荷油タンク底の集油孔について

概要

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This paper gives results of a study made of the size and arrangement of water courses in cargo oil tank bottom to reduce the time required for cargo oil stripping of mammoth tankers. A formula representing the relationship between flow and level of water in bays marked off by longitudinal and transverse frames in cargo oil tanks was made, and calculations were made using an electronic computer. The results are as follows. 1) Stripping efficiency is higher in the conventional system (medium-sized holes are made uniformly in longitudinal frames in tanks) than in the concentrated hole system (large-sized holes are made in the longitudinal frames of the aftermost bay only in tanks). 2) The stripping efficiency can be greatly increased by increasing bellmouths in number. 3) The trim of the ship is highly effective in raising stripping effciency, and it is desirable that the largest possible trim is provided to increase the stripping efficiency.
社団法人日本船舶海洋工学会の論文
1967-02-28