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프로펠러 회전류에서 작동하는 방향타의받음각 특성 연구Study on the Angle-of-Attack Characteristics of the Rudder in Rotating Propeller Flow

Other Titles
Study on the Angle-of-Attack Characteristics of the Rudder in Rotating Propeller Flow
Authors
정재환백동근윤현식김기섭백부근
Issue Date
2013
Publisher
대한조선학회
Keywords
Rudder; Angle of attack; Propeller-rudder interaction; 방향타; 받음각; 프로펠러와 타 상호작용
Citation
대한조선학회 논문집, v.50, no.6, pp 421 - 428
Pages
8
Journal Title
대한조선학회 논문집
Volume
50
Number
6
Start Page
421
End Page
428
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/7872
ISSN
1225-1143
Abstract
This study aims at numerically investigating the angle of attack characteristics of the rudder behind a rotating propeller. The rotating propeller of 5 blades and the full spade rudder are placed in the numerical water tunnel with a uniform flow condition to consider propeller-rudder interaction. The turbulence closure model is employed to simulate the three-dimensional unsteady incompressible viscous turbulent flow around the propeller and the rudder. The present numerical method are well verified by comparing with the experimental results. In order to identify the dependence of the angle of attack of the rudder on the rudder angle, a wide range of rudder angles is considered. The present study carried out the quantitative and qualitative analysis of the angle of attack in terms of the pressure distribution, streamlines and the evaluation of the flow incidence, resulting in that the angle of attack increases as we move from the root and the tip to the center of the rudder, regardless of the rudder angle. The distribution of the angle-of-attack along the span is strongly affected by rotating propeller flow and rudder angle. Consequently, the distribution of the angle-of-attack of the oncoming flow against the rudder leading edge plays a role in determination of rudder performance.
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지능형선박연구본부 (함정공학연구센터)
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