To provide a ship which includes a friction resistance reduction device capable of acquiring a high friction resistance reduction effect with small bubble generation power, and to provide a bubble generation device.SOLUTION: In order to reduce friction resistance of a ship, a milli-bubble generation device 10 which generates milli-bubbles whose bubble diameter is equal to or greater than 100 micrometers is provided at a hull outer plate 1 at a bow part bottom, and a micro-bubble generation device 20 which generates micro-bubbles whose bubble diameter is below 100 micrometers is provided on the downstream side of the milli-bubble generation device 10. By a milli-bubble layer generated on the upstream side, the micro-bubble layer near the hull outer plate 1 is held, the micro-bubbles are kept inside a boundary layer and they are not allowed to disperse.SELECTED DRAWING: Figure 1
【課題】少ない気泡発生動力で高い摩擦抵抗低減効果を得ることができる摩擦抵抗低減装置を備えた船舶、及びバブル発生装置を提供すること。【解決手段】船舶の摩擦抵抗を低減するために、船首部船底の船体外板1に気泡径が100マイクロメータ以上のミリバブルを発生するミリバブル発生装置10を設け、ミリバブル発生装置10の下流側に気泡径が100マイクロメータ未満のマイクロバブルを発生するマイクロバブル発生装置20を設け、上流側で発生させたミリバブルの層により船体外板1近くのマイクロバブルの層を抱え込みマイクロバブルを境界層内に留め、拡散させない。【選択図】図1
SHIP INCLUDING FRICTION RESISTANCE REDUCTION DEVICE, AND BUBBLE GENERATION DEVICE
摩擦抵抗低減装置を備えた船舶、及びバブル発生装置
2022-10-14
Patent
Electronic Resource
Japanese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
Ship bubble resistance reduction detection device and ship
European Patent Office | 2024
|Ship bubble resistance reduction device and resistance reduction method
European Patent Office | 2023
|Resistance reduction method for ship with bubble type resistance reduction device
European Patent Office | 2024
|Ship provided with bubble resistance reduction device, and method for reducing resistance of ship
European Patent Office | 2015
|