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http://dx.doi.org/10.3744/SNAK.2002.39.3.041

Velocity Field Measurements of Propeller Wake Using a Phase-averaged PTV Technique  

Bu-Geun Paik (포항공과대학교 기계공학과)
Sang-Joon Lee (포항공과대학교 기계공학과)
Publication Information
Journal of the Society of Naval Architects of Korea / v.39, no.3, 2002 , pp. 41-47 More about this Journal
Abstract
Turbulent wake behind a ship propeller has been investigated using the adaptive hybrid 2-frame PTV(Particle Tracking Velocimetry). 400 instantaneous velocity fields were measured according to 4 different blade phases and ensemble-averaged to investigate the spatial evolution of the vortical structure of near wake within one propeller diameter downstream. The phase averaged mean velocity fields show the potential wake and the viscous wake formed by the boundary layers developed on the blade surfaces. As the tip vortex evolves downstream, the slipstream is contracted and the turbulent intensity is decreased with viscous dissipation and turbulent diffusion.
Keywords
PTV(Particle Tracking Velocimetry); propeller wake; phase-averaging;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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