造波抵抗の成分に就いて
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Applying Prof. Havelock's method of analysis the author studies the relative importance of the transverse-and diverging-wave systems which are produced by a ship of Michell's type. Special reference is given to the effects of the depth or the width of a water upon the wave resistance, and the numerical calculations are made for the three cases : (a) deep water (h=∞, b=∞), (b) shallow water (h=finite, b=∞), (c) restricted water (h=finite, b=finite), where h denotes the depth of water, b the width. The main results obtained are as follows : 1°. In (a), the contribution from the diverging wave system to the total wave resistance is found as given by a steppedly increasing function of Froude number, with each step taking place at the hollows on the curve of the transverse wave resistance. 2°. In (b), the resistance component due to the transverse waves attains its maximum at the speed just lower than the critical speed or the solitary wave velocity V=√<gh>, while the diverging wave resistance has its peak just at the critical speed. 3°. In the case (c), the side-walls are found as affecting inverse effects upon the two contributions of the wave resistance : the transverse wave resistance being augmented, while the diverging wave resistance being reduced, in comparison with the case (b).
- 社団法人日本船舶海洋工学会の論文
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関連論文
- 造波抵抗の成分に就いて
- Wave-Making Resistance in Shallow Sea and in Restricted Water, with Special Reference to its Discontinuities