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The Development of Energy-Efficient Ships Utilizing Optimization Technique

Research Project

Project/Area Number 63850097
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 船舶抵抗・運動性能・計画
Research InstitutionOsaka University

Principal Investigator

TANAKA Ichiro  Osaka University Fuculty of Engineering Professor, 工学部, 教授 (30028964)

Co-Investigator(Kenkyū-buntansha) KAWASHIMA Toshihiko  National Research Inst. Fishing Boat and Instrument Research Engineer of Fisheri, 技官
AMAGAI Kiyoshi  Hokkaido University Fuculty of Fisheries Associate Professor, 水産学部, 助教授 (50001623)
NAKATO Michio  Hirosima University Fuculty of Engineering Professor, 工学部, 教授 (20034324)
IKEHATA Mitsuhisa  Yokohama National Univ. Fuculty of Engineering Professor, 工学部, 教授 (10114969)
SUZUKI Toshio  Osaka University Fuculty of Engineering Professor, 工学部, 教授 (80029107)
Project Period (FY) 1988 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥12,800,000 (Direct Cost: ¥12,800,000)
Fiscal Year 1990: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1989: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1988: ¥6,600,000 (Direct Cost: ¥6,600,000)
KeywordsInfluence Function / Nonlinear Programming / Frameline Mapping Parameter / Bulb / Fishing Boats / Viscous Resistance / Wave Resistance / Image Processing / 粘性低抗 / 造波低抗 / 粘性圧力抵抗 / 超高速船 / 最適設計法
Research Abstract

This summary presents an overview of the research on the development of energy-efficient ships utilizing optimization technique. The main research results sre summarized as follows.
1. A new design tool for reducing the viscous resistance by changing the frameline shape is introduced. In this method, the framelines are represented by conformal mapping parameters and the influence function, which gives the variation of viscous resistance by unit changes of mapping parameters, is explicitly expressed by these parameters. In one application for a full form ship, it is shown that the large bilge radius and the small beam around the stern are required for reducing viscous pressure resistance.
2. The new technique is developed to obtain the influence function numerically for axisymmetric bodies in order to obtain optimum prismatic curve. The influence function gives the relationship between the variation of viscous resistance and small change of radius distribution. The combination of this inf … More luence function and a iterative linear programming technique gives an optimum axisymmetric body with minimum viscous resistance under various constraints. In an application under the constraints of constant volume and maximum diameter, it is shown that the low resistance body has a shape witha parallel part whether the initial one has or not.
3. A new high speed displacement ship shape is proposed. It has an airship bulb supported by strut at the bow. The optimum mainhull shape and a bulb shape are obtained by use of SUMT, a kind of nonlinear programming. The calculated wave resistance for 200m ship shows very promising result at the speed of 43 kt. The model test result support the design method.
4. The boundary element method for wave field and the small cross-flow boundary layer theory are applied to obtain the hull form of new fishing boats. The experiments are conducted to check the results of the theory. The experiment implies that the further study for three dimentional separation around buttock slope should be necessary in performing optimization.
5. The new techniques are proposed to obtain the two or three dimensional velocity vectors from the pathline image photograph of the flow field lighted by slit light sheet. The applications for the flow around a simple geometry show very promising results for practical measurements by image processing. Less

Report

(4 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • 1988 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 余 志慶、田中 一朗: "Shaping an Axisymmetric Body for Reducing Viscous Resistance with the Use of Infuruence Function" 関西造船協会誌. 215. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 川島 敏彦: "境界要素法の自由表面パネルの生成に関する研究" 水産工学研究所報告. 10. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 川島 敏彦: "数値計算による自動作画処理法の開発" 水産工学研究所報告. 10. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 鈴木 敏夫、白瀬 隆史: "トレ-サ画像による流場計測の一手法" 関西造船協会誌. 212. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 平工 良三、鈴木 敏夫: "トレ-サ画像による流場計測の一手法(第2報)" 関西造船協会誌. 213. 59-64 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 川勝 充、平工 良三、鈴木 敏夫: "トレ-サ画像による流場計測の一手法(第3報)" 関西造船協会誌. 215. 77-81 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Z. -Q. Yu and I. Tanaka: "Shaping an Axisymmetric Body for Reducing Viscous Resistance with the Use of Influence Function" Journal of Kansai Soc. Naval Arch.No. 215. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Kawashima, H. Kajitani: "Generation of the Free Surface Panels in Boundary Element Method" Bulletin of National Research lnst. of Fisheries Eng.Vol. 10. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Kawshima: "Development and Application of a Graphic Method Automatically to analyze the Numerical Comutation Process" Bulletin of National Research Inst. of Fisheries Eng.Vol. 10. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Suzuki and T. Shirase: "A Technique to Measure the Flow Velocity by an Analysis of Tracer Pathline Images" Journal of Kansai Soc. Naval Arch.No. 212. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] R. Hiraku and T. Suzuki: "A Technique to Measure the Flow Velocity by an Analysis of Tracer Pathline Images (2nd report)" Journal of Kansai Soc. Naval Arch.No. 213. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Kawakatsu, R. Hiraku and T. Suzuki: "A Technique to Measure the Flow Velocity by an Analysis of Tracer Pathline Images (3rd report" Journal of Kansai Soc. Naval Arch.No. 215. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 余 志慶、田中 一朗: "Shaping an Axisymmetric Body for Reducing Viscous Resistance with the Use of Infuruence Function" 関西造船協会誌. 215. 19-34 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 平工 良三,鈴木 敏夫: "トレ-サ画像による流場計測の一手法(第2報)" 関西造船協会誌. 213. 59-64 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 川勝 充、平工 良三,鈴木 敏夫: "トレ-サ画像による流場計測の一手法(第3報)" 関西造船協会誌. 215. 77-81 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 鈴木敏夫: "トレ-サ-画像による流場計測の一手法" 関西造船協会誌. 212. 75-79 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 鈴木敏夫: "トレ-サ-画像による流場計測の一手法(第2報)" 関西造船協会誌. 214. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 川島敏彦: "水産工学研究所の新回流水槽とその一周辺" 漁船. 284. 592-605 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 鈴木敏夫: 関西造船協会誌. 212. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 川島敏彦: 水産工学研究所報告. 10. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 川島敏彦: 水産工学研究所報告. 10. (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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