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http://dx.doi.org/10.5394/KINPR.2010.34.6.429

On the Variation of the Boundary Layer as Hull Surface Roughness  

Gim, Ok-Sok (Mokpo National Maritime University)
Oh, Woo-Jun (Graduate School of Mokpo National Maritime University)
Shon, Chang-Bae (Division of Ocean Engineering, Korea Maritime University)
Lee, Gyoung-Woo (Division of Ocean System Engineering, Mokpo National Maritime University)
Publication Information
Journal of Navigation and Port Research / v.34, no.6, 2010 , pp. 429-434 More about this Journal
Abstract
The experimental study of the hull surface roughness on a developing turbulent boundary layer which exposed to a variety of operating environments were investigated by performing particle image velocimetry(PIV) in a circulating water channel. The Reynolds number based on the width of roughness was about Re=1000. the roughness elements used were periodically arranged two-dimensionally. the flow visualization, time-mean velocity fields and vorticity fields to measure the flow characteristics were obtained. The investigation shows that the vortex generation and its progress inside the walls. And the center of the vortex was located at the middle of the height of the surface roughness.
Keywords
Surface roughness; PIV analysis; Flow visualization; Velocity field; Vorticity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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