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首页> 外文期刊>International Journal of Marine Engineering Innovation and Research >Thrust and Torque Analysis on Propeller C4-40 with The Addition of Kort Nozzle to Pitch Variation
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Thrust and Torque Analysis on Propeller C4-40 with The Addition of Kort Nozzle to Pitch Variation

机译：在螺旋桨C4-40上推力和扭矩分析，并在螺距变化中加入螺旋喷嘴

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at this time there are various types of propellers, one of which is the CPP propeller (Controllable pitch propeller). The CPP propeller can change pitch angles, and at certain pitches it can pull the ship backwards without having to change the rotation. But keep in mind that the CPP has only one pitch design where changing the pitch position means reducing the efficiency of the propeller. So it takes a kort nozzle to increase efficiency. The addition of a kort nozzle is one of the developments of an Energy Saving Device (ESD) which in addition to increasing efficiency it is also able to increase the thrust. Problem formulation of this research is to find out changes in thrust, torque and efficiency on the propeller CPP C4- 40 after the addition of kort nozzle 37. This research begins with determining the dimensions of the propeller, also the types and dimensions of the nozzle. Then the design and drawing of the propeller C4-40 with a kort nozzle 37 was carried out for pitch changes of 0°, 22.5° and 45°. The next step is a meshing process where each pitch the number of meshing ranges from 2.3 to 3.5 million cells. The last step is to simulate the performance of the propeller with the nozzle using software based on Computational Fluid Dynamic. From this research, it can be concluded that the addition of kort nozzle 37 on the propeller C4-40 changes the thrust, torque and efficiency values significantly. Thrust only increased at pitch 0° J 1.4 and pitch 22.5°. The greatest increase in thrust at pitch 22.5° J 0.6 is 88.74%. Torque is reduced except for pitch 0° J 0.8-1.4. The biggest decrease in torque at pitch 45° J 1.2 is 83%. Meanwhile efficiency has decreased at all pitch angles. Where the biggest decrease in pitch 45° J 1 is 99.83%.
机译：此时有各种类型的螺旋桨，其中一个是CPP螺旋桨（可控间距螺旋桨）。 CPP螺旋桨可以改变音调角度，并且在某些间距处，它可以向后拉船，而无需改变旋转。但请记住，CPP只有一个俯仰设计，其中改变俯仰位置意味着降低螺旋桨的效率。所以它需要一个动表喷嘴来提高效率。添加动表喷嘴是节能装置（ESD）的开发之一，除了提高效率之外，它还能够增加推力。该研究的问题制定是在加入动表喷嘴37之后找出推动器CPP C4-40上的推力，扭矩和效率的变化。该研究始于确定螺旋桨的尺寸，以及喷嘴的类型和尺寸。 。然后，具有螺旋桨C4-40的螺旋桨C4-40的设计和图形进行0°，22.5°和45°的俯仰变化。下一步是一种啮合过程，其中每个音调从2.3到350万个细胞的啮合范围。最后一步是使用基于计算流体动态的软件来模拟推进器的性能与喷嘴。从该研究中，可以得出结论，在螺旋桨C4-40上添加螺旋喷嘴37显着改变推力，扭矩和效率值。推力仅在音高0°J 1.4和间距22.5°处增加。间距在22.5°J 0.6的推力最大增加为88.74％。除了音高0°J 0.8-1.4外，扭矩降低。间距45°J 1.2的扭矩下的最大降低为83％。同时效率在所有俯仰角度下降。在45°J 1的最大降低的情况下，99.83％。

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