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Investigation of Turbulence Characteristics of Defect Law Region over Flat plate
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 Title & Authors
Investigation of Turbulence Characteristics of Defect Law Region over Flat plate
Suh, Sung-Bu; Park, Il-Ryong; Jung, Kwang-Hyo; Lim, Jung-Gwan; Kim, Kwang-Soo; Kim, Jin;
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 Abstract
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.
 Keywords
Turbulent boundary layer;Particle image velocimetry;Reynolds stress;Taylor micro length scale;Kolmogorov length scale;
 Language
Korean
 Cited by
 References
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