Some Progress in the Research of the Dynamical Structure in Wall Turbulence

JSME International Journal Series B Fluids and Thermal Engineering

Online ISSN : 1347-5371
Print ISSN : 1340-8054
ISSN-L : 1340-8054

Some Progress in the Research of the Dynamical Structure in Wall Turbulence

Ikuo Nakamura, Yoshiyuki Tsuji

著者情報

キーワード: Turbulence, Wall Turbulence, Coherent Structure, K.L.-Expansion, Fractal

ジャーナルフリー

1995 年 38 巻 3 号 p. 335-345

DOI https://doi.org/10.1299/jsmeb.38.335

詳細

抄録

Four topics concerning the coherent structures of the turbulent boundary are discussed in this brief review. Firstly comments are given on the identification of C. S. (coherent structure), secondly some dynamical models of C. S. are surveyed, thirdly our recent study of the fractal nature of C. S. is summarized and an intimate relationship between the burst and the fractality is clarified, and finally some preliminary discussions are presented concerning the application of Kullback-divergence to turbulent flow.

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© The Japan Society of Mechanical Engineers

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