Investigation of Turbulence Characteristics of Defect Law Region over Flat plate

평판 위 흐름 Defect Law 영역의 난류 특성 연구

  • Suh, Sung-Bu (Naval Architecture Ocean Engineering, Dong-Eui University) ;
  • Park, Il-Ryong (Naval Architecture Ocean Engineering, Dong-Eui University) ;
  • Jung, Kwang-Hyo (Naval Architecture Ocean Engineering, Pusan National University) ;
  • Lim, Jung-Gwan (Naval Architecture Ocean Engineering, Pusan National University) ;
  • Kim, Kwang-Soo (Advanced Ship Research Division, KRISO) ;
  • Kim, Jin (Advanced Ship Research Division, KRISO)
  • 서성부 (동의대학교 조선해양공학과) ;
  • 박일룡 (동의대학교 조선해양공학과) ;
  • 정광효 (부산대학교 조선해양공학과) ;
  • 임정관 (부산대학교 조선해양공학과) ;
  • 김광수 (한국해양과학기술원 부설 선박해양플랜트 연구소 미래선박연구부) ;
  • 김진 (한국해양과학기술원 부설 선박해양플랜트 연구소 미래선박연구부)
  • Received : 2014.03.05
  • Accepted : 2014.08.19
  • Published : 2014.08.30


To investigate the turbulence characteristics within the boundary layer over a flat plate, an experimental study was performed using a PIV technique in a circular water channel. For two water velocities, 0.92 and 1.99 m/s, the water velocity profiles were taken and analyzed to determine turbulent characteristics such as the Reynolds stress, Taylor micro-length scale, and Kolmogorov length scale within the defect law region of the boundary layer. These analysis methods may be applied to research on the friction drag reduction technology using micro-bubbles or an air sheet over the surface of a ship's hull, because the physical reason for the friction drag reduction could be found by understanding the variation of the turbulence characteristics and structures in the boundary layer.


Supported by : 한국학술진흥재단


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