斜航する船の波に対する縦切断波形解析法について : Newman-Sharma法の非対称流場への拡張

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  • 堀 勉
    九州大学応用力学研究所津屋崎海洋災害実験所
  • 田中 一朗
    大阪大学工学部造船学教室
  • 吉澤 正純
    (現)石川島播磨重工業(株)東京第一工場:大阪大学大学院工学研究科修士課程

書誌事項

タイトル別名
  • On the Wave Pattern Analysis by means of Longitudinal Cut Method for Asymmetrical Ship Waves : An Extension of the Newman-Sharma's Method to Asymmetrical Flow Field
  • シャコウスル フネ ノ ナミ ニ タイスル タテセツダン ハケイ カイセキホウ

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抄録

In this paper, a theoretical evolution of wave pattern analysis is presented in order to determine the lateral force and the resistance caused by wave generation by measuring the asymmetrical ship waves which are created by running ship hull with steady drift angle on a carm water. It is proposed that the amplitude function of elementary waves propagated toward the opposite side of each measured side is determined, when we transform the two sheets of wave profile measured along the longitudinal cuts parallel to the ship's cource on both port and starboard sides, by means of Fourier integral similar to what is called Newman-Sharma's method. The presented method of asymmetrical wave pattern analysis is applied to theoretical wave pattern generated by a submerged point doublet with oblique axis in order to confirm the reasonableness of presented method. The effects of the radiation condition of ship waves on the equation of wave pattern analysis are also theoretically studied in the case that the lateral position of longitudinal cut goes to infinity sideways. Lastly, we towed a floating prolate spheroid, which length is 4 times breadth, with steady drift angle and measured the wave profiles on both ship sides. From the two sheets of wave profile, the lateral force and the resistance caused by wave generation are directly determined.

収録刊行物

  • 西部造船会々報

    西部造船会々報 77 (0), 29-50, 1989

    社団法人 日本船舶海洋工学会

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