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Construction of multi-view cavity shape measurement and improvement of theoretical calculation of propeller cavitation

Research Project

Project/Area Number 19K04871
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionNational Institute of Maritime, Port and Aviation Technology

Principal Investigator

Shiraishi Koichiro  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 (40586591)

Co-Investigator(Kenkyū-buntansha) 金丸 崇  九州大学, 工学研究院, 准教授 (90612127)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords多視点型ラインセンシング法 / キャビテーション形状計測 / 翼端渦キャビテーション / キャビテーションに起因する変動圧力 / 理論計算法 / 簡便なパネル法(SQCM) / キャビテーション / 三次元形状計測 / キャビティ形状計測 / SQCM(パネル法) / 理論計算 / 攪乱速度ポテンシャル
Outline of Research at the Start

舶用プロペラに生じるキャビテーションの理論計算の推定精度向上のためには,水槽試験におけるキャビティ形状計測結果を用いた計算モデルの検証が不可欠である.本研究では,界面が不安定な三次元形状を計測可能な多視点型ラインセンシング法を開発し,本計測法を用いてシートキャビテーション,翼端渦キャビテーション,翼端部クラウドキャビテーションの形状計測が可能なキャビティ形状計測法を構築する.そして,翼形状の異なる複数の模型プロペラについてキャビティ形状計測を実施し,開発手法の有効性を確認する.最終的に本計測結果を用いて理論計算法の高精度化を図る.

Outline of Final Research Achievements

To improve the accuracy of theoretical calculations of cavitation in marine propellers, it is essential to verify the theoretical model using cavity shape measurement results of cavitation experiment at cavitation tunnels. In this study, we have developed a multi-view line sensing method that can measure three-dimensional shapes with unstable interfaces by arranging multiple line sensors from multiple angles, enabling the shape measurement of tip vortex cavitation, which has been difficult to measure in the past. In the improvement of theoretical calculation, we have developed a calculation method that calculates the fluctuating pressure for each cavity volume element composed of cavity surface panels and calculates the total fluctuating pressure from the sum of these elements. We have shown that the developed calculation method can estimate the pressure fluctuation more accurately than the previous method.

Academic Significance and Societal Importance of the Research Achievements

本研究では,多角的に高精度な三次元形状計測が可能な多視点型ラインセンシング法を新たに開発した。本計測法は複数台のラインセンサーを様々なアングルで設置することで,多角的に三次元形状を計測でき,ロバスト性が非常に高い特徴がある.なお,本計測法は非接触の多角的三次元形状計測法として様々な形状計測に応用することが可能である.
多視点型ラインセンシング法を用いることで,界面の変動の激しい翼端部クラウドキャビテーションの形状も捉えることが可能である.これによって形状の変化率等を用いて,翼端部クラウドキャビテーションを定量的に評価でき,新たな理論モデルの開発が可能となり,理論計算法の高精度化にもつながる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Development of Cavitation Shape Measurement Method Using Muti-View Line Sensing Method2022

    • Author(s)
      Koichiro Shiraishi, Yuki Sawada, Azumi Kaneko and Daijiro Arakawa
    • Journal Title

      Proceedings of 7th International Symposium on Marine Propulsors

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 3D Shape Measurement Method for Cavitation on Marine Propellers Using Combination Line CCD Camera Method2021

    • Author(s)
      Shiraishi Koichiro、Sawada Yuki、Arakawa Daijiro
    • Journal Title

      Journal of the Japan Society of Naval Architects and Ocean Engineers

      Volume: 33 Issue: 0 Pages: 219-230

    • DOI

      10.2534/jjasnaoe.33.219

    • NAID

      130008080993

    • ISSN
      1880-3717, 1881-1760
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Accuracy Verification of Cavity Shape Measurement Using Combination Line CCD Camera Measurement Method2021

    • Author(s)
      Koichiro Shiraishi, Yuki Sawada, Junichi Fujisawa
    • Journal Title

      Proceedings of 11th International Symposium on Cavitation

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Development of Cavitation Shape Measurement Method Using Muti-View Line Sensing Method2022

    • Author(s)
      Koichiro Shiraishi, Yuki Sawada, Azumi Kaneko and Daijiro Arakawa
    • Organizer
      7th International Symposium on Marine Propulsors (SMP21)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 差分進化法を用いた舶用プロペラ翼形状の多目的最適化法の開発2022

    • Author(s)
      白石耕一郎、新川大治朗、澤田祐希、金子杏実、金丸崇、安東潤
    • Organizer
      第86回ターボ機械協会 総会・講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 大型キャビテーション水槽における計測技術の高度化2022

    • Author(s)
      白石耕一郎、澤田祐希
    • Organizer
      海上技術安全研究所第22回研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] プロペラキャビテーションによって誘起される船尾変動圧力の実用的計算法 -続報:翼面上のキャビティ分布を考慮した変動圧力の計算-2021

    • Author(s)
      金丸崇、新川大治朗、白石 耕一郎、安東潤
    • Organizer
      キャビテーションに関するシンポジウム(第20回)
    • Related Report
      2021 Annual Research Report
  • [Presentation] Accuracy Verification of Cavity Shape Measurement Using Combination Line CCD Camera Measurement Method2021

    • Author(s)
      Koichiro Shiraishi
    • Organizer
      11th International Symposium on Cavitation
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 組合せラインCCD法を用いた水中三次元形状計測法の舶用プロペラ水槽試験への応用2019

    • Author(s)
      白石耕一郎、澤田祐希
    • Organizer
      第82回ターボ機械協会講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-12-25  

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