Abstract No.F180124-112

Author name(s): Inwon Lee, Hyun Park

Company: Pusan National University, Korea

In the previous study of the authors, a novel FDR-SPC was first synthesized. The drag reducing functional radical such as PEGMA (Poly (ethylene) glycol methacrylate) has been utilized to participate in the synthesis process of the SPC. In the high-Reynolds number flow measurement with a flush-mounted balance and a LDV (Laser Doppler Velocimeter), the skin friction of the present FDR-SPC is found to be smaller than that of smooth plate throughout the range of Reynolds number, with the average drag reduction efficiency being 13.5% over the smooth plate. These results strongly support that the present FDR-SPC gives rise to the Toms effect based on chemical reaction at the surface of the coating. The low frictional AF coating based on the FDR-SPC has been comerciallized as Bn Green Guard FS, which is found to give 25% skin friction reduction compared with conventional AF coating.

KEY WORDS: marine AF (Anti-Fouling) paint; low frictional AF paint; turbulent boundary layer; frictional drag reduction; hull coating performance

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