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http://dx.doi.org/10.3744/SNAK.2012.49.5.410

PIV Analysis of Flow around a Submerged Pitch Damping Foil  

Gim, Ok-Sok (Dept. of Guard and Safety, West Regional Headquaters, Korea Coast Guard)
Lee, Gyoung-Woo (Dept. of Naval Architecture & Ocean Engineering, Mokpo National Maritime University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.49, no.5, 2012 , pp. 410-415 More about this Journal
Abstract
An experimental study is carried out to investigate the near-wake characteristics of a NACA 0018 foil with a flat plate. Two-frame grey-level cross correlation PIV method is used to measure the local flow characteristic around a pitch damping foil to control the vertical motion of high speed crafts in a circulating water channel. The analysis also includes angles of attack 10 and 20 degrees respectively. Reynolds number $Re{\fallingdotseq}3.5{\times}10^4$ based on the chord length(C=100mm) of NACA0018 has been applied during the whole experiments. The distance between the foil and the flat plate is D/C=0.5, 1.0 and 1.5 respectively. The channel effect according as the distance between the foil and the flat plate has a close relation with the velocity distributions around the foil. In the wake of 20-degree of attack, the complex turbulent flow and a thick boundary layer are formed due to the processes of vortex generation and dissipation.
Keywords
Pitch damping foil; Particle image velocimetry(PIV); High speed craft; Channel effect; Vertical motion control;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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