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首页> 外文期刊>日本マリンエンジニアリング学会誌 >Energy Saving Technology of PBCF (Propeller Boss Cap Fins) and its Evolution
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Energy Saving Technology of PBCF (Propeller Boss Cap Fins) and its Evolution

机译：PBCF（螺旋桨帽鳍）的节能技术及其发展

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摘要

Currently, there are more than 1,800 vessels that are equipped with PBCF (Propeller Boss Cap Fins), a trustworthy energy saving device which contributes not only to fuel oil consumption savings, but also to the reduction of greenhouse gas emissions. The PBCF mainly recovers the energy loss at the propeller hub vortex downstream of the propeller, and lowers fuel consumption by 5% at constant speed operation, or boost speed by 2% with the same fuel consumption. In the earlier section of this paper, the basic hydrodynamic mechanism of the PBCF as an energy saving device is described. Then, outline of the recent R&D efforts carried out in the past few years to improve the PBCF's fuel saving effect are described. Although it is still ongoing, the geometric shape of the existing PBCF is being improved by taking into account knowledge of the hydrodynamic mechanism obtained through Computational Fluid Dynamics (CFD) analysis. The effectiveness of improvements made was confirmed by the model tests. Finally, in the later section, the possible direction of PBCF improvements necessary for it to be a more effective energy saving device is explained.
机译：目前，有1,800多艘船舶配备了PBCF（螺旋桨船首鳍），这是一种值得信赖的节能装置，不仅有助于节省燃油消耗，而且还有助于减少温室气体排放。 PBCF主要是在螺旋桨下游的螺旋桨毂涡流处回收能量损失，并在恒速运行时将燃油消耗降低5％，或在相同燃油消耗的情况下将速度提高2％。在本文的前面部分中，描述了PBCF作为节能装置的基本流体动力机理。然后，概述了过去几年中为提高PBCF的节油效果而进行的最新研发工作。尽管它仍在进行中，但考虑到通过计算流体动力学（CFD）分析获得的流体力学机理，现有的PBCF的几何形状正在得到改善。模型测试证实了所做改进的有效性。最后，在后面的部分中，说明了使其成为更有效的节能设备所必需的PBCF改进的可能方向。

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