箱型浮体の拘束直進,斜航,旋回時の抵抗について

概要

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With a increasing number of huge offshore works and the construction of huge offshore structures under planning or going on, towing of large caissons (typical dimension ; 50-100m), which are basic components of the structures, has become inevitable. The estimation of hydrodynamic forces on the caissons while they are towed is vital for the estimation of necessary horse-power of towing ships as well as course stability of towed caissons and thus determines the effectiveness of the construction works and the safety of the towing operations. Accordingly the hydrodynamic forces on box-shaped vessels are investigated in this paper. Experiments are conducted in a towing tank and in a rotating-arm tank while changing the water depth, the radius of circulation and the heading angle of models of wide variety of length, breadth and draft. As a theoretical model Kirchhoff's Dead Water Theory is applied with some success. Finally experimental formulae are proposed for the use of the estimation of forces, moments and so-called hydrodynamic derivatives.
独立行政法人海上技術安全研究所の論文
1985-05-30