鉛直回転体の左右, 横揺れ流体力の実験

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概要

• 論文の詳細を見る

• Floating marine structures, in many cases, employ bodies of revolution as their component members. Prediction of hydrodynamic characteristics of these bodies could be very much simplified owing to their symmetry compared with other objects of general form. This is especially the case with vertical bodies of revolution. Several methods for calculating hydrodynamic forces on vertical bodies of revolution, which utilizes theri axial symmetry, have been proposed, and each of the may be said to posess its own merits. As for results of experiments, while many examples are known of measured vertical forces due to waves and forced heaving osci11ation, very few are available for the modes of sway and roll. In view of this, we carried out forced oscillation tests and wave-excited force tests with emphasis on sway and roll, using a model of an axisymmetric column with spherical footing. We also calculated hydrodynamic forces on a few bodies including the above said model by a source distribution method which employs ring elements and is similar in principle to that developed by Fenton. For examining accuracy of this method, we first compared the values by this method for the half-immersed sphere with those presented by Kim. Then, we compared the results by this method for the above said model with those by another well known method using quadrilateral elements, and with the results of the experiments. Good agreement observed in all of these comparisons may be said to show satisfactory accuracy of this theoretical method and, at the same time, high reliability of the results of the experiments.

• 社団法人日本船舶海洋工学会の論文
• 1982-12-30

著者

• 峰松 宏之

  石川島播磨重工業(株)技術研究所

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• 鉛直回転体の左右, 横揺れ流体力の実験
• 多列円柱に作用する波力の実験的研究
• 直円柱に働く衝撃砕波力の実験的研究
• コンテナ船の水平撓み : 捩り連成振動に関する一考察

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