Fractal Aspect of Iso-velocity Set in a Turbulent Boundary Layer
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概要
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In this work, we report on the fractal aspect of an iso-velocity set in a turbulent boundary layer. The iso-velocity set is a one-dimensional point set defined by an instantaneous velocity signal. We use both a box-counting algorithm and a method based on the probability distribution function. The analysis is carried out carefully with clarification of the region of scale similarity. The iso-velocity set clearly indicates fractal features, except for near the local mean velocity, and their dimension is less than 0. 4 in space. Scale similarity extends from the Kolmogorov scale to the largest eddy scale. The instantaneous turbulent energy field also shows fractal features and has a close connection with the iso-velocity set.
- 1993-02-15
著者
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TSUJI Yoshiyuki
Department of Energy Engineering and Science, Nagoya University
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HONDA Katsuya
Department of Mathematical Sciences, Shinshu University
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NAKAMURA Ikuo
Department of Mechanical Engineering, Nagoya University
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TSUNODA Hiroyuki
Department of Mechanical Engineering, Nagoya University
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Honda Katsuya
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Tsuji Yoshiyuki
Department Of Energy Engineering And Science Faculty Of Engineering Nagoya University
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Tsunoda Hiroyuki
Department Of Mechanical Engineering Faculty Of Engineering Nagoya University
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Tsunoda Hiroyuki
Department Of Dentistry And Oral Surgery School Of Medicine Keio University
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Tsuji Y
Osaka Univ. Osaka Jpn
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Nakamura Ikuo
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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TSUJI Yoshiyuki
Department of Energy Engineering & Science, Nagoya University
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