航走波を受ける小型船の動揺に関する実験的研究

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書誌事項

タイトル別名
  • An Experimental Study on Oscillations of a Small-Ship Due to Ship-Generated Waves
  • 航走波を受ける小型船の動揺に関する実験的研究〔含 質疑応答〕
  • コウソウハ オ ウケル コガタセン ノ ドウヨウ ニ カンスル ジッケンテキ

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説明

This paper deals with ship oscillations caused by ship-generated waves. The characteristics of the ship oscillations are derived from experiments using a freely floating small-ship model and a sailing ship model in deep water. To explain the derived characteristics, the wave pattern of ship-generated waves and wave moments acting on the small-ship model are examined. The following results were obtained. (1) The maximum roll and the maximum heave of the small-ship occur in the condition a short crest wave of the diverging waves enters parallel to the floating small-ship. (2) The short crest wave makes an angle of about 45〜50°to the sail line (Figures 2 and 3). (3) The maximum pitch occurs in the condition the small-ship is parallel to the sail line. (4) Sailing ship speed has a strong influence on the above oscillations. (5) The wave height approximately decreases with S^<-1/5.88>, where S is the distance from the sail line. (6) The period of the short crest wave is about 0.64 times that of the transverse waves. (7) The maximum roll can be estimated using the wave roll moment measured.

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