6. On the Hydrodynamic Forces for Shallow Draft Ships in Shallow Water

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概要

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• The hydrodynamic forces of heave and pitch modes on a circular disk or a rectangular plate as a shallow draft ship in shallow water are investigated. The boundary value problem is formulated by the use of the concept of the surface distributed sources so that integral equations for the source densities are obtained. Two kinds of numerical schemes are investigated, one which is restricted to an axi-symmetric body such as a circular disk and another as general source technique applied to a rectangular plate. In the case of long waves, the problem is solved analytically. The added mass, wave damping factor, wave exciting forces, radiation pressures, wave exciting pressures and motions are calculated. The corresponding experiments are carried out and the results of the numerical calculation are in good agreement with those of the experiments. The shallow water effect for a shallow draft ship is revealed.

• 社団法人日本船舶海洋工学会の論文

著者

• Maeda Hisaaki

  Institute Of Industrial Science University Of Tokyo

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