PROBLEM TO BE SOLVED: To provide a hull fluid resistance reduction device of high energy-conserving effect that simultaneously reduces both the frictional resistance in a hull surface received during voyage and the wave drag at a bow part.SOLUTION: A hull fluid resistance reduction device consists of a plurality of types of device configurations made up of: the installation of a microbubble generation through-flow pump 50, equipped with a flat plate wing 55, or a flat port nozzle, at a hull side face outside plate part under water level at the bow part; and the installation of a microbubble generation through-flow pump 50b or a flat port nozzle at a hull bottom face part of a hollow pit at the bow part. Properly using them enables both a reduction in friction resistance of the side face and the bottom face of the hull due to microbubbles and a reduction in wave resistance generated at the bow part, so that a fluid resistance generated over the whole hull during voyage is reduced integrally.SELECTED DRAWING: Figure 15
【課題】航行中に受ける船体表面における摩擦抵抗と船首部における造波抵抗の両方を同時に低減する省エネ効果の高い船体流体抵抗低減装置を提供する。【解決手段】船首部水面下の船体側面外板部に、平板翼55を備えたマイクロバブル発生貫流ポンプ50、又は平口ノズルを設置する構成、並びに船首部中空立抗の船体底面部に、マイクロバブル発生貫流ポンプ50b又は平口ノズルを設置する構成の数種の装置構成からなる。これらを使い分けることにより、マイクロバブルによる船体の側面と底面の摩擦抵抗の低減と船首部に発生する造波抵抗の両方が低減されることから、航行時に船体全体に発生する流体抵抗を総合的に低減することを特徴とする。【選択図】図15
HULL FLUID RESISTANCE REDUCTION DEVICE
船体流体抵抗低減装置
2016-04-28
Patent
Electronic Resource
Japanese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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