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http://dx.doi.org/10.3744/SNAK.2013.50.6.399

Study on the Drag Performance of the Flat Plates Treated by Antifouling Paints  

Paik, Bu-Geun (Korea Research Institute of Ships & Ocean Engineering/KIOST)
Kim, Kyung-Youl (Korea Research Institute of Ships & Ocean Engineering/KIOST)
Cho, Seong-Rak (Korea Research Institute of Ships & Ocean Engineering/KIOST)
Ahn, Jong-Woo (Korea Research Institute of Ships & Ocean Engineering/KIOST)
Cho, Sang-Rae (Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
Kim, Kyung-Rae (Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
Chung, Young-Uok (Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
Publication Information
Journal of the Society of Naval Architects of Korea / v.50, no.6, 2013 , pp. 399-406 More about this Journal
Abstract
In the present study, the flat plate model test method is developed to evaluate the skin friction of the marine coating in the cavitation tunnel. Six-component force balance is used to measure the profile drag of the flat plate and strut. LDV(laser Doppler velocimetry) technique is also employed to evaluate the drag and to figure out the reason of the drag reduction. The flow velocities above the surface can be used to assess the skin friction, combined with direct force measurement. Since the vortical structure in the coherent turbulence structure influences on the skin friction in the high Reynolds number regime, the interaction between the turbulence structure and the surface wall is paying more attention. This sort of thing is important in the passive control of the turbulent boundary layer because the skin friction can't be determined only by wall condition. As complicated flow phenomena exist around a paint film, systematic measurement and analysis are necessary to evaluate the skin friction appropriately.
Keywords
Anti-fouling paint; Skin friction; Profile drag; Turbulent boundary layer; LDV(Laser Doppler Velocimetry);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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