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ISSN 打印: 1064-2285
ISSN 在线: 2162-6561

传热学

DOI: 10.1615/HeatTransRes.v33.i1-2.130
10 pages

Correlation Between Instantaneous Hydrodynamic and Thermal Parameters in Turbulent Separated Flow

A. P. Kozlov
Department of Power Engineering of the Kazan' Science Center, Russian Academy of Sciences, Kazan', Russia
Nikolay I. Mikheev
Hydrodynamics and Heat Transfer Laboratory, Research Center for Power Engineering Problems, Kazan Scientific Center of the Russian Academy of Sciences, 2/31 Lobachevsky st., Kazan 420111, Russia
Valery M. Molochnikov
Hydrodynamics and Heat Transfer Laboratory, Research Center for Power Engineering Problems, Kazan Scientific Center of the Russian Academy of Sciences, 2/31 Lobachevsky st., Kazan 420111, Russia
Irek A. Davletshin
Research Center of Power Engineering Problems, Kazan Scientific Centre of the Russian Academy of Sciences, Lobachevsky str., 2/31, Kazan, 420111, Russia

ABSTRACT

Using combined two-point measurements of an instantaneous heat now to a wall, the longitudinal component of skin friction and wall pressure in a turbulent separated flow, some regularities in the transfer in space of the fluctuations of the parameters were discovered. The data on space-time correlation between the measured parameters was obtained. It is shown that large scale eddies of the mixing layer have an essential influence on this correlation. The mechanism of the interaction of eddies with the wall in different parts of the separated flow is described.


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