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Development of an Innovative Measurement Technology and a High-Accuracy Theoretical Estimation Method for Ship Advancing in Waves

Research Project

Project/Area Number 21H01547
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionHiroshima University

Principal Investigator

Iwashita Hidetsugu  広島大学, 先進理工系科学研究科(工), 教授 (60223393)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
KeywordsFBG圧力センサー / 非定常圧力 / Added pressure / 抵抗増加 / ランキンパネル法
Outline of Research at the Start

波浪中を航走する船舶の耐航性能に関わる研究において、昨今光センシング技術を用いた新しい圧力場の計測法が着目されて来ている。これは、FBG (Fiber Bragg Gratings)を用いて新規に開発された貼付型圧力センサーを用いて、模型に加工を施すことなく数百点規模の圧力を一挙に計測する方法である。本研究ではこの圧力センサーの更なる計測精度の高度化と計測システム全体の構築を図ると共に、面的に計測された圧力場を用いて、既存の各種理論計算法の推定精度の検証を行うことにより波浪中の船舶の推進性能向上に寄与しようとするものである。

Outline of Final Research Achievements

In order to measure the pressure acting on the hull surface of a ship navigating in waves as a surface distribution, we have developed an FBG pressure sensor (ver. 7) that is less affected by temperature interference, and established a measurement method and data analysis technology using it. By attaching 379 pressure sensors we developed to one side of the ship model and measuring the pressure distribution at various wavelengths in regular head-waves, the accuracy of the pressure sensors and/or measurement/analysis method was confirmed. On the other hand, we have developed a method to accurately calculate steady disturbance effects in theoretical calculations using the Rankin panel method based on the simple combined method, and confirmed its effectiveness by comparing the pressure distribution measured by the FBG pressure sensors.

Academic Significance and Societal Importance of the Research Achievements

船舶を含めた輸送機器の開発や設計において、その表面の圧力分布を知ることは、流体解析を受けて行われる構造解析にも関連して究極的に重要である。これまで波浪中を航走する船舶の圧力の面分布計測は困難であったが、本研究で開発した温度干渉影響の少ないFBG圧力センサーを用いることによりそれが可能となった。これにより、計測された圧力面分布データが実用上の波浪荷重等構造設計に直接的に利用できるようになっただけでなく、学術的には数値シミュレーション等の詳細な検証用データとして活用することができるようになった。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (11 results)

All 2024 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] An innovative EFD using FBG pressure sensors for ship seakeeping2024

    • Author(s)
      Suzuki Kantaro、Iwashita Hidetsugu、Kashiwagi Masashi、Wakahara Masahito、Iida Takahito、Minoura Munehiko
    • Journal Title

      Journal of Marine Science and Technology

      Volume: - Issue: 2 Pages: 289-314

    • DOI

      10.1007/s00773-024-00986-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature Interference in Improved FBG Pressure Sensor for Towing Tank Test2023

    • Author(s)
      Suzuki, K., Iwashita, H., Kashiwagi, M., Wakahara, M., Iida, T., Minoura M.
    • Journal Title

      Journal of Marine Science and Technology

      Volume: 28 Issue: 2 Pages: 351-369

    • DOI

      10.1007/s00773-023-00925-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 不規則波中ディフラクション問題における船体表面非定常圧力分布の再現2023

    • Author(s)
      鈴木寛太郎, 箕浦宗彦, 飯田隆人,岩下英嗣, 花木孝明
    • Organizer
      日本船舶海洋工学会講演会論文集
    • Related Report
      2023 Annual Research Report
  • [Presentation] Unsteady Ship-Side Wave Measurement of a Ship Advancing in Waves by Image Analysis,2023

    • Author(s)
      Hiroki Yamazaki, Hidetsugu Iwashita, Keigo Okazaki, Takahiro Tsuchimoto
    • Organizer
      Proc. of Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Prediction of Unsteady Pressure Distribution in IrregularWaves Using Locally Measured Pressure Data and Convolution Integral2023

    • Author(s)
      Kantaro Suzuki, Takahito Iida, Hidetsugu Iwashita, Munehiko Minoura
    • Organizer
      ISOPE 2023 Ottawa Conference
    • Related Report
      2022 Annual Research Report
  • [Presentation] 不規則波中ディフラクション問題における船体表面非定常圧力分布の再現2023

    • Author(s)
      鈴木寛太郎, 箕浦宗彦, 飯田隆人, 岩下英嗣, 花木孝明
    • Organizer
      日本船舶海洋工学会講演会論文集
    • Related Report
      2022 Annual Research Report
  • [Presentation] 多点計測による船体表面圧力分布を用いた流体力の算出 - 第1 報:線形流体力 -2022

    • Author(s)
      鈴木寛太郎, 岩下 英嗣, 飯田 隆人, 柏木 正, 若原 正人, 箕浦 宗彦
    • Organizer
      日本船舶海洋工学会講演会論文集 第35 号
    • Related Report
      2022 Annual Research Report
  • [Presentation] 多点計測による船体表面圧力分布を用いた流体力の算出 - 第2 報:波浪中抵抗増加 -2022

    • Author(s)
      鈴木寛太郎, 岩下 英嗣, 飯田 隆人, 柏木 正, 若原 正人, 箕浦 宗彦
    • Organizer
      日本船舶海洋工学会講演会論文集 第35 号
    • Related Report
      2022 Annual Research Report
  • [Presentation] Ship-Side Wave Measurement of a Ship Advancing in Waves by High-Speed Cameras2022

    • Author(s)
      Yamazaki, H., Iwashita, H., Aoki, K., Konom Y. Nakatani, S.
    • Organizer
      Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimation of Unsteady Pressure Distribution on Ship Hull Surface in Diffraction Problem by Using Pressure Data Measured at One Position2022

    • Author(s)
      Suzuki, K., Iida, T., Iwashita, H., Minoura, M.
    • Organizer
      The 32nd International Ocean and Polar Engineering Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FBG圧力センサの温度干渉影響について2021

    • Author(s)
      鈴木寛太郎, 岩下英嗣, 柏木正, 若原正人, 飯田隆人, 箕浦宗彦
    • Organizer
      日本船舶海洋工学会令和3年秋季講演
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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