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Investigation of the effectiveness of a stern foil on a patrol boat by experiment and simulation

机译：试验仿真对巡逻艇船尾箔的有效性调查

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In the marine industry, specifically fast patrol boats, the important objectives are reducing resistance and improving the efficiency of ships’ propulsion systems. The aim of this research was to investigate the application of a stern foil on a patrol boat through experimental and simulation methods. The stern foil used to generate a lift force was an asymmetrical National Advisory Committee for Aeronautics (NACA) foil. In the experiment, the stern foil was installed below the transom of a ship model and positioned parallel to the keel direction (3° towards x-axis). This position created a resultant force, which had an angle to the x-axis. There were variables in this experiment, such as the stern foil application, Froude number (Fr) and hull loads. Those combinations of variables generated sufficient data to analyse the effect of the stern foil working in various conditions. At an optimal load condition (half full load, 2 kg) and Fr 1.1 in the experiment and simulation, the ship model had a resistance reduction of as much as 22.3% and 23.3% in stern foil applications. In addition, with different setups of the stern foil (0° towards the x-axis) in the simulation, a resistance reduction of about 26.7% occurred at Fr 0.9.
机译：在海洋工业中，特别是快速巡逻艇，重要的目的是降低抗性和提高船舶推进系统的效率。本研究的目的是通过实验和仿真方法调查船尾箔在巡逻艇上的应用。用于产生提升力的船尾箔是航空航天（NACA）箔的不对称国家咨询委员会。在实验中，船尾箔被安装在船模型的横向下方，并平行于龙骨方向（朝向X轴3°）。该位置创造了由X轴的角度产生的力。该实验中存在变量，例如船尾箔应用，FRoude号码（FR）和船体负载。那些变量的组合产生了足够的数据来分析船尾箔在各种条件下工作的效果。在实验和仿真中的最佳负载条件（半满负载，2千克）和FR 1.1中，船舶模型的阻力降低了船尾箔应用中的22.3％和23.3％。另外，在模拟中，在船尾箔（0°朝向X轴）的不同设置中，在FR 0.9的情况下发生约26.7％的电阻降低。

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