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Heat Transfer Research
Facteur d'impact: 0.404 Facteur d'impact sur 5 ans: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v33.i3-4.40
4 pages

Spectral and Correlation Characteristics of Velocity and Temperature Fluctuations in a Free-Convection Boundary Layer

O. A. Kuz'mitskii
State Technical University, St. Petersburg, Russia
S. B. Nikol'skaya
State Technical University, St. Petersburg, Russia
Yu. S. Chumakov
State Technical University, St. Petersburg, Russia

RÉSUMÉ

The paper presents results of an experimental investigation of a free-convection boundary layer on a heated vertical surface. The behavior of various turbulence scales is investigated on the basis of the analysis of spectral and correlation characteristics of velocity and temperature fluctuations. Distinctive features of redistribution of energy and temperature fluctuations in the interface region of the boundary layer are highlighted. A scenario of the onset and development of transient processes in the boundary layer is suggested.


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