재현된 반류의 영향을 받는 프로펠러 후류 내 불안정한 날개끝 보오텍스 구조에 대한 정량적 가시화
Visualization of Unstable Vortical Structure in a Propeller Wake Affected by Simulated Hull Wake
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참고문헌
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초록
The characteristics of complicated propeller wake influenced by hull wake are investigated by using a two-frame PIV (Particle Image Velocimetry) technique. As the propeller is significantly affected by the hull wake in a real marine vessel, the measurements of propeller wake under the hull wake would be certainly necessary for more reliable validation and the prediction of numerical simulation with wake modeling. Velocity field measurements have been conducted in a medium-size cavitation tunnel with a hull wake. Generally, the hull wake generated by the boundary layer of ship’s hull produces the different loading distribution on the propeller blade in both upper and lower propeller planes. The difference of the propeller wake behaviors caused by the hull wake is discussed in terms of axial velocity, vorticity and turbulence kinetic energy distribution in the present study.
Abstract
The characteristics of complicated propeller wake influenced by hull wake are investigated by using a two-frame PIV (Particle Image Velocimetry) technique. As the propeller is significantly affected by the hull wake in a real marine vessel, the measurements of propeller wake under the hull wake would be certainly necessary for more reliable validation and the prediction of numerical simulation with wake modeling. Velocity field measurements have been conducted in a medium-size cavitation tunnel with a hull wake. Generally, the hull wake generated by the boundary layer of ship’s hull produces the different loading distribution on the propeller blade in both upper and lower propeller planes. The difference of the propeller wake behaviors caused by the hull wake is discussed in terms of axial velocity, vorticity and turbulence kinetic energy distribution in the present study.
참고문헌 (9)
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- Kline, S.J, "-Coherent Structures in the Turbulent Boundary Layer. Part I: Status Report on a Community-Wide Summary of the Data", Proceedings of Zaric Memorial Conference, pp.200~217 (1989), Hemisphere
- Lee, S.J, "Three Component Velocity Field Measurements of Propeller Wake Using Stereoscopic PIV Technique", Experiments in Fluids, 36(4), pp.575~585 (2004)
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- 백부근, "PIV 를 이용한 선박 프로펠러 후류의 속도장 계측", 대한조선학회 논문집, 40(5), pp.3~25 (2003), 대한조선학회
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- 백부근, "PIV 기법을 이용한 프로펠러 후류의 3차원 유동 특성 연구", 대한조선학회 논문집, 44(3), pp.219~227 (2007), 대한조선학회