Scale Effect of a Kappel Tip-Rake Propeller

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-09-01 DOI:10.1007/s11804-023-00359-1

Chen-Wei Chen, Xupeng Chen, Zhaoye Zhou, Liwan Chen

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Abstract

Abstract In this paper, the scale effect of Kappel tip-rake propellers with different end plate designs was studied using computational fluid dynamics. Given the base size of the mesh and the appropriate numerical model for the determined simulation, the open-water performance of three Kappel propellers with different bending degrees of the end plate at different scales was calculated. Comparing the scale effect of these propellers, the scale effect of the torque coefficient of a Kappel propeller is more intense than that of the conventional propeller. In addition, the scale effect of the torque coefficient is strong when the bending degree of the end plate increases, dwarfing the scale effect on the thrust coefficient. Following the research on the scale effect of the wake field for the Kappel propeller, the laws that reveal the influence of the scale on the wake field were summarized; that is, the high-speed zone in the wake relatively expands with the increase of the scale in company with a trend of tip cross flow. The research reveals the basic variation trend and rule of the open-water performance and wake distribution for the Kappel propeller under different scales within the Reynolds number range of 4.665×10 5 −8.666×10 7 considering γ transition, as well as the characteristic differences between the Kappel propellers with different end plate designs, which will be of great significance to its optimization design and application to marine vehicles of different scales.

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Kappel前倾螺旋桨的尺度效应

摘要采用计算流体力学方法，研究了不同端板设计的Kappel前倾螺旋桨的尺度效应。给定网格的基本尺寸和所确定的模拟的合适的数值模型，计算了三种不同端板弯曲度的Kappel螺旋桨在不同尺度下的开放水域性能。对比这些螺旋桨的尺度效应，卡佩尔螺旋桨的扭矩系数的尺度效应比常规螺旋桨更强烈。此外，端板弯曲程度越大，扭矩系数的尺度效应越强，而推力系数的尺度效应较小。通过对卡佩尔螺旋桨尾流场尺度效应的研究，总结了尺度对尾流场影响的规律;即随着规模的增大，尾迹中的高速区相对扩大，并呈叶尖横流的趋势。研究揭示了在4.665×10 5−8.666×10 7雷诺数范围内考虑γ跃迁的不同尺度下Kappel螺旋桨开放水域性能和尾流分布的基本变化趋势和规律，以及不同端板设计的Kappel螺旋桨的特性差异，对其在不同尺度船舶上的优化设计和应用具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.