • Organizer
      平成28年度衝撃波シンポジウム
    • Place of Presentation
      ヴェルクよこすか(横須賀市)
    • Year and Date
      2017-03-08
    • Related Report
      2016 Research-status Report
  • [Presentation] Sterilization Effects on a Marine Bacterium using Underwater Shock Waves with Induced Bubbles in a Cylindrical Water Chamber2017

    • Author(s)
      Jingzhu Wang, Akihisa Abe
    • Organizer
      11th the International Symposium on Marine Engineering (ISME)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Strength and Frequency of Underwater Shock Waves Related to Sterilization Effects on a Marine Bacterium2017

    • Author(s)
      Jingzhu Wang, Akihisa Abe, Nobuyuki Ito, Kota Nishibayashi
    • Organizer
      31th International Symposium on Shock Waves, Nagoya, Japan
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Contribution of Cavitation Generation to Shock Wave Sterilization Effects in a Narrow Water Chamber2017

    • Author(s)
      Jingzhu Wang, Akihisa Abe, Taketoshi Koita, Mingyu Sun
    • Organizer
      31th International Symposium on Shock Waves, Nagoya, Japan
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 傾斜衝突下の予き裂三点曲げ破壊試験片のき裂進展挙動解析2016

    • Author(s)
      石川貴大、藤本岳洋
    • Organizer
      M&M2016材料力学カンファレンス
    • Place of Presentation
      神戸大学(神戸市)
    • Year and Date
      2016-10-08
    • Related Report
      2016 Research-status Report
  • [Presentation] 衝撃試験と数値解析を用いた破壊じん性評価法に関する研究2016

    • Author(s)
      石橋正晃、松山靖典、藤本岳洋
    • Organizer
      M&M2016材料力学カンファレンス
    • Place of Presentation
      神戸大学(神戸市)
    • Year and Date
      2016-10-08
    • Related Report
      2016 Research-status Report
  • [Presentation] 衝突体中の動的破壊における打撃端形状依存性に関する研究2016

    • Author(s)
      石川貴大、小椋隆寛、藤本岳洋
    • Organizer
      第29回計算力学講演会(CMD2016)
    • Place of Presentation
      名古屋大学(名古屋市)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Research-status Report
  • [Presentation] き裂進展経路予測理論によるぜい性材破壊挙動の評価2016

    • Author(s)
      三石 学、藤本岳洋
    • Organizer
      第21回計算工学講演会、
    • Place of Presentation
      朱鷺メッセ新潟コンベンションセンター(新潟市)
    • Year and Date
      2016-05-31
    • Related Report
      2016 Research-status Report

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

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