PBCF (Propeller Boss Cap Fins) の研究開発 : プロペラボス後部流れの改善

概要

論文の詳細を見る
It is well known that a screw propeller generates free vortexes called tip vortexes and a hub vortex in its slipstream. In this paper. PBCF (Propeller Boss Cap Fins) which diffuses and weakens a hub vortex by changing the flow near by propeller boss cap is proposed in order to enhance the efficiency of ship's screw propeller. The research and development of PBCF was carried out through Flow Visualization, Propeller Open Test. Self Propulsion Test and On Ship Test to make the PBCF practical. As the result of various experiments, gains of 3 to 7% in propeller efficiency, gains of approx. 2% in self-propulsion efiiciency of 7 m Model ship and gains of approx. 4% in terms of power output on 44,979 Gross Tonnage PCC "Mercury Ace" were obtained. These data lead us to believe that PBCF can be excellent energy-saving device with its simple structure.
社団法人日本船舶海洋工学会の論文