Active flow control applied to a ship rudder model

IF 1.4 Q3 ENGINEERING, MARINE
Matthias Fromm, Tobias Bestier, Sören Brüns, Jörn Kröger, Florian Kluwe, Alexander Hylla, Farhan Matin, Avraham “Avi” Seifert, Sven Grundmann
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引用次数: 0

Abstract

ABSTRACTThe improvement of the performance and efficiency of hydrodynamic control surfaces such as ship rudders is a long sought goal, given economic considerations and the ecological impact of the shipping sector. One major problem limiting the performance of rudders is flow separation at high deflection angles. In this paper, we address this problem using active flow control, a technique first proposed in aerodynamics. A small scale and a large-scale rudder model with realistic geometry were manufactured and equipped with an active flow control system employing the method of pulsed blowing. The actuation system was extensively characterized. Towing tank experiments were conducted up to a Reynolds number of 1.33×106. Data included force measurements for the large-scale model and flow field and force measurements for the small-scale model. The impact of the active control on the flow fields around the small-scale model was characterized. The delay of the flow separation towards a higher angle of attack, accompanied with an increase of the maximum lift forces, was demonstrated for both models.KEYWORDS: Active flow controlship rudderseparation controlfluidic oscillatortowing tankparticle image velocimetry AcknowledgmentsWe express our thanks to Johannes Will for fruitful discussions on the particulars of rudder design.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis project was supported by the German Federal Ministry of Economic Affairs and Climate Action [grant number 03SX496E].
舰船方向舵模型的主动流动控制
摘要考虑到航运业的经济和生态影响,提高船舶舵等水动力控制面的性能和效率是一个长期追求的目标。限制舵性能的一个主要问题是大偏转角下的气流分离。在本文中,我们使用主动流动控制来解决这个问题,这是一种首次在空气动力学中提出的技术。制作了具有真实几何形状的小比例尺和大比例尺船舵模型,并安装了脉冲吹气方法的主动流量控制系统。对驱动系统进行了广泛的表征。拖箱试验进行到雷诺数1.33×106。数据包括大尺度模型的力测量和小尺度模型的流场和力测量。分析了主动控制对小尺度模型周围流场的影响。两种模型都证明了流动分离向较大迎角方向的延迟,并伴随着最大升力的增加。关键词:主动流动控制舵分离控制流体振荡拖曳槽粒子图像测速感谢约翰内斯·威尔在舵设计细节上的富有成果的讨论。披露声明作者未报告潜在的利益冲突。本项目由德国联邦经济事务和气候行动部支持[资助号03SX496E]。
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
Ship Technology Research
Ship Technology Research ENGINEERING, MARINE-
CiteScore
4.90
自引率
4.50%
发文量
10
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