Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Study on the Drag Performance of the Flat Plates Treated by Antifouling Paints

방오 도료가 도장된 평판에 대한 항력 성능 연구

  • 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.)
  • 백부근 (한국해양과학기술원 선박해양플랜트연구소) ;
  • 김경열 (한국해양과학기술원 선박해양플랜트연구소) ;
  • 조성락 (한국해양과학기술원 선박해양플랜트연구소) ;
  • 안종우 (한국해양과학기술원 선박해양플랜트연구소) ;
  • 조상래 (대우조선해양(주)) ;
  • 김경래 (대우조선해양(주)) ;
  • 정용욱 (대우조선해양(주))
  • Received : 2013.05.17
  • Accepted : 2013.10.14
  • Published : 2013.12.20
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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.

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References

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