为提高螺旋桨性能而开发预导管形状的 CFD 分析

Q2 Mathematics CFD Letters Pub Date : 2023-11-30 DOI:10.37934/cfdl.16.2.118132
Munazid Ali, Ariana I Made, Utama I Ketut Aria Pria
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引用次数: 0

摘要

节能装置(ESD)预导管在节能方面的贡献是减少船尾的能量损失和分离,提高螺旋桨的理想效率,增加通过螺旋桨盘的粘性尾流的捕获量,以及增加螺旋桨与船体的相互作用。螺旋桨前的 ESD 预导管对节能的影响受预导管的几何形状、位置和形状的准确性和适宜性的影响。本研究开发了非对称非圆形预导管的形状,并通过比较预导管形状对螺旋桨性能的影响、预导管形状(圆形(传统)、非圆形和非对称非圆形)进行了分析。使用 ANSYS CFX 软件包进行的计算流体动力学(CFD)建模结果与螺旋桨开放水域(POW)测试模拟结果表明,在螺旋桨低转速时,安装几种形状的预导管总体上对提高螺旋桨性能有显著效果,而在螺旋桨高转速时,即使螺旋桨性能有所提高,但效果并不明显。
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CFD Analysis on the Development of Pre-Duct Shape to Improve Propeller Performance
Energy saving contributions of Energy Saving Device (ESD) Pre-Duct are reducing energy losses and separation at the stern, increasing the ideal propeller efficiency, increasing the capture of viscous wake that passes through the propeller disk, and increasing the interaction of the propeller and ship hull. The effect of ESD Pre-Duct in front of the propeller on saving of energy is influenced by the accuracy and suitability of the geometry, position, and shape of pre-duct. In this study, the shape of the asymmetric un-circular pre-duct was develop and analysis conducted by compared the effect of the shape of pre-duct on the performance of propeller, the shape of pre-duct: circular (conventional), un-circular, and asymmetric un-circular. Computational Fluid Dynamics (CFD) modelling results using the ANSYS CFX software package with Propeller Open Water (POW) test simulations show that the installation of pre-ducts with several shape developments in general has a significant effect on increasing propeller performance at low propeller rotation speeds, whereas on high propeller rotation even though there is an increase in propeller performance but not significant.
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来源期刊
CFD Letters
CFD Letters Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
3.40
自引率
0.00%
发文量
76
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