Statistical Characteristics of Turbulence in a Periodically Diverging-Converging Channel Flow
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概要
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The statistical properties of a periodically diverging-converging turbulent channel flow are examined experimentally. Air flow is alternately decelerated through a linearly diverging section, and accelerated through a converging section. Measurements on the energy spectrum, auto-correlation, probability density, skewness/flatness factors and space-time correlation are made in two channels with different diverging-converging angle. The inertial subrange can be recognized for the diverging and converging sections. Large differences are observed in the skewness and flatness factors compared with the equilibrium turbulent flows with no pressure gradient. The eddy scales in the converging section are considerably smaller than those in the diverging section.
- 一般社団法人日本機械学会の論文
- 1994-11-15
著者
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Sano M
Department Of Mechanical Engineering Chiba Institute Of Technology
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Sano Masatoshi
Department Of Electrical Engineering Faculty Of Engineering Science University Of Tokyo
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SHIRAKASHI Masataka
Nagaoka University of Technology
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Shirakashi M
Nagaoka University Of Technology
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Shirakashi Masataka
Department Of Mechanical Engineering Nagaoka University Of Technology
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Shirakashi Masataka
Nagaoka Univ. Technol. Nagaoka Jpn
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