A Numerical Study on the Characteristics of a Thick Flapped Rudder depending on Various Geometric Parameters using Computational Fluid Dynamics Technique

• 발행기관: 한국항해항만학회
• 저자명: Tien Thua Nguyen Hyeon Kyu Yoon
• 간행물 정보: 『한국항해항만학회지』제41권 제2호, 33~38쪽, 전체 6쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2017.04.30

영문 초록

A marine flapped rudder is designed to improve the effective lift generated by the rudder; this also improves the maneuverability of the ship. The flap is a high lift device installed at the trailing edge of the rudder to augment lift. In this paper, the characteristics of a thick flapped rudder are analyzed at a low Reynolds number with various ratios of flap chord length to total chord length and various aspect ratios, based on the computational fluid dynamics technique. The performance of the rudder with respect to lift, drag, and center of pressure are investigated, and the efficient ratio of flap chord length to total chord length and improved aspect ratio are determined. Ed: highlight – or ‘superior’. As a case study, the flow on the flapped rudder of an NACA0021 section shape in free stream condition is simulated. The standard k-epsilon turbulence model is used to model the flow around the flapped rudder. The results indicate that the efficient ratio of the flap chord length to total chord length and aspect ratio are 0.3 and 1.4, respectively.

목차

Abstract

1. Introduction

2. Background

3. Numerical Calculation

4. Results and analysis

5. Conclusion

Acknowledgements

References

키워드

Maneuverability Thick Flapped Rudder Low Reynolds Number CFD Analysis,Vvarious Geometric Arameters